Restraints: Air Bag Module
Restraints: Air Bag Module
The supplemental restraint system (SRS) is designed to            6.   Trouble code registration: Upon error occurrence in
supplement the seat belt to help reduce the risk or sever-             system, SRSCM will store DTC corresponding to the
ity of injury to the driver and passenger by activating and            error. DTC can be cleared only by Hi-Scan. How-
deploying the driver, passenger, side airbag and belt pre-             ever, if an internal fault code is logged or if a crash is
tensioner in certain frontal or side collisions.                       recorded the fault clearing should not happen.
The SRS (Airbag) consists of : a driver side airbag module
located in the center of the steering wheel, which contains       7.   Self diagnostic connector: Data stored in SRSCM
the folded cushion and an inflator unit ; a passenger side             memory will be output to Hi-Scan or other external
airbag module located in the passenger side crash pad                  output devices through connector located below
contains the folded cushion assembled with inflator unit ;             driver side crash pad.
side airbag modules located in the front seat contain the
folded cushion and an inflator unit ; curtain airbag mod-         8.   Once airbag is deployed, SRSCM should not be used
ules located inside of the headliner which contains folded             again but replaced.
cushions and inflator units. The impact sensing function
                                                                  9.   SRSCM will determine whether passenger put on
of the SRSCM is carried out by electronic accelerometer
                                                                       seat belt by the signal from built-in switch in seat belt
that continuously measure the vehicle’s acceleration and
                                                                       buckle, and deploy front seat airbag at each set crash
delivers a corresponding signal through amplifying and fil-
                                                                       speed.
tering circuitry to the microprocessor.
SRSCM (SRS CONTROL MODULE)                                        10. Side airbag deployment will be determined by
                                                                      SRSCM that will detect satellite sensor impact signal
SRSCM will detect front impact with front impact sensor,              upon side crash, irrespective to seat belt condition.
and side impact with side impact sensor, and determine
airbag module deployment.
SPECIFICATION E89D783B
                             Item                                   Resistance (Ω )
Driver Airbag (DAB)                                                     1.4 ~ 6.2
Passenger Airbag (PAB)                                                  1.4 ~ 6.2
Side Airbag (SAB)                                                       1.4 ~ 6.2
Curtain Airbag (CAB)                                                    1.4 ~ 6.2
Seat Belt Retractor Pretensioner (BPT)                                  1.4 ~ 6.2
ARIE500A
ERKD001F
ARIE500C
                                                          ARIE500D
GENERAL                                                                                                RT -5
ERKD001G
ARIE500F
*For more information of the Wiring Repair Kit, please refer to BE group - "REFERENCE SERVICE TOOLS"
RT -6                                                                                                   RESTRAINTS
         NOTE
    The contents in the memory are not erased even if the
    ignition switch is turned OFF or the battery cables are
    disconnected from the battery.
ERKD002Z
SRS wiring can be identified by special yellow outer cov-       • Make sure all SRS ground locations are clean, and
ering (except the SRS circuits under the front seats).            grounds are securely fastened for optimum metal-to-
Observe the instructions described in this section.               metal contact. Poor grounding can cause intermittent
  • Never attempt to modify, splice, or repair SRS wiring.        problems that are difficult to diagnose.
     If there is an open or damage in SRS wiring, replace
     the harness.
                                                               PRECAUTIONS FOR ELECTRICAL INSPECTIONS
ERKD002Y
ERKD002W
Using improper tools could cause an error in inspec- WARNING LAMP ACTIVATION E2B5F9DA
                                                                                                                ON
                              B                                                                                 OFF
                                                                                    6 sec           sec
                                                                Ignition ON
BRIF500A
               A
                                                                                    6 sec
                                                                                                                ON
                                                                                                                OFF
Ignition ON
ERKD511D BRIF500B
                                                       ERRF501U
                                                                  When the seat belt pretensioner(s) deployed after a colli-
                                                                  sion, replace the following items.
PASSENGER RESTRAINTS ACTIVATION WITH PAD                          -    Seat belt pretensioner(s)
SWITCH                                                            -    SRSCM (if B1658 detected)
                                                                  -    Front impact sensors
The PAD switch affects the activation of the front passen-        -    SRS wiring harnesses
ger airbag only and the switch is controlled manually. The
PAD switch will be functioned as follows:                         When the side/curtain airbag(s) deployed after a collision,
                                                                  replace the following items.
   PAD Switch                                                     -    SRSCM
                        PAD Lamp                 PAB
     status                                                       -    Deployed airbag(s)
 Phase-up               ON → OFF               Enabled            -    Side impact sensor(s) for the deployed side(s)
                                                                  -    SRS wiring harnesses
 OFF                        ON                 Disabled
 ON                         OFF                Enabled            After the vehicle is completely repaired, confirm the SRS
                                                                  airbag system is OK.
 Fault                      OFF                Enabled            -    Turn the ignition switch ON, the SRS indicator should
                                                                       come on for about 6 seconds and then go off.
RT -10                                                                                  RESTRAINTS
COMPONENTS E703CF82
[LHD]
                                            3
                                                        11
                                                                   7
                                                         12                             8
                     5
                                            SAIRB
                                             R AG
                                                S
4 13
10
9 6
[RHD]
                                                                                           3
                                        12
                                   7
               8                       11
                                                                                5
                                                       S   IA
                                                   R
                                                           R
                                                       B
                                                   S
                                                       A
                                                   G
13 4
10
6 9
COMPONENTS LOCATION
SCMRT6501L
                                                                                          LRLG101C
GENERAL                                                                            RT -13
                                                  SAIRB
                                                    R AG
                                                      S
SCMRT6502L
Center Pillar
                                                                                   SCMRT6503L
RT -14                                                 RESTRAINTS
SRSCM
SCMRT6504L
                                                            SCMRT6505L
GENERAL                                                                   RT -15
[FRONT]
[REAR]
Rear Pillar
                                                                          SCMRT6506L
RT -16                                                                                               RESTRAINTS
SRSCM
                                                                                                               SCMRT6504L
SUPPLEMENTAL RESTRAINTS SYSTEM CONTROL MODULE(SRSCM)                                                               RT -17
1.   Disconnect the battery negative cable and wait for at    1.   Disconnect the battery negative cable and wait for at
     least three minutes before beginning work.                    least three minutes before beginning work.
2. Remove the ignition key from the vehicle. 2. Remove the ignition key from the vehicle.
3.   Disconnect the DAB, PAB, SAB, CAB and BPT con-           3.   Install the SRSCM with the SRSCM mounting bolts.
     nectors.
                                                               Tightening torque (SRSCM Mounting bolt)
4.   Remove the floor console and heater ducts. (Refer to      : 0.7 ~ 0.9 kgf.m (6.8 ~ 9.2 Nm, 5.0 ~ 6.8 lb.ft)
     BD group)
                                                   KRBF101H
RT -18                                                                                               RESTRAINTS
AIR BAG MODULE (DRIVE                                        frontal crash occurs. The SRSCM determines deployment
                                                             of Driver Airbag (DAB).
SIDE)
                                                                     CAUTION
AIR BAG MODULE AND CLOCK                                         Never attempt to measure the circuit resistance
SPRING                                                           of the airbag module (squib) even if you are us-
                                                                 ing the specified tester. If the circuit resistance is
                                                                 measured with a tester, accidental airbag deploy-
DESCRIPTION         E19698E7
                                                                 ment will result in serious personal injury.
Driver Airbag (DAB) is installed in steering wheel and
electrically connected to SRSCM via clockspring. It          COMPONENTS            E0833290
                                                                                                              SCMRT6507L
AIR BAG MODULE (DRIVE SIDE)                                                                                       RT -19
REMOVAL E0450A67
KRBF102D
INSPECTION E043119F
                                                  SCMRT6508D   If any improper parts are found during the following inspec-
                                                               tion, replace the airbag module with a new one.
3.   Disconnect the horn connector(A).
                                                                        CAUTION
                                                                    Never attempt to measure the circuit resistance
                                                                    of the airbag module (squib) even if you are us-
                                                                    ing the specified tester. If the circuit resistance is
                                              B                     measured with a tester, accidental airbag deploy-
                                              A                     ment will result in serious personal injury.
         CAUTION
     The removed airbag module should be stored in a
     clean, dry place with the pad cover face up.
SCMRT6509L
1.     If, as a result of the following checks, even one abnor-   1.   Disconnect the battery negative cable from battery
       mal point is discovered, replace the clock spring with          and wait for at least three minutes before beginning
       a new one.                                                      work.
2.     Check connectors and protective tube for damage,           2.   Remove the ignition key from the vehicle.
       and terminals for deformities.
                                                                  3.   Connect the clock spring harness connector and horn
                                                                       harness connector to the clock spring.
SCMRT6508D
                                                           COMPONENTS          EF548B7A
The passenger Airbag (PAB) is installed inside the crash
pad and protects the front passenger in the event of a
frontal crash. The SRSCM determines if and when to de-
ploy the PAB.
                                                                                                          SCMRT6510L
RT -22                                                                                                 RESTRAINTS
1.   Disconnect the battery negative cable and wait for at    1.   Disconnect the battery negative cable from battery
     least three minutes before beginning work.                    and wait for at least three minutes before beginning
                                                                   work.
2.   Remove the glove box. (Refer to BD group)
                                                              2.   Remove the ignition key from the vehicle.
3.   Disconnect the PAB connector and remove the PAB
     mounting bolts (2EA).                                    3.   Place a Passenger Airbag (PAB) on the crash pad and
                                                                   tighten the Passenger Airbag (PAB) mounting nuts.
                                                               Tightening torque
                                                               : 0.9 ~ 1.4 kgf.m (8.8 ~ 13.7 N.m, 6.5 ~ 10.1 lb.ft)
                                                               Tightening torque
                                                               : 1.9 ~ 2.7 kgf.m (18.6 ~ 26.5 N.m, 13.7 ~ 19.5 lb.ft)
         CAUTION
     The removed airbag module should be stored in a
     clean and dry place with the pad cover face up.
AIR BAG MODULE (SIDE AIR BAG)                                                                               RT -23
                                                             COMPONENTS          E5587BEA
The Side Airbags (SAB) are installed inside the front seat
and protect the driver and front passenger from danger
when side crash occurs. The SRSCM determines deploy-
ment of side airbag by using Side Impact Sensor (SIS) sig-
nal.
                                                                                                              LRLG101C
RT -24                                                                                                 RESTRAINTS
                                                               Tightening torque
                                                               : 0.7 ~ 0.9 kgf.m (7.0 ~ 9.0 Nm, 5.2 ~ 6.6 lb.ft)
SCMRT6007D
SCMRT6008D
                                                                  COMPONENTS              E4B3122F
Curtain airbags are installed inside the headliner (LH and
RH) and protect the driver and passenger from danger
when side crash occurs. The SRSCM determines deploy-
ment of curtain airbag by using side impact sensor (SIS)
signal.
                                                         SAIRB
                                                           R AG
                                                             S
                                                                  Curtaing Airbag (CAB)
                                                                                                                 SCMRT6502L
RT -26                                                                                                 RESTRAINTS
1.   Disconnect the battery negative cable and wait for at    1.   Disconnect the battery negative cable and wait for at
     least 3 minutes before beginning work.                        least three minutes.
2.   Remove the following parts. (Refer to BD group)          2.   Remove the ignition key from the vehicle.
     -  Side trim, Roof trim
                                                              3.   Install a Curtain Airbag (CAB) on the mounting
3.   Disconnect the Curtain Airbag harness connector.              bracket.
                                                               Tightening torque
                                                               : 1.1 ~ 1.5 kgf.m(10.9 ~ 14.7 Nm, 8.0 ~ 10.8 lb.ft)
                                                                       CAUTION
                                                                     • Never twist the airbag module when installing
                                                                       it. If the module is twisted, airbag module may
                                                                       operate abnormally.
4.   After loosening the mounting bolts(10EA) remove the      7.   Reconnect the battery negative cable.
     curtain airbag.
                                                              8.   After installing the Curtain Airbag (CAB), confirm
                                                                   proper system operation:
                                                                     • Turn the ignition switch ON; the SRS indicator
                                                                        light should be turned on for about six seconds
                                                                        and then go off.
                                                 SCMRT6511D
SEAT BELT PRETENSIONER                                                                                         RT -27
SEAT BELT PRETENSIONER                                         steering wheel or the instrument panel when the vehicle
                                                               crashes.
Center Pillar
                                                                                                               SCMRT6503L
RT -28                                                                                                  RESTRAINTS
1.   Disconnect the battery negative cable, and wait for at    1.   Disconnect the battery negative cable and wait for at
     least three minutes before beginning work.                     least three minutes.
2.   Remove the door scuff trim. (Refer to BD group)
                                                               2.   Remove the ignition key from the vehicle.
3.   Remove the center pillar trim. (Refer to BD group)
                                                               3.   Install the Seat Belt Pretensioner (BPT) with a bolt.
4.   Remove the lower anchor bolt.
                                                                Tightening torque
5.   Remove the upper anchor bolt.                              : 4.0 ~ 5.5 kgf.m (39.2 ~ 53.9 Nm, 28.9 ~ 39.8 lb.ft)
6.   Disconnect the Seat Belt Pretensioner connector.
7.   Loosen the Seat Belt Pretensioner mounting bolt and       4.   Install the upper and lower anchor bolts.
     remove the Seat Belt Pretensioner.
                                                                Tightening torque (Seat Belt Anchor Bolt)
                                                                : 4.0 ~ 5.5 kgf.m (39.2 ~ 53.9 Nm, 28.9 ~ 39.8 lb.ft)
SRS CONTROL SYSTEM                                            to a collision at its mounting location. The primary purpose
                                                              of the Front Impact Sensor (FIS) is to provide an indication
                                                              of a collision. The Front Impact Sensor(FIS) sends accel-
FRONT IMPACT SENSOR (FIS)                                     eration data to the SRSCM.
                                                                                                                 SCMRT6505L
RT -30                                                                                                  RESTRAINTS
         CAUTION                                                        CAUTION
       • Removal of the airbag must be performed ac-                  • Do not turn the ignition switch ON and do not
         cording to the precautions/ procedures de-                     contact the battery cable while replacing the
         scribed previously.                                            front impact sensor.
       • Before disconnecting the front impact sensor
         connector, disconnect the front airbag con-           1.   Install the new Front Impact Sensor.
         nector(s).
       • Do not turn the ignition switch ON and do not         2.   Tighten the Front Impact Sensor mounting bolt.
         connect the battery cable while replacing the
         front impact sensor.                                   Tightening torque
                                                                : 0.7 ~ 0.9 kgf.m (6.8 ~ 9.2 Nm, 5.0 ~ 6.8 lb.ft)
1.   Disconnect the battery negative cable, and wait for at
     least three minutes before beginning work.                3.   Connect the Front Impact Sensor connector and in-
                                                                    stall the connector cover.
2.   Remove the Front Impact Sensor connector cover.
                                                               4.   Reconnect the battery negative cable.
SCMRT6012D
SCMRT6520D
SIDE IMPACT SENSOR (SIS)                                           and RH). They are remote sensors that detect acceleration
                                                                   due to collision at their mounting locations. The primary
                                                                   purpose of the Side Impact Sensor (SIS) is to provide an
DESCRIPTION          E49F823B
                                                                   indication of a collision. The Side Impact Sensor (SIS)
                                                                   sends acceleration data to the SRSCM.
The Side Impact Sensor (SIS) system consists of two front
SIS which are installed in the center pillar (LH and RH)
and two rear SIS which are installed in the rear pillar (LH        COMPONENTS            E86DACCB
[FRONT]
                                                                     Center Pillar
                       Front Side Impact Sensor (FSIS)
[REAR]
Rear Pillar
                                                                                                                   SCMRT6521L
RT -32                                                                                                 RESTRAINTS
FRONT SIDE IMPACT SENSOR                                       1.   Disconnect the battery negative cable and wait for at
                                                                    least three minutes before beginning work.
         CAUTION
                                                               2.   Remove the rear seat. (Refer to BD group)
       • Removal of the airbag must be performed
         according to the precautions/procedures               3.   Disconnect the side impact sensor connector.
         described previously.
       • Before disconnecting the side impact sensor           4.   Loosen the side impact sensor mounting bolt and re-
         connector(s), disconnect the side airbag con-              move the side impact sensor.
         nector(s).
       • Do not turn the ignition switch ON and do not
         connect the battery cable while replacing the
         side impact sensor.
SCMRT6013D
                                                  SCMRT6522D
SRS CONTROL SYSTEM                                             RT -33
INSTALLATION E88CF110
         CAUTION
       • Do not turn the ignition switch ON and do not
         connect the battery cable while replacing the
         side impact sensor.
1.   Install the new Side Impact Sensor with the bolt then
     connect the SRS harness connector to the Side Im-
     pact Sensor.
 Tightening torque
 : 0.7 ~ 0.9 kgf.m (6.8 ~ 9.2 Nm, 5.0 ~ 6.8 lb.ft)
         CAUTION
       • Do not turn the ignition switch ON and do not
         connect the battery cable while replacing the
         side impact sensor.
1.   Install the new Side Impact Sensor with the bolt then
     connect the SRS harness connector to the Side Im-
     pact Sensor.
 Tightening torque
 : 0.7 ~ 0.9 kgf.m (6.8 ~ 9.2 Nm, 5.0 ~ 6.8 lb.ft)
TROUBLESHOOTING
DESCRIPTION            E24ED7B0
HI-SCAN CHECK
SCMRT6899D
4. Read DTCs.
5.   Find and repair the trouble, and clear the DTCs using
     Hi-Scan Pro.
                                                                                         No trouble
                                                                                         code
                                                 Check diagnostic trouble code
                                                                    Diagnostic trouble
                                                                    code displayed
                                                                                                                ERA9035A
RT -36                                                                                                   RESTRAINTS
TERMINAL & CONNECTOR INSPECTION                                2.   When checking the short circuit shorting bar must be
                                                                    opened. Use a plastic clip to put into as a shorting bar
Be sure to perform "TERMINAL & CON-                     opener for disconnecting shorting bar.
NECTOR INSPECTION" before doing "INSPECTION
PROCEDURE" for troubleshooting of each DTC.                    3.   Use SST Dummy adapter (0957A-2G000) to measure
                                                                    resistance or voltage for checking of short or open
1.   Visually inspect all connectors related to the affected        circuit.
     circuit for damage and secure connection.                      Plug it into DAB (BPT) connector to avoid enlarging or
                                                                    damaging the connector pins.
2.   Inspect terminals for damage and corrosion.
                                                               CLEAR THE DTC AND CHECK THE VEHICLE
                                                               AGAIN
         CAUTION
     Avoid damaging connectors during the inspec-              1.   Install the DAB module and connect the DAB connec-
     tion process.                                                  tor.
3.   Are any problems found?                                   2.   Connect the connector of the PAB, SAB, CAB, BPT,
                                                                    FIS and SIS.
       NO
                                                               3.   Connect the SRSCM connector.
     ▶ Go to next step (INSPECTION PROCEDURE).
                                                               4.   Connect the battery negative cable to the battery.
      YES                                                      5.   Connect a Hi-Scan(Pro) to the data link connector.
     ▶ After repairing the trouble part, check whether DTC     6.   Turn the ignition switch to ON.
     occurs or not.
                                                               7.   Clear the DTC stored in the SRSCM memory with the
PREPARATION OF INSPECTION                                           Hi-Scan(Pro)
Refer to the following steps while doing "INSPECTION           8.   Turn the ignition switch to LOCK and wait for at least
PROCEDURE" which is described in the DTC trou-                      30 seconds.
bleshooting section.
                                                               9.   Turn the ignition switch to ON and wait for at least 30
1.   Turn the ignition switch to LOCK.                              seconds.
2.   Disconnect the battery negative cable from the battery    10. Check the vehicle again with the Hi-Scan(Pro).
     and wait for at least 3 minutes.                              Does the above DTC(s) go off?
3.   Remove the DAB module and disconnect the DAB                    YES
     connector.
4.   Disconnect the connectors of the PAB, SAB, CAB,                ▶ Problem is intermittent or was repaired and
     BPT, FIS and SIS.                                              SRSCM memory was not cleared.
CHECKING OF SHORT OR OPEN CIRCUIT                                   ▶ Replace the SRSCM with a new one and then
                                                                    check the vehicle again. At this time, if the vehicle
Refer to the following tips for checking of short or open           normally operates with a new one, the fault may be
circuit.                                                            the SRSCM. Replace the SRSCM.
1.   Shorting bar is located on the upper side of pin 1 and
     2 of SRSCM connector A.
RT -37
                                                                                                                                                                                                                                                 SCMRT6100L
                                                HOT IN ON OR START
                                                                                                   I/P
                                                                       See Power Distribution      JUNCTION
                                                                       (SD110-7)                   BOX
                                            A/BAG             A/BAG
                                            #1                IND
                                            15A               10A
                                                        1 I/P-M
                                                   0.5L/O                                                            0.5O
                                                        4 M15-C                                                         4 M47
                                                                                           INSTRUMENT                                         PAB                                                                              STEERING
                                                                                           CLUSTER                                                                         BCM
                                                                              PAB                                                             CUT OFF                                                                  DRIVER WHEEL
                                                                SRS           OFF                                                             SWITCH                                                                   AIR BAG
                                                                                                                     ON         OFF
                                                                AIR              OFF
                                                                BAG
                                                                                                                                                                    10 M13-B
                                                                                                                       1           2 M47
                                                        5                3 M15-C
                                                    0.5Gr             0.5Y                                        0.5B/O     0.5B/O                             0.5Br/B                                                         MULTIFUNCTION
                                                                                                                                                                                                                         CLOCK SWITCH
                                                        9 I/P-N        14                                            15 I/P-H 11 I/P-K                               7 I/P-N                                             SPRING
                                                                                                                                                                            I/P
                                                                                                                                                                            JUNCTION
                                                                                                                                                                            BOX
                                                                                                                                                                                                      1          2 I02
                                       6                5                3                                             4         12                                 10 I/P-L
                                    0.5L            0.5Gr             0.5Y                                        0.5B/O       0.5G                             0.5Br/B                         0.5L/O      0.5R
                                      24                1               23                                            19         21                                 13                               5         6 I01-A
                                    ON/START          Air Bag         PAB IND.                                         (+)             (-)                                                            (+)        (-)                   SRS
                                                                                                                                                                 Crash Output                                                          CONTROL
                                      Input            IND.
                                                                                                                             Cut Off                                                                                                   MODULE
                                                                                                                             Switch
                                            (-)         (+)                              K-Line                             (+)                   (-)                            (+)         (-)                            Ground
                                           12         11                                  22                            17             18                                     16           15                                2 I01-A
                                                                                       0.5W                           0.5L         0.5O/B                                  0.5Br       0.5G/O
                                                                                          11                             7              8                                      1            2 I/P-L
                       E4BAAC09
                                                                                                                                                                                                      I/P
                                                                                                                                                                                                      JUNCTION
                                                                                                                                                                                                      BOX
                                    0.5R/O        0.5Br/O                                                                                                                                                                  0.5B
                                                                                          8
TROUBLESHOOTING
                                                                                                                         1              2 I/P-N                                 11         12 I/P-E
                                                                                       0.5W                           0.5L         0.5O/B
                  CIRCUIT DIAGRAM
                                                                                                   See Data
                                                                                                   Link Details        16                    15         MC221              0.5Br       0.5G/O
                                                                                                   (SD200-1)
                                                                                       0.5W                           0.5L         0.5O/B
                                            2          1 I03                              13 M10                         1              2 C250                                   1          2 E04
                                                                PASSENGER            DATA LINK                                              FRONT                                                FRONT
                                                                AIR BAG             CONNECTOR                                               IMPACT                                               IMPACT
                                                                                                                                            SENSOR RH                                            SENSOR LH                   G25
                                                                                                                                                                                                                      SCMRT6101L
RESTRAINTS
      6       5        4       3        2      1              10       9       8        7       6        5       4    3    2    1
     12       11      10       9       8       7              20      19       18      17       16      15       14   13   12   11
     18       17      16       15      14      13             30      29       28      27       26      25       24   23   22   21
     24       23      22       21      20      19             40      39       38      37       36      35       34   33   32   31
                                                                                                                                SCMRT6102L
RT -40                                                                        RESTRAINTS
The SRSCM sets above DTC(s) if it detects that the battery voltage of restraints system is too high or too low. When the
voltage returns to normal, the SRS warning light automatically goes off and a malfunction is no longer indicated.
                                            IGNITION
                                            SWITCH             24(A)
                BATTERY
                                                                         SRSCM
[HARNESS CONNECTOR]
                6     5        4      3         2       1           10    9     8    7    6         5    4    3     2        1
               12    11        10    9      8          7            20   19     18   17   16       15   14    13    12       11
               18    17        16    15     14         13           30   29     28   27   26       25   24    23    22       21
               24    23        22    21     20         19           40   39     38   37   36       35   34    33    32       31
                             CONNECTOR A                                                  CONNECTOR B
                                                                                                                         Shorting Bar
SRSCM
ERBF500N
SPECIFICATION E76738DA
1.   PREPARATION
     Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
2) Measure voltage between the terminal 24(A) of SRSCM harness connector and chassis ground.
             ON
                     Battery
                    24(A)
                                            V
                     SRSCM
                                                                                                              ERBF501Q
NO
YES
          ▶ Replace the SRSCM with a new one, and then check the vehicle again. At this time, if the vehicle normally
          operates with a new SRSCM, the fault may be the SRSCM(Replace SRSCM).
YES
NO
4. CHECK GENERATOR
YES
NO
YES
NO
1) Turn the ignition switch to LOCK and wait for at least 30 seconds.
          CAUTION
     Check again that the battery negative cable is disconnected from the battery.
3) Connect the connectors of the PAB, SAB, CAB, BPT, FIS and SIS.
YES
NO
          ▶ Problem is intermittent or was repaired and SRSCM memory was not cleared.
RT -46                                                                                                                                  RESTRAINTS
The detecting system for front crash consists of the SRSCM and two Front Impact Sensors (FIS). The SRSCM sets above
DTC(s) if it detects short to ground on the FIS circuit.
                                                                                          FIS [Driver]
                                             1 High 16(A)                                 Terminal              Connected to            Function
                   FIS [Driver]              2 Low 15(A)                                        1        SRSCM Terminal 16(A)           FIS High
                                                                                                2        SRSCM Terminal 15(A)           FIS Low
                                                                          SRSCM           FIS [Passenger]
                                             1 High 17(A)                                 Terminal              Connected to            Function
                   FIS [Passenger]           2 Low 18(A)                                        1        SRSCM Terminal 17(A)           FIS High
                                                                                                2        SRSCM Terminal 18(A)           FIS Low
[HARNESS CONNECTOR]
                                                 6       5       4   3     2       1       10       9     8     7      6      5    4    3     2     1
       2    1              2      1              12      11     10   9     8      7        20       19   18     17     16     15   14   13   12     11
                                                 18      17     16   15    14     13       30       29   28     27     26     25   24   23   22     21
                                                 24      23     22   21    20     19       40       39   38     37     36     35   34   33   32     31
                                                                CONNECTOR A                                          CONNECTOR B
                                                                                                                                             Shorting bar
     FIS[Driver]     FIS[Passenger]
                                                                                          SRSCM
SCMRT6110L
1.   PREPARATION
     Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
TROUBLESHOOTING                                                                                    RT -47
1) Measure resistance between the terminal 1 of FIS harness connector and chassis ground.
specification(resistance) : ∞ Ω
             LOCK
              LOCK
                         FIS
                     1         2
                                        Ω
               16(17)A   15(18)A
                     SRSCM
                                                                                                   ERBF500R
YES
NO
▶ Repair or replace the wiring harness between the FIS and the SRSCM.
3) Connect the connectors of the PAB, SAB, CAB, BPT, FIS and SIS.
YES
▶ Go to next step.
NO
The detecting system for front crash consists of the SRSCM and two Front Impact Sensors (FIS). The SRSCM sets above
DTC(s) if it detects short to battery on the FIS circuit.
                                                                                            FIS [Driver]
                                                 1 High 16(A)                               Terminal              Connected to            Function
                   FIS [Driver]                  2 Low 15(A)                                      1        SRSCM Terminal 16(A)           FIS High
                                                                                                  2        SRSCM Terminal 15(A)           FIS Low
                                                                            SRSCM           FIS [Passenger]
                                                 1 High 17(A)                               Terminal              Connected to            Function
                   FIS [Passenger]               2 Low 18(A)                                      1        SRSCM Terminal 17(A)           FIS High
                                                                                                  2        SRSCM Terminal 18(A)           FIS Low
[HARNESS CONNECTOR]
                                                  6       5       4    3     2       1       10       9     8     7      6      5    4    3     2     1
       2    1              2      1               12      11      10   9     8       7       20       19   18     17     16     15   14   13   12     11
                                                  18      17      16   15    14      13      30       29   28     27     26     25   24   23   22     21
                                                  24      23      22   21    20      19      40       39   38     37     36     35   34   33   32     31
                                                                 CONNECTOR A                                           CONNECTOR B
                                                                                                                                               Shorting bar
     FIS[Driver]     FIS[Passenger]
                                                                                            SRSCM
SCMRT6110L
1.   PREPARATION
     Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
3) Measure voltage between the terminal 1 of FIS harness connector and chassis ground.
specification(voltage) : Approximately 0 V
             ON
              LOCK
                          FIS
                     1          2
                                            V
               16(17)A    15(18)A
                         SRSCM
                                                                                                         ERBF500S
YES
NO
▶ Repair the short to battery line circuit on wiring harness between the FIS and the SRSCM.
3) Connect the connectors of the PAB, SAB, CAB, BPT, FIS and SIS.
YES
▶ Go to next step.
NO
The detecting system for front crash consists of the SRSCM and two Front Impact Sensors (FIS). The SRSCM sets above
DTC(s) if it detects that any FIS is defective or there is communication error between any FIS and the SRSCM.
                                                                                     FIS [Driver]
                                               1 High 16(A)                          Terminal             Connected to             Function
                 FIS [Driver]                  2 Low 15(A)                                 1        SRSCM Terminal 16(A)           FIS High
                                                                                           2        SRSCM Terminal 15(A)           FIS Low
                                                                     SRSCM           FIS [Passenger]
                                               1 High 17(A)                          Terminal             Connected to             Function
                 FIS [Passenger]               2 Low 18(A)                                 1        SRSCM Terminal 17(A)           FIS High
                                                                                           2        SRSCM Terminal 18(A)           FIS Low
[HARNESS CONNECTOR]
                                                6    5     4    3     2       1       10       9     8     7      6      5    4    3     2     1
     2    1              2      1               12   11    10   9     8      7        20       19   18     17     16     15   14   13   12     11
                                                18   17    16   15    14     13       30       29   28     27     26     25   24   23   22     21
                                                24   23    22   21    20     19       40       39   38     37     36     35   34   33   32     31
                                                          CONNECTOR A                                           CONNECTOR B
                                                                                                                                        Shorting bar
   FIS[Driver]     FIS[Passenger]
                                                                                     SRSCM
SCMRT6110L
1.   PREPARATION
     Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
     1)   Measure resistance between the terminal 1 of FIS harness connector and the terminal 16(17) of SRSCM harness
          connector (A).
     2)   Measure resistance between the terminal 2 of FIS harness connector and the terminal 15(18) of SRSCM harness
          connector (A).
            LOCK
                          FIS
                     1          2
                                          Ω
               16(17)A    15(18)A
SRSCM
ERBF500W
YES
NO
▶ Repair or replace the wiring harness between the FIS and the SRSCM.
3) Connect the connectors of the PAB, SAB, CAB, BPT, FIS and SIS.
YES
▶ Go to next step.
NO
The detecting system for front crash consists of the SRSCM and two Front Impact Sensors (FIS). The SRSCM sets above
DTC(s) if it detects wrong FIS is used.
                                                                                           FIS [Driver]
                                                1 High 16(A)                               Terminal             Connected to             Function
                  FIS [Driver]                  2 Low 15(A)                                      1        SRSCM Terminal 16(A)           FIS High
                                                                                                 2        SRSCM Terminal 15(A)           FIS Low
                                                                           SRSCM           FIS [Passenger]
                                                1 High 17(A)                               Terminal             Connected to             Function
                  FIS [Passenger]               2 Low 18(A)                                      1        SRSCM Terminal 17(A)           FIS High
                                                                                                 2        SRSCM Terminal 18(A)           FIS Low
[HARNESS CONNECTOR]
                                                 6       5       4    3     2       1       10       9     8     7      6      5    4    3     2     1
      2    1              2      1               12      11      10   9     8       7       20       19   18     17     16     15   14   13   12     11
                                                 18      17      16   15    14      13      30       29   28     27     26     25   24   23   22     21
                                                 24      23      22   21    20      19      40       39   38     37     36     35   34   33   32     31
                                                                CONNECTOR A                                           CONNECTOR B
                                                                                                                                              Shorting bar
   FIS[Driver]      FIS[Passenger]
                                                                                           SRSCM
SCMRT6110L
The Driver Airbag circuit consists of the SRSCM, Clockspring and the Driver Airbag (DAB). The SRSCM sets above
DTC(s) if it detects that the resistance of DAB squib is too high or low.
Clockspring
[HARNESS CONNECTOR]
                             6        5         4     3        2     1           10    9       8     7      6     5      4    3        2      1
         2     1            12       11       10     9         8     7           20    19      18    17     16   15      14   13      12      11
                            18       17       16     15        14    13          30    29      28    27     26   25      24   23      22      21
                            24       23       22     21        20    19          40    39      38    37     36   35      34   33      32      31
                                            CONNECTOR A                                                    CONNECTOR B
         DAB                                                                                                                         Shorting Bar
                                                                               SRSCM
SCMRT6120L
SPECIFICATION E28BE0B8
1.   PREPARATION
     Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
          CAUTION
     Never attempt to measure the circuit resistance of the airbag module(squib) even if you are using the speci-
     fied tester.
     1)   Connect the Dummy and the Dummy Adapter on DAB harness connector.
          ●Refer to "SPECIAL SERVICE TOOL" section in this SERVICE MANUAL for the SST No. of Dummy and
          Dummy Adapter.
                   LOCK
                                 Dummy
                                 Dummy
                                 Adapter
1 2
               Ω
                          5(A)      6(A)
                                 SRSCM
                                                                                                        SCMRT6121L
NO
YES
     1)   Measure resistance between the terminal 1 of DAB harness connector and the terminal 5 of SRSCM harness
          connector(A).
     2)   Measure resistance between the terminal 2 of DAB harness connector and the terminal 6 of SRSCM harness
          connector(A).
             LOCK
                            DAB
1 2
                                                Ω
                    5(A)          6(A)
                           SRSCM
                                                                                                          SCMRT6122L
YES
NO
          ▶ Repair or replace the wiring harness between the DAB and the clockspring or between the clockspring and
          the SRSCM.
Specification (resistance) : ∞ Ω
                    LOCK
                                    DAB
                              1             2
                 Ω
                           5(A)          6(A)
                                  SRSCM
                                                                                                          SCMRT6123L
YES
▶ Go to next step.
NO
          ▶ Repair or replace the wiring harness between the DAB and the clockspring or between the clockspring and
          the SRSCM.
The Driver Airbag circuit consists of the SRSCM, Clockspring and the Driver Airbag (DAB). The SRSCM sets above
DTC(s) if it detects short to ground on the DAB circuit.
Clockspring
[HARNESS CONNECTOR]
                             6        5          4    3         2    1               10    9       8     7      6     5      4    3        2      1
        2     1              12       11      10      9      8       7               20    19      18    17     16   15      14   13      12      11
                             18       17      16      15     14      13              30    29      28    27     26   25      24   23      22      21
                             24       23      22      21     20      19              40    39      38    37     36   35      34   33      32      31
                                            CONNECTOR A                                                        CONNECTOR B
        DAB                                                                                                                              Shorting Bar
                                                                               SRSCM
SCMRT6120L
1.   PREPARATION
     Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
1) Measure resistance between the terminal 2 of DAB harness connector and chassis ground.
             LOCK
                            DAB
                       1        2
                                           Ω
5(A) 6(A)
SRSCM
SCMRT6124L
YES
NO
          ▶ Repair or replace the wiring harness between the DAB and the clockspring or between the clockspring and
          the SRSCM.
3) Connect the connectors of the PAB, SAB, CAB, BPT, FIS and SIS.
YES
NO
YES
▶ Go to next step.
NO
The Driver Airbag circuit consists of the SRSCM, Clockspring and the Driver Airbag (DAB). The SRSCM sets above
DTC(s) if it detects short to battery line on the DAB circuit.
Clockspring
[HARNESS CONNECTOR]
                            6        5         4     3        2     1               10    9       8     7      6     5      4    3        2      1
         2     1            12      11       10      9        8     7               20    19      18    17     16   15      14   13      12      11
                            18      17       16      15       14    13              30    29      28    27     26   25      24   23      22      21
                            24      23       22      21       20    19              40    39      38    37     36   35      34   33      32      31
                                           CONNECTOR A                                                        CONNECTOR B
         DAB                                                                                                                            Shorting Bar
                                                                              SRSCM
SCMRT6120L
1.   PREPARATION
     Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
3) Measure voltage between the terminal 2 of DAB harness connector and chassis ground.
              ON
                          DAB
                     1       2
                                       V
                   5(A)    6(A)
                         SRSCM
                                                                                                          SCMRT6125L
YES
NO
          ▶ Repair or replace the wiring harness between the DAB and the clockspring or between the clockspring and
          the SRSCM.
3) Connect the connectors of the PAB, SAB, CAB, BPT, FIS and SIS.
YES
NO
YES
▶ Go to next step.
NO
The Passenger Airbag circuit consists of the SRSCM and the Passenger Airbag (PAB). The SRSCM sets above DTC(s)
if it detects that the resistance of PAB squib is too high or low.
[HARNESS CONNECTOR]
                          6        5        4     3        2     1              10    9        8      7      6     5     4     3       2      1
                         12       11       10    9         8    7               20    19       18    17      16   15     14    13     12      11
        2    1
                         18       17       16    15        14   13              30    29       28    27      26   25     24    23     22      21
                         24       23       22    21        20   19              40    39       38    37      36   35     34    33     32      31
ERBF200C
SPECIFICATION E69C3EA8
1.   PREPARATION
     Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
          CAUTION
     Never attempt to measure the circuit resistance of the airbag module(squib) even if you are using the speci-
     fied tester.
     1)   Connect the Dummy and the Dummy Adapter on PAB harness connector.
          ● Refer to "SPECIAL SERVICE TOOL" section in this SERVICE MANUAL for the SST No. of Dummy and
          Dummy Adapter.
                  LOCK
                             Dummy
                             Dummy
                             Adapter
1 2
                     11(A)     12(A)
             Ω
                             SRSCM
                                                                                                          ERBF200D
YES
NO
     1)   Measure resistance between the terminal 1 of PAB harness connector and the terminal 11 of SRSCM harness
          connector(A).
     2)   Measure resistance between the terminal 2 of PAB harness connector and the terminal 12 of SRSCM harness
          connector(A).
                 LOCK
                                  PAB
Ω 1 2
11(A) 12(A)
SRSCM
ERBF200E
YES
NO
▶Repair or replace the wiring harness between the PAB and the SRSCM.
                 LOCK
                                  PAB
1 2
Ω 11(A) 12(A)
                                 SRSCM
                                                                                       ERBF200F
YES
▶ Go to next step.
NO
▶ Repair or replace the wiring harness between the PAB and the SRSCM.
The Passenger Airbag circuit consists of the SRSCM and the Passenger Airbag (PAB). The SRSCM sets above DTC(s)
if it detects short to ground on the PAB circuit.
[HARNESS CONNECTOR]
                           6        5        4     3        2     1              10    9        8      7      6     5     4     3       2     1
                           12      11       10    9         8    7               20    19       18    17      16   15     14    13     12     11
           2    1
                           18      17       16    15        14   13              30    29       28    27      26   25     24    23     22     21
                           24      23       22    21        20   19              40    39       38    37      36   35     34    33     32     31
ERBF200C
1.   PREPARATION
     Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
1) Measure resistance between the terminal 1 of PAB harness connector and chassis ground.
              LOCK
                           PAB
Ω 1 2
11(A) 12(A)
                          SRSCM
                                                                                    ERBF500O
YES
NO
▶ Repair or replace the wiring harness between the PAB and the SRSCM.
3) Connect the connectors of the PAB, SAB, CAB, BPT, FIS and SIS.
YES
▶ Go to next step.
NO
The Passenger Airbag circuit consists of the SRSCM and the Passenger Airbag (PAB). The SRSCM sets above DTC(s)
if it detects short to battery line on the PAB circuit.
[HARNESS CONNECTOR]
                             6        5        4     3        2     1           10    9        8      7      6     5     4     3       2     1
                            12       11       10    9         8    7            20    19       18    17      16   15     14    13     12     11
           2    1
                            18       17       16    15        14   13           30    29       28    27      26   25     24    23     22     21
                            24       23       22    21        20   19           40    39       38    37      36   35     34    33     32     31
ERBF200C
1.   PREPARATION
     Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
     3)    Measure voltage between the terminal 1 of PAB harness connector and chassis ground.
TROUBLESHOOTING                                                                                         RT -69
                ON
                              PAB
                        1           2
            V        11(A)     12(A)
                             SRSCM
                                                                                                         ERBF500P
YES
NO
▶ Repair the short to battery line circuit on wiring harness between the PAB and the SRSCM.
3) Connect the connectors of the PAB, SAB, CAB, BPT, FIS and SIS.
YES
▶ Go to next step.
NO
The Seat Belt Pretensioner circuit consists of the SRSCM and two Seat Belt Pretensioners (BPT). The SRSCM sets above
DTC(s) if it detects that the resistance of BPT squib is too high or low.
                                                                                 BPT [Driver]
                                          1    High 17(B)                        Terminal              Connected to            Function
                BPT [Driver]              2    Low     18(B)                           1        SRSCM Terminal 17(B)           BPT High
                                                                                       2        SRSCM Terminal 18(B)           BPT Low
                                                                     SRSCM       BPT [Passenger]
                                          1    High    10(B)                     Terminal              Connected to            Function
            BPT [Passenger]               2    Low       9(B)
                                                                                       1        SRSCM Terminal 10(B)           BPT High
                                                                                       2        SRSCM Terminal 9(B)            BPT Low
[HARNESS CONNECTOR]
      2 1               2 1               6     5       4       3    2    1      10        9    8      7       6     5    4    3       2      1
                                          12   11       10      9    8    7      20        19   18     17     16     15   14   13     12     11
                                          18   17       16      15   14   13     30        29   28     27     26     25   24   23     22     21
                                          24   23       22      21   20   19     40        39   38     37     36     35   34   33     32     31
                                                    CONNECTOR A                                             CONNECTOR B
                                                                                                                                    Shorting Bar
SCMRT6140L
SPECIFICATION E609C78B
1.   PREPARATION
     Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
          CAUTION
     Never attempt to measure the circuit resistance of the airbag module(squib) even if you are using the speci-
     fied tester.
     1)   Connect the Dummy and the Dummy Adapter on BPT harness connector.
          ● Refer to "SPECIAL SERVICE TOOL" section in this SERVICE MANUAL for the SST No. of Dummy and
          Dummy Adapter.
2) Measure resistance between the terminal 17(10) and 18(9) of SRSCM harness connector(B).
             LOCK
                        Dummy
                        Dummy
                        Adapter
                    1         2
              17(10)B    18(9)B
                        SRSCM
                                                                                                           SCMRT6141L
YES
NO
     1)   Measure resistance between the terminal 1 of BPT harness connector and the terminal 17(10) of SRSCM har-
          ness connector(B).
     2)   Measure resistance between the terminal 2 of BPT harness connector and the terminal 18(9) of SRSCM harness
          connector(B).
RT -72                                                                                RESTRAINTS
           LOCK
                            BPT
                    1            2
                                          Ω
             17(10)B         18(9)B
                        SRSCM
                                                                                          SCMRT6142D
YES
NO
▶ Repair or replace the wiring harness between the BPT and the SRSCM.
             LOCK
                             BPT
1 2
               17(10)B        18(9)B
                                          Ω
                            SRSCM
                                                                                          SCMRT6143D
YES
▶ Go to next step.
NO
▶ Repair or replace the wiring harness between the BPT and the SRSCM.
The Seat Belt Pretensioner consists of the SRSCM and two Seat Belt Pretensioners (BPT). The SRSCM sets above
DTC(s) if it detects short to ground on the BPT circuit.
                                                                                            BPT [Driver]
                                             1     High 17(B)                               Terminal              Connected to            Function
                   BPT [Driver]              2      Low      18(B)                                1        SRSCM Terminal 17(B)           BPT High
                                                                                                  2        SRSCM Terminal 18(B)           BPT Low
                                                                          SRSCM             BPT [Passenger]
                                             1     High      10(B)                          Terminal              Connected to            Function
               BPT [Passenger]               2      Low       9(B)
                                                                                                  1        SRSCM Terminal 10(B)           BPT High
                                                                                                  2        SRSCM Terminal 9(B)            BPT Low
[HARNESS CONNECTOR]
         2 1               2 1               6       5       4       3    2       1         10        9    8      7       6     5    4    3       2      1
                                             12     11       10      9    8       7         20        19   18     17     16     15   14   13     12     11
                                             18     17       16      15   14      13        30        29   28     27     26     25   24   23     22     21
                                             24     23       22      21   20      19        40        39   38     37     36     35   34   33     32     31
                                                         CONNECTOR A                                                   CONNECTOR B
                                                                                                                                               Shorting Bar
SCMRT6140L
1.     PREPARATION
       Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
RT -74                                                                                             RESTRAINTS
1) Measure resistance between the terminal 1 of BPT harness connector and chassis ground.
             LOCK
                          BPT
                    1           2
                                         Ω
               17(10)B    18(9)B
                         SRSCM
                                                                                                       SCMRT6144D
YES
NO
▶ Repair or replace the wiring harness between the BPT and the SRSCM.
3) Connect the connectors of the PAB, SAB, CAB, BPT, FIS and SIS.
YES
NO
The Seat Belt Pretensioner consists of the SRSCM and two Seat Belt Pretensioners (BPT). The SRSCM sets above
DTC(s) if it detects short to battery line on the BPT circuit.
                                                                                       BPT [Driver]
                                          1    High 17(B)                              Terminal              Connected to            Function
                BPT [Driver]              2    Low      18(B)                                1        SRSCM Terminal 17(B)           BPT High
                                                                                             2        SRSCM Terminal 18(B)           BPT Low
                                                                     SRSCM             BPT [Passenger]
                                          1    High     10(B)                          Terminal              Connected to            Function
            BPT [Passenger]               2    Low       9(B)
                                                                                             1        SRSCM Terminal 10(B)           BPT High
                                                                                             2        SRSCM Terminal 9(B)            BPT Low
[HARNESS CONNECTOR]
      2 1               2 1               6     5       4       3    2       1         10        9    8      7       6     5    4    3       2      1
                                          12   11       10      9    8       7         20        19   18     17     16     15   14   13     12     11
                                          18   17       16      15   14      13        30        29   28     27     26     25   24   23     22     21
                                          24   23       22      21   20      19        40        39   38     37     36     35   34   33     32     31
                                                    CONNECTOR A                                                   CONNECTOR B
                                                                                                                                          Shorting Bar
SCMRT6140L
1.   PREPARATION
     Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
3) Measure voltage between the terminal 1 of BPT harness connector and chassis ground.
            ON
                          BPT
1 2
               17(10)B    18(9)B
                                            V
                         SRSCM
                                                                                                       SCMRT6145D
YES
NO
▶Repair the short to battery line circuit on wiring harness between the BPT and the SRSCM.
3) Connect the connectors of the PAB, SAB, CAB, BPT, FIS and SIS.
YES
▶ Go to next step.
NO
The Side Airbag circuit consists of the SRSCM and two Side Airbags (SAB). The SRSCM sets above DTC(s) if it detects
that the resistance of SAB squib is too high or low.
                                                                                           SAB [Driver]
                                           1 High 20(B)                                    Terminal            Connected to            Function
               SAB [Driver]                2 Low 19(B)
                                                                                                1        SRSCM Terminal 20(B)          SAB High
                                                                                                2        SRSCM Terminal 19(B)          SAB Low
                                                                         SRSCM
                                                                                           SAB [Passenger]
                                           1 High 7(B)                                     Terminal      Connected to                  Function
               SAB [Passenger]             2 Low 8(B)
                                                                                                1        SRSCM Terminal 7(B)           SAB High
                                                                                                2        SRSCM Terminal 8(B)           SAB Low
[HARNESS CONNECTOR]
                                           6        5       4       3     2       1        10       9    8      7    6      5    4     3       2      1
                                           12       11      10      9     8      7         20       19   18     17   16     15   14    13     12     11
      2    1           2      1            18       17      16      15    14     13        30       29   28     27   26     25   24    23     22     21
                                           24       23      22      21    20     19        40       39   38     37   36     35   34    33     32     31
                                                          CONNECTOR A                                                CONNECTOR B
 SAB[Driver] SAB[Passenger]                                                                                                           Shorting Bar
SRSCM
ERBF501S
SPECIFICATION EBEB1D00
1.   PREPARATION
     Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
          CAUTION
     Never attempt to measure the circuit resistance of the airbag module(squib) even if you are using the speci-
     fied tester.
     1)   Connect the Dummy and the Dummy Adapter on SAB harness connector.
          ● Refer to "SPECIAL SERVICE TOOL" section in this SERVICE MANUAL for the SST No. of Dummy and
          Dummy Adapter.
2) Measure resistance between the terminal 20(7) and 19(8) of SRSCM harness connector(B).
               LOCK
                          Dummy
                          Dummy
                          Adapter
1 2
                 20(7)B    19(8)B
                                      Ω
                          SRSCM
                                                                                                             ERBF500Y
YES
NO
     1)   Measure resistance between the terminal 1 of SAB harness connector and the terminal 20(7) of SRSCM harness
          connector(B).
     2)   Measure resistance between the terminal 2 of SAB harness connector and the terminal 19(8) of SRSCM harness
          connector(B).
           LOCK
                            SAB
                                         Ω
                    1           2
20(7)B 19(8)B
                        SRSCM
                                                                                          SCMRT6151D
YES
NO
▶Repair or replace the wiring harness between the SAB and the SRSCM.
             LOCK
                             SAB
1 2
                                         Ω
                  20(7)B     19(8)B
                            SRSCM
                                                                                            ERBF200I
YES
▶ Go to next step.
NO
▶ Repair or replace the wiring harness between the SAB and the SRSCM.
The Side Airbag circuit consists of the SRSCM and two Side Airbags (SAB). The SRSCM sets above DTC(s) if it detects
short to ground on the SAB circuit.
                                                                                               SAB [Driver]
                                                  1 High 20(B)                                 Terminal            Connected to            Function
                  SAB [Driver]                    2 Low 19(B)
                                                                                                    1        SRSCM Terminal 20(B)          SAB High
                                                                                                    2        SRSCM Terminal 19(B)          SAB Low
                                                                             SRSCM
                                                                                               SAB [Passenger]
                                                  1 High 7(B)                                  Terminal      Connected to                  Function
                  SAB [Passenger]                 2 Low 8(B)
                                                                                                    1        SRSCM Terminal 7(B)           SAB High
                                                                                                    2        SRSCM Terminal 8(B)           SAB Low
[HARNESS CONNECTOR]
                                                  6     5        4      3     2       1        10       9    8      7    6      5    4     3       2       1
                                              12        11       10     9     8      7         20       19   18     17   16     15   14    13     12      11
         2    1           2      1            18        17       16     15    14     13        30       29   28     27   26     25   24    23     22      21
                                              24        23       22     21    20     19        40       39   38     37   36     35   34    33     32      31
                                                               CONNECTOR A                                               CONNECTOR B
     SAB[Driver] SAB[Passenger]                                                                                                           Shorting Bar
SRSCM
ERBF501S
1.     PREPARATION
       Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
1) Measure resistance between the terminal 1 of SAB harness connector and chassis ground.
            LOCK
                           SAB
                                          Ω
                     1           2
20(7)B 19(8)B
SRSCM
ERBF200J
YES
NO
▶ Repair or replace the wiring harness between the SAB and the SRSCM.
3) Connect the connectors of the PAB, SAB, CAB, BPT, FIS and SIS.
YES
NO
The Side Airbag circuit consists of the SRSCM and two Side Airbags (SAB). The SRSCM sets above DTC(s) if it detects
short to battery line on the SAB circuit.
                                                                                              SAB [Driver]
                                                  1 High 20(B)                                Terminal            Connected to            Function
                  SAB [Driver]                    2 Low 19(B)
                                                                                                   1        SRSCM Terminal 20(B)          SAB High
                                                                                                   2        SRSCM Terminal 19(B)          SAB Low
                                                                            SRSCM
                                                                                              SAB [Passenger]
                                                  1 High 7(B)                                 Terminal      Connected to                  Function
                  SAB [Passenger]                 2 Low 8(B)
                                                                                                   1        SRSCM Terminal 7(B)           SAB High
                                                                                                   2        SRSCM Terminal 8(B)           SAB Low
[HARNESS CONNECTOR]
                                                  6     5        4     3     2       1        10       9    8      7    6      5    4     3       2       1
                                              12       11        10    9     8      7         20       19   18     17   16     15   14    13     12      11
         2    1           2      1            18       17        16    15    14     13        30       29   28     27   26     25   24    23     22      21
                                              24       23        22    21    20     19        40       39   38     37   36     35   34    33     32      31
                                                              CONNECTOR A                                               CONNECTOR B
     SAB[Driver] SAB[Passenger]                                                                                                          Shorting Bar
SRSCM
ERBF501S
1.     PREPARATION
       Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
3) Measure voltage between the terminal 1 of SAB harness connector and chassis ground.
            ON
                           SAB
1 2
                 20(7)B    19(8)B
                                            V
                          SRSCM
                                                                                                         KRBF501A
YES
NO
▶ Repair the short to battery line circuit on wiring harness between the SAB and the SRSCM.
3) Connect the connectors of the PAB, SAB, CAB, BPT, FIS and SIS.
YES
▶ Go to next step.
NO
While start up phase, SRSCM will measure cross link of squibs. If one of them is failed during interconnection test, then
SRSCM will store interconnection fault. Once the interconnection fault is detected, it remains active continuously till the
fault is erased. Only one fault code is assigned for all interconnection fault.
1.   PREPARATION
     Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
     1)   Measure resistance between following squibs.(DAB - PAB, DAB - SAB, DAB - CAB, DAB - BPT, PAB - SAB, PAB
          - CAB, PAB - BPT, SAB - PAB, SAB - CAB, SAB - BPT, CAB - BPT)
YES
▶ Go to next step.
NO
The detecting system for side crash consists of the SRSCM and four Side Impact Sensors (SIS). The SRSCM sets above
DTC(s) if it detects that any SIS is defective or there is communication error between any SIS and the SRSCM.
                                                                                   SIS [Driver]
                                      1 High 26(B)                                 Terminal            Connected to              Function
               SIS [Driver]           2 Low 27(B)                                        1        SRSCM Terminal 26(B)           SIS High
                                                                                         2        SRSCM Terminal 27(B)           SIS Low
                                                                  SRSCM            SIS [Passenger]
                                      1 High 29(B)                                 Terminal            Connected to              Function
           SIS [Passenger]            2 Low 28(B)                                        1        SRSCM Terminal 29(B)           SIS High
                                                                                         2        SRSCM Terminal 28(B)           SIS Low
[HARNESS CONNECTOR]
                                      6     5       4        3     2      1         10       9    8     7     6      5     4    3       2       1
                                      12    11      10       9     8     7          20       19   18    17    16     15    14   13      12      11
     2    1          2   1            18    17      16       15    14    13         30       29   28    27    26     25    24   23      22      21
                                      24    23      22       21    20    19         40       39   38    37    36     35    34   33      32      31
CONNECTOR A CONNECTOR B
SCMRT6160L
1.   PREPARATION
     Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
     1)   Measure resistance between the terminal 1 of SIS harness connector and the terminal 26(29) of SRSCM harness
          connector(B).
     2)   Measure resistance between the terminal 2 of SIS harness connector and the terminal 27(28) of SRSCM harness
          connector(B).
             LOCK
                          SIS
                     1          2
                                          Ω
               26(29)B    27(28)B
                         SRSCM
                                                                                                              ERBF502E
YES
NO
▶ Repair or replace the wiring harness between the SIS and the SRSCM.
3) Connect the connectors of the PAB, SAB, CAB, BPT, FIS and SIS.
YES
▶ Go to next step.
NO
▶ Replace SIS.
The detecting system for side crash consists of the SRSCM and four Side Impact Sensors (SIS). The SRSCM sets above
DTC(s) if it detects short to ground on the SIS circuit.
                                                                                     SIS [Driver]
                                        1 High 26(B)                                 Terminal            Connected to             Function
                 SIS [Driver]           2 Low 27(B)                                        1        SRSCM Terminal 26(B)           SIS High
                                                                                           2        SRSCM Terminal 27(B)           SIS Low
                                                                    SRSCM            SIS [Passenger]
                                        1 High 29(B)                                 Terminal            Connected to             Function
             SIS [Passenger]            2 Low 28(B)                                        1        SRSCM Terminal 29(B)          SIS High
                                                                                           2        SRSCM Terminal 28(B)          SIS Low
[HARNESS CONNECTOR]
                                        6     5       4        3     2      1         10       9    8      7    6      5     4    3       2       1
                                        12    11      10       9     8     7          20       19   18    17    16     15    14   13      12      11
       2    1          2   1            18    17      16       15    14    13         30       29   28    27    26     25    24   23      22      21
                                        24    23      22       21    20    19         40       39   38    37    36     35    34   33      32      31
CONNECTOR A CONNECTOR B
SCMRT6160L
1.    PREPARATION
      Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
RT -90                                                                                             RESTRAINTS
1) Measure resistance between the terminal 1 of SIS harness connector and chassis ground.
             LOCK
                          SIS
              26(29)B
                     1
                         27(28)B
                                2
                                         Ω
SRSCM
ERBF501A
YES
NO
▶ Repair or replace the wiring harness between the SIS and the SRSCM.
3) Connect the connectors of the PAB, SAB, CAB, BPT, FIS and SIS.
YES
▶ Go to next step.
NO
The detecting system for side crash consists of the SRSCM and four Side Impact Sensors (SIS). The SRSCM sets above
DTC(s) if it detects short to battery line on the SIS circuit.
                                                                                    SIS [Driver]
                                      1 High 26(B)                                  Terminal            Connected to             Function
               SIS [Driver]           2 Low 27(B)                                         1        SRSCM Terminal 26(B)           SIS High
                                                                                          2        SRSCM Terminal 27(B)           SIS Low
                                                                  SRSCM             SIS [Passenger]
                                      1 High 29(B)                                  Terminal            Connected to             Function
           SIS [Passenger]            2 Low 28(B)                                         1        SRSCM Terminal 29(B)          SIS High
                                                                                          2        SRSCM Terminal 28(B)          SIS Low
[HARNESS CONNECTOR]
                                      6     5       4        3     2      1          10       9    8      7    6      5     4    3       2       1
                                      12    11      10       9     8      7          20       19   18    17    16     15    14   13      12      11
     2    1          2   1            18    17      16       15    14     13         30       29   28    27    26     25    24   23      22      21
                                      24    23      22       21    20     19         40       39   38    37    36     35    34   33      32      31
CONNECTOR A CONNECTOR B
SCMRT6160L
1.   PREPARATION
     Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
3) Measure voltage between the terminal 1 of SIS harness connector and chassis ground.
Specification(voltage) : Approximately 0V
             ON
                          SIS
                     1          2
             26(29)B     27(28)B
                                            V
                         SRSCM
                                                                                                             ERBF502R
YES
NO
▶Repair the short to battery line circuit on wiring harness between the SIS and the SRSCM.
3) Connect the connectors of the PAB, SAB, CAB, BPT, FIS and SIS.
YES
▶ Go to next step.
NO
The detecting system for side crash consists of the SRSCM and four Side Impact Sensors (SIS). The SRSCM sets above
DTC(s) if it detects that any SIS is defective or there is communication error between any SIS and the SRSCM.
                                                                                SIS [Driver]
                                      1 High 22(B)                              Terminal            Connected to             Function
              SIS [Driver]            2 Low 21(B)                                     1        SRSCM Terminal 22(B)          SIS High
                                                                                      2        SRSCM Terminal 21(B)          SIS Low
                                                              SRSCM             SIS [Passenger]
                                      1 High 23(B)                              Terminal            Connected to             Function
         SIS [Passenger]              2 Low 24(B)                                     1        SRSCM Terminal 23(B)          SIS High
                                                                                      2        SRSCM Terminal 24(B)          SIS Low
[HARNESS CONNECTOR]
                                      6     5      4      3    2     1           10       9    8     7   6      5   4    3       2      1
     2    1           2      1        12    11     10    9     8    7            20       19   18   17   16    15   14   13     12      11
                                      18    17     16    15    14   13           30       29   28   27   26    25   24   23     22      21
                                      24    23     22    21    20   19           40       39   38   37   36    35   34   33     32      31
                                                 CONNECTOR A                                             CONNECTOR B
   SIS[Driver] SIS[Passenger]                                                                                            Shorting Bar
                                                                               SRSCM
SCMRT6170L
1.   PREPARATION
     Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
     1)   Measure resistance between the terminal 1 of SIS harness connector and the terminal 22(23) of SRSCM harness
          connector(B).
     2)   Measure resistance between the terminal 2 of SIS harness connector and the terminal 21(24) of SRSCM harness
          connector(B).
             LOCK
                          SIS
                     1          2
                                          Ω
               22(23)B    21(24)B
                         SRSCM
                                                                                                              ERBF503E
YES
NO
▶ Repair or replace the wiring harness between the SIS and the SRSCM.
3) Connect the connectors of the PAB, SAB, CAB, BPT, FIS and SIS.
YES
▶ Go to next step.
NO
▶ Replace SIS.
The detecting system for side crash consists of the SRSCM and four Side Impact Sensors (SIS). The SRSCM sets above
DTC(s) if it detects that wrong SIS is used.
The detecting system for side crash consists of the SRSCM and four Side Impact Sensors (SIS). The SRSCM sets above
DTC(s) if it detects short to ground on the SIS circuit.
                                                                                  SIS [Driver]
                                         1 High 22(B)                             Terminal            Connected to             Function
                SIS [Driver]             2 Low 21(B)                                    1        SRSCM Terminal 22(B)          SIS High
                                                                                        2        SRSCM Terminal 21(B)          SIS Low
                                                                SRSCM             SIS [Passenger]
                                         1 High 23(B)                             Terminal            Connected to             Function
           SIS [Passenger]               2 Low 24(B)                                    1        SRSCM Terminal 23(B)          SIS High
                                                                                        2        SRSCM Terminal 24(B)          SIS Low
[HARNESS CONNECTOR]
                                         6     5     4      3    2     1           10       9    8     7    6     5   4    3       2      1
       2    1           2      1        12    11     10    9     8    7            20       19   18   17   16    15   14   13     12      11
                                        18    17     16    15    14   13           30       29   28   27   26    25   24   23     22      21
                                        24    23     22    21    20   19           40       39   38   37   36    35   34   33     32      31
                                                   CONNECTOR A                                             CONNECTOR B
     SIS[Driver] SIS[Passenger]                                                                                            Shorting Bar
                                                                                 SRSCM
SCMRT6170L
1.    PREPARATION
      Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
1) Measure resistance between the terminal 1 of SIS harness connector and chassis ground.
              LOCK
                          SIS
              22(23)B
                     1
                         21(24)B
                                2
                                         Ω
                         SRSCM
                                                                                                    ERBF502A
YES
NO
▶ Repair or replace the wiring harness between the SIS and the SRSCM.
3) Connect the connectors of the PAB, SAB, CAB, BPT, FIS and SIS.
YES
▶ Go to next step.
NO
The detecting system for side crash consists of the SRSCM and four Side Impact Sensors (SIS). The SRSCM sets above
DTC(s) if it detects short to battery line on the SIS circuit.
                                                                                    SIS [Driver]
                                         1 High 22(B)                               Terminal            Connected to              Function
                SIS [Driver]             2 Low 21(B)                                      1        SRSCM Terminal 22(B)           SIS High
                                                                                          2        SRSCM Terminal 21(B)           SIS Low
                                                                  SRSCM             SIS [Passenger]
                                         1 High 23(B)                               Terminal            Connected to              Function
           SIS [Passenger]               2 Low 24(B)                                      1        SRSCM Terminal 23(B)           SIS High
                                                                                          2        SRSCM Terminal 24(B)           SIS Low
[HARNESS CONNECTOR]
                                         6    5      4        3    2     1           10       9    8     7    6      5   4    3       2       1
       2    1           2      1        12    11     10    9       8    7            20       19   18   17    16    15   14   13     12       11
                                        18    17     16    15      14   13           30       29   28   27    26    25   24   23     22       21
                                        24    23     22    21      20   19           40       39   38   37    36    35   34   33     32       31
                                                   CONNECTOR A                                                CONNECTOR B
     SIS[Driver] SIS[Passenger]                                                                                                Shorting Bar
                                                                                   SRSCM
SCMRT6170L
1.    PREPARATION
      Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
3) Measure voltage between the terminal 1 of SIS harness connector and chassis ground.
             ON
                          SIS
                     1          2
             22(23)B     21(24)B
                                            V
                         SRSCM
                                                                                                         ERBF503R
YES
NO
▶Repair the short to battery line circuit on wiring harness between the SIS and the SRSCM.
3) Connect the connectors of the PAB, SAB, CAB, BPT, FIS and SIS.
YES
▶ Go to next step.
NO
The CAB squib circuit consists of the SRSCM and two Curtain Airbags(CAB). It causes the SRS to deploy when the SRS
deployment conditions are satisfied. The above DTC is recorded when the CAB resistance too high or low is detected in
the CAB squib circuit.
                                                                                    CAB [Driver]
                                            1 Low 1(B)                              Terminal              Connected to             Function
               CAB [Driver]                 2 High 2(B)                                1           SRSCM Terminal 1(B)             CAB Low
                                                                                       2           SRSCM Terminal 2(B)             CAB High
                                                                     SRSCM          CAB [Passenger]
                                            1 Low 11(B)                             Terminal              Connected to             Function
               CAB [Passenger]              2 High 12(B)                                                                           CAB Low
                                                                                       1           SRSCM Terminal 11(B)
                                                                                       2           SRSCM Terminal 12(B)            CAB High
[HARNESS CONNECTOR]
                                       6        5       4       3    2    1    10      9       8     7       6      5    4    3        2      1
                                       12       11      10      9    8    7    20      19   18       17      16     15   14   13      12      11
     2    1           2     1          18       17      16      15   14   13   30      29   28       27      26     25   24   23      22      21
                                       24       23      22      21   20   19   40      39   38       37      36     35   34   33      32      31
                                                     CONNECTOR A                                          CONNECTOR B
                                                                                                                                    Shorting Bar
  CAB[Driver] CAB[Passenger]                                                    SRSCM
SCMRT6180L
SPECIFICATION E7348974
1.   PREPARATION
     Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
          CAUTION
     Never attempt to measure the circuit resistance of the airbag module(squib) even if you are using the speci-
     fied tester.
     1)   Connect the Dummy and the Dummy Adapter on CAB harness connector.
          ● Refer to "SPECIAL SERVICE TOOL" section in this SERVICE MANUAL for the SST No. of Dummy and
          Dummy Adapter.
2) Measure resistance between the terminal 2(12) and 1(11) of SRSCM harness connector(B).
           LOCK
                       Dummy
                       Dummy
                       Adapter
1 2
              1(11)B    2(12)B
                                        Ω
                       SRSCM
                                                                                                          ERBF200O
YES
NO
     1)   Measure resistance between the terminal 2 of CAB harness connector and the terminal 2(12) of SRSCM harness
          connector(B).
     2)   Measure resistance between the terminal 1 of CAB harness connector and the terminal 1(11) of SRSCM harness
          connector(B).
             LOCK
                           CAB
                      1          2
                                          Ω
                 1(11)B    2(12)B
SRSCM
ERBF200P
YES
NO
▶Repair or replace the wiring harness between the CAB and the SRSCM.
            LOCK
                           CAB
1 2
                                          Ω
               1(11)B      2(12)B
SRSCM
                                                                                                             ERBF200Q
TROUBLESHOOTING                                                                     RT -105
YES
▶ Go to next step.
NO
▶ Repair or replace the wiring harness between the CAB and the SRSCM.
The CAB squib circuit consists of the SRSCM and two Curtain Airbags (CAB). It causes the SRS to deploy when the
SRS deployment conditions are satisfied. The above DTC is recorded when short to ground is detected in the CAB squib
circuit.
                                                                                           CAB [Driver]
                                            1 Low 1(B)                                     Terminal              Connected to             Function
                 CAB [Driver]               2 High 2(B)                                       1           SRSCM Terminal 1(B)             CAB Low
                                                                                              2           SRSCM Terminal 2(B)             CAB High
                                                                      SRSCM                CAB [Passenger]
                                            1 Low 11(B)                                    Terminal              Connected to             Function
                 CAB [Passenger]            2 High 12(B)                                                                                  CAB Low
                                                                                              1           SRSCM Terminal 11(B)
                                                                                              2           SRSCM Terminal 12(B)            CAB High
[HARNESS CONNECTOR]
                                       6          5        4     3     2      1       10      9       8     7       6      5    4    3        2      1
                                       12        11        10    9    8       7       20      19   18       17      16     15   14   13      12      11
       2    1           2   1          18        17        16    15   14      13      30      29   28       27      26     25   24   23      22      21
                                       24        23        22    21   20      19      40      39   38       37      36     35   34   33      32      31
                                                      CONNECTOR A                                                CONNECTOR B
                                                                                                                                           Shorting Bar
     CAB[Driver] CAB[Passenger]                                                        SRSCM
SCMRT6180L
1.    PREPARATION
      Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
TROUBLESHOOTING                                                                                    RT -107
1) Measure resistance between the terminal 2 of CAB harness connector and chassis ground.
           LOCK
                       CAB
                   1         2
                                         Ω
              1(11)B    2(12)B
SRSCM
ERBF200R
YES
NO
▶ Repair or replace the wiring harness between the CAB and the SRSCM.
3) Connect the connectors of the PAB, SAB, CAB, BPT, FIS and SIS.
YES
▶ Go to next step.
NO
The CAB squib circuit consists of the SRSCM and CAB. It causes the SRS to deploy when the SRS deployment conditions
are satisfied. The above DTC is recorded when short to battery is detected in the CAB squib circuit.
                                                                                           CAB [Driver]
                                             1 Low 1(B)                                    Terminal              Connected to             Function
               CAB [Driver]                  2 High 2(B)                                      1           SRSCM Terminal 1(B)             CAB Low
                                                                                              2           SRSCM Terminal 2(B)             CAB High
                                                                      SRSCM                CAB [Passenger]
                                             1 Low 11(B)                                   Terminal              Connected to             Function
               CAB [Passenger]               2 High 12(B)                                                                                 CAB Low
                                                                                              1           SRSCM Terminal 11(B)
                                                                                              2           SRSCM Terminal 12(B)            CAB High
[HARNESS CONNECTOR]
                                         6       5       4       3    2       1       10      9       8     7       6      5    4    3        2      1
                                     12          11      10      9    8       7       20      19   18       17      16     15   14   13      12      11
     2    1           2   1          18          17      16      15   14      13      30      29   28       27      26     25   24   23      22      21
                                     24          23      22      21   20      19      40      39   38       37      36     35   34   33      32      31
                                                      CONNECTOR A                                                CONNECTOR B
                                                                                                                                           Shorting Bar
  CAB[Driver] CAB[Passenger]                                                           SRSCM
SCMRT6180L
1.   PREPARATION
     Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
3) Measure voltage between the terminal 2 of CAB harness connector and chassis ground.
           ON
                          CAB
1 2
                1(11)B    2(12)B
                                            V
SRSCM
ERBF200S
YES
NO
▶ Repair the short to battery line circuit on wiring harness between the CAB and the SRSCM.
3) Connect the connectors of the PAB, SAB, CAB, BPT, FIS and SIS.
YES
▶ Go to next step.
NO
The deactivation system for the passenger airbag consists of the SRSCM and the Passenger Airbag Deactivation(PAD)
switch. The above DTC is recorded when PAD switch open or short to battery is detected in the PAD circuit.
                                                                                        [PAD Switch]
                            1         High            19(A)
                                                                                         Terminal         Connected to                 Function
           PAD              2         Low             21(A)
          Switch                                                      SRSCM                 1        SRSCM Terminal 19(A)           PAD SW High
                            4                                                               2        SRSCM Terminal 21(A)           PAD SW Low
                                                                                            4                   IG1               Battery Voltage
                                     IG1
[HARNESS CONNECTOR]
                                                 6       5       4      3     2    1            10   9     8     7     6     5    4      3      2       1
                                                 12     11       10    9      8    7            20   19    18    17   16     15   14     13    12       11
                                                 18     17       16    15     14   13           30   29    28    27   26     25   24     23    22       21
           4        2 1                          24     23       22    21     20   19           40   39    38    37   36     35   34     33    32       31
                *                                             CONNECTOR A                                             CONNECTOR B
                                                                                                                                         Shorting Bar
SPECIFICATION EDC39A07
1.   PREPARATION
     Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
     2)   Measure resistance between the terminal 19 of the SRSCM harness connector(A) and 1 of PAD switch harness
          connector.
     3)   Measure resistance between the terminal 21 of the SRSCM harness connector(A) and 2 of PAD switch harness
          connector.
          LOCK
                         PAD Switch
2 1 4
Ω IG1
21(A) 19(A)
                          SRSCM
                                                                                                           ERBF500Z
YES
NO
▶ Replace the harness between the SRSCM and the PAD switch.
4) Measure voltage between the terminal 1 of PAD switch harness connector and chassis ground.
          ON
                       PAD Switch
2 1 4
                                            IG1
                               V
               21(A)   19(A)
                        SRSCM
                                                                                                           ERBF503A
YES
▶ Go to next step.
NO
▶ Repair or replace the wiring harness between the PAD switch and the SRSCM.
     5)   Measure resistance between the terminal 19 of the SRSCM harness connector(A) and 1 of PAD switch harness
          connector.
 Specification (resistance :
 PAD switch ON (Enabled positon) : 728 ~ 1,567 Ω
 PAD switch OFF (Disabled positon) : 301 ~ 706 Ω
          ON
                       PAD Switch
2 1 4
                               Ω            IG1
               21(A)   19(A)
                        SRSCM
                                                                                                           ERBF504B
RT -114                                                                             RESTRAINTS
YES
▶ Go to next step.
NO
The deactivation system for the passenger airbag consists of the SRSCM and the Passenger Airbag Deactivation(PAD)
switch. The above DTC is recorded when PAD switch short or short to ground is detected in the PAD system circuit.
                                                                                       [PAD Switch]
                            1         High           19(A)
                                                                                        Terminal         Connected to                 Function
           PAD              2         Low            21(A)
          Switch                                                     SRSCM                 1        SRSCM Terminal 19(A)           PAD SW High
                            4                                                              2        SRSCM Terminal 21(A)           PAD SW Low
                                                                                           4                   IG1               Battery Voltage
                                     IG1
[HARNESS CONNECTOR]
                                                 6      5       4      3     2    1            10   9     8     7     6     5    4      3      2       1
                                             12        11       10    9      8    7            20   19    18    17   16     15   14     13    12       11
                                             18        17       16    15     14   13           30   29    28    27   26     25   24     23    22       21
           4        2 1                      24        23       22    21     20   19           40   39    38    37   36     35   34     33    32       31
                *                                               CONNECTOR A                                          CONNECTOR B
                                                                                                                                        Shorting Bar
SPECIFICATION EB1FB32A
1.   PREPARATION
     Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
2) Measure resistance between the terminal 1 of PAD switch harness connector and chassis ground.
          LOCK
                         PAD Switch
                    2       1        4
                                 Ω          IG1
21(A) 19(A)
                          SRSCM
                                                                                                           ERBF502C
YES
NO
▶ Replace the harness between the SRSCM and the PAD switch.
2 1 4
     Ω                                    IG1
                                                      Ω
                21(A)    19(A)
                          SRSCM
                                                                                                            ERBF501D
YES
▶ Go to next step.
NO
▶ Repair or replace the wiring harness between the PAD switch and the SRSCM.
     5)    Measure resistance between the terminal 19 of the SRSCM harness connector(A) and 1 of PAD switch harness
           connector.
 Specification (resistance :
 PAD switch ON (Enabled positon) : 728 ~ 1,567 Ω
 PAD switch OFF (Disabled positon) : 301 ~ 706 Ω
          ON
                         PAD Switch
2 1 4
                                  Ω             IG1
                 21(A)    19(A)
                           SRSCM
                                                                                                            ERBF501E
RT -118                                                                             RESTRAINTS
YES
▶ Go to next step.
NO
The deactivation system for the passenger airbag consists of the SRSCM and the Passenger Airbag Deactivation(PAD)
switch. The above DTC is recorded when the defect or instability of PAD switch is detected in the PAD system circuit.
                                                                                       [PAD Switch]
                            1         High           19(A)
                                                                                        Terminal         Connected to                 Function
           PAD              2         Low            21(A)
          Switch                                                     SRSCM                 1        SRSCM Terminal 19(A)           PAD SW High
                            4                                                              2        SRSCM Terminal 21(A)           PAD SW Low
                                                                                           4                   IG1               Battery Voltage
                                     IG1
[HARNESS CONNECTOR]
                                                 6      5       4      3     2    1            10   9     8     7     6     5    4      3      2       1
                                             12        11       10    9      8    7            20   19    18    17   16     15   14     13    12       11
                                             18        17       16    15     14   13           30   29    28    27   26     25   24     23    22       21
           4        2 1                      24        23       22    21     20   19           40   39    38    37   36     35   34     33    32       31
                *                                               CONNECTOR A                                          CONNECTOR B
                                                                                                                                        Shorting Bar
SPECIFICATION E25793DB
1.   PREPARATION
     Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
3) Measure voltage between the terminal and 4 of PAD switch harness connector and chassis ground.
          ON
                       PAD Switch
                  2       1     4
                                        V
                                            IG1
21(A) 19(A)
                        SRSCM
                                                                                                           ERBF501F
YES
NO
▶Replace the harness between the battery line and the PAD switch.
4) Measure resistance between the terminal 2 of PAD switch harness connector and chassis ground.
 Specification (resistance) : 0 Ω
TROUBLESHOOTING                                                                                         RT -121
               LOCK
                            PAD Switch
                Ω
                       2           1           4
IG1
21(A) 19(A)
                               SRSCM
                                                                                                           ERBF501G
YES
▶ Go to next step.
NO
▶ Repair or replace the wiring harness between the PAD switch and the chassis ground.
     5)   Measure resistance between the terminal 19 of the SRSCM harness connector(A) and 1 of PAD switch harness
          connector.
 Specification (resistance :
 PAD switch ON (Enabled positon) : 728 ~ 1,567 Ω
 PAD switch OFF (Disabled positon) : 301 ~ 706 Ω
          ON
                       PAD Switch
2 1 4
                                       Ω           IG1
               21(A)       19(A)
                           SRSCM
                                                                                                           ERBF501E
RT -122                                                                             RESTRAINTS
YES
▶ Go to next step.
NO
The Supplemental Restraint System Control Module (SRSCM) runs diagnostics to monitor the condition of its internal
circuits and all external components in the restraint system. If a fault is detected in the electronic accelerometor or in the
microprocessor, the SRSCM will inhibit deployment to minimize the risk of inadvertent deployments.
Once an internal fault is qualified, the internal fault is latched and warning lamp will be turned on. If an internal fault is
qulified, the SRSCM must be replaced. The Hi-Scan tool can’t clear an internal fault. All internal faults are DTC B1620.
If the above mentioned DTC is confirmed it can’t be cleared by Hi-Scan tool, the SRSCM should be replaced.
RT -124                                                                                                                                 RESTRAINTS
When a deployment of any restraint system for seat belt pretensioner and frontal and side air bags occurs, the crash
output is activated. The purpose of this output is to signal BCM (Body Control Module) in the vehicle to unlock the vehicle
doors. If a crash output is in progress, a second crash output signal will not be sent unless the first one is completed.
The SRSCM doesn’t perform diagnostics on the crash output function. After a frontal or side crash event is sensed and
algorithm makes firing decision, above mentioned crash record is stored after squib deployment.
[HARNESS CONNECTOR]
                                                  6        5       4      3    2     1      10    9    8         7    6       5    4      3     2       1
   13 12 11 10                                12        11        10      9    8    7       20    19   18        17   16      15   14     13    12     11
                  8 7 6       4 3  *    1
               *          *
   26 25 24 23 22 21 20 19 18 17 16 15 14
                                              18        17        16      15   14   13      30    29   28        27   26      25   24     23    22     21
                                              24        23        22      21   20   19      40    39   38        37   36      35   34     33    32     31
                                                                 CONNECTOR A                                    CONNECTOR B
                                                                                                                                               Shorting Bar
                   BCM
                                                                                    SRSCM
SCMRT6190L
If the above mentioned DTC is confirmed it can’t be cleared by Hi-Scan tool except for the B1657, and the SRSCM
should be replaced. However, for the DTC B1657, Belt pretensioner only deployment, it can be erased for 5 times and
the SRSCM can be reusable. If the deployment of Belt pretensioner reaches to 6 times, the SRSCM will set DTC B1658
and the SRSCM should be replaced accordingly.
TROUBLESHOOTING                                                                                                                                           RT -125
The SRS warning lamp is located in the cluster. When the airbag system is normal, the SRS warning lamp turns on for
approx. 6 seconds after the ignition switch is turned to ON, and then turns off automatically. If there is a malfunction in
the airbag system, the SRS warning lamp lights up to inform the driver of the abnormality. The SRSCM shall measure
the voltage at the SRS warning lamp output pin, both when the lamp is on and when the lamp is off, to detect whether the
commanded state matches the actual state.
                                               IG1
                                                                                           [Instrument Cluster]
     Instrument Cluster
                                                                                            Terminal             Connected to                   Function
                                4                                                                 4                       IG1                Battery Voltage
                                                                                                  5        SRSCM Terminal 1(A)                Lamp Control
                    Bulb                                                 SRSCM
                                5                         1(A)
[HARNESS CONNECTOR]
                                           6         5       4       3     2       1         10       9     8        7      6      5    4       3        2         1
                                          12         11     10       9     8      7          20       19    18       17     16     15   14      13      12      11
      6    5    4   3   2   1             18         17     16       15    14     13         30       29    28       27     26     25   24      23      22      21
                                          24         23     22       21    20     19         40       39    38       37     36     35   34      33      32      31
      12 11 10 9        8   7
                                                         CONNECTOR A                                                      CONNECTOR B
                                                                                                                                                    Shorting Bar
1.   PREPARATION
     Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
1) Remove the airbag fuse and the airbag warning lamp fuse from junction box.
YES
NO
YES
NO
3) Measure voltage between the terminal 2 of the Instrument Cluster harness connector and chassis ground.
             ON         Warning
                         Lamp
4 5
                                            V
              IG1          1(A)
                        SRSCM
                                                                                                            SCMRT6201L
YES
NO
▶Repair or replace the wiring harness between ignition switch and the Warning Lamp.
1) Measure voltage between the terminal 5 of the Instrument Cluster harness connector and chassis ground.
              ON        Warning
                        Lamp
4 5
                                          V
              IG1           1(A)
                        SRSCM
                                                                                                            SCMRT6202L
YES
NO
▶ Repair the short to battery line circuit on wiring harness between the SRSCM and the Warning Lamp.
3) Measure resistance between the terminal 5 of the Instrument Cluster harness connector and chassis ground.
4) Measure resistance between the terminal 4 and 5 of the Instrument Cluster harness connector.
               LOCK              Warning
                                  Lamp
                             4            5
          Ω                                   Ω
                   IG1               1(A)
                                 SRSCM
                                                                                                           SCMRT6203L
YES
NO
▶ Repair the short or short to ground circuit on wiring harness between the SRSCM and the Warning Lamp.
     1)   Measure resistance between the terminal 5 of the Instrument Cluster connector and the terminal 1 of SRSCM
          harness connector(A).
              LOCK           Warning
                              Lamp
                         4            5
                                              Ω
              IG1                  1(A)
                             SRSCM
                                                                                                           SCMRT6204L
YES
▶ Go to next step.
NO
▶ Repair the open circuit on wiring harness between the SRSCM and the Warning Lamp.
The SRSCM shall detect and record the following situations. And a single fault code shall be assigned as PAD Lamp Fault
for all PAD lamp fault conditions. This fault code shall be set whenever either of the fault conditions is detected. If both
fault conditions are not detected, the fault code shall not be detected.
1.   The bulb is short, or there is a short to battery condition on the PAD lamp input connection to the SRSCM. This
     condition is only detectable while the PAD lamp is commanded ON. If a short to battery condition is detected, the
     PAD lamp shall be commanded OFF for 15 seconds to protect the circuit.
2.   The bulb is open, or there is a short to ground condition. This condition is only detectable while the PAD lamp is
     commanded OFF. If the PAD lamp is ON and a short to ground condition is present, the SRSCM shall command the
     PAD lamp OFF for a maximum of 1ms during each diagnostic cycle.
                                                IG1
                                                                                   [Instrument Cluster]
     Instrument Cluster
                                                                                    Terminal          Connected to                     Function
                     Bulb                                              SRSCM
                                 3                     23(A)
[HARNESS CONNECTOR]
                                          6       5      4        3     2      1   10       9    8        7      6     5    4      3         2        1
                                          12      11     10       9     8    7     20       19   18   17         16    15   14    13        12        11
       6    5    4   3   2   1
                                          18      17     16       15    14   13    30       29   28   27         26    25   24    23        22        21
                                          24      23     22       21    20   19    40       39   38   37         36    35   34    33        32        31
       12 11 10 9        8   7
                                                       CONNECTOR A                                            CONNECTOR B
SRSCM
                                                                                                                                                 SCMRT6210L
RT -130                                                                                            RESTRAINTS
1.   PREPARATION
     Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
1) Remove the airbag fuse and the PAD lamp fuse from junction box.
YES
NO
YES
NO
3) Measure voltage between the terminal 4 of the Instrument Cluster harness connector and chassis ground.
             ON         PAD
                        Lamp
4 3
                                          V
              IG1         23(A)
                        SRSCM
                                                                                                             SCMRT6211L
YES
NO
▶ Repair or replace the wiring harness between ignition switch and the PAD Lamp.
1) Measure voltage between the terminal 3 of the Instrument Cluster harness connector and chassis ground.
              ON         PAD
                         Lamp
4 3
                                          V
              IG1          23(A)
                        SRSCM
                                                                                                             SCMRT6212L
YES
NO
          ▶ Repair the short to battery line circuit on wiring harness between the SRSCM and the PAD Lamp.
RT -132                                                                                             RESTRAINTS
3) Measure resistance between the terminal 3 of the Instrument Cluster harness connector and chassis ground.
4) Measure resistance between the terminal 4 and 3 of the Instrument Cluster harness connector.
                LOCK              PAD
                                  Lamp
                             4              3
          Ω                                     Ω
                   IG1               23(A)
                                 SRSCM
                                                                                                            SCMRT6213L
YES
NO
▶ Repair the short or short to ground circuit on wiring harness between the SRSCM and the PAD Lamp.
     1)   Measure resistance between the terminal 3 of the Instrument Cluster connector and the terminal 23 of SRSCM
          harness connector(A).
              LOCK               PAD
                                 Lamp
                         4              3
                                                Ω
               IG1                 23(A)
                             SRSCM
                                                                                                            SCMRT6214L
TROUBLESHOOTING                                                                             RT -133
YES
▶ Go to next step.
NO
▶ Repair the open circuit on wiring harness between the SRSCM and the PAD Lamp.
If an SRS equipped vehicle is to be entirely scrapped, its      4.   Connect a 12 volt battery to the tool.
airbags or side airbags should be deployed while still in the
                                                                5.   Push the tool’s deployment switch. The airbag should
vehicle. The airbags or side airbags should not be consid-
                                                                     deploy (deployment is both highly audible and visible:
ered as salvageable parts and should never be installed in
                                                                     a loud noise and rapid inflation of the bag, followed by
another vehicle.
                                                                     slow deflection)
1.   Turn the ignition switch OFF, and disconnect the bat-
                                                                6.   Dispose of the complete airbag. No part of it can be
     tery negative cable and wait at least three minutes.
                                                                     reused. Place it in a sturdy plastic bag and seal it
2.   Confirm that each airbag or side airbag is securely             securely.
     mounted.
DRIVER’S AIRBAG :
                                                                                                                     ERKD002U
AIR BAG MODULE DISPOSAL                                         RT -135