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Airbag

The document outlines the diagnostic procedures for the Supplemental Restraints System Control Module (SRSCM) related to airbag functionality, focusing on voltage checks and diagnostic trouble codes (DTCs) B1101, B1102, B1328, and B1329. It details the conditions under which these DTCs are set, possible causes of malfunctions, and the steps for troubleshooting and verification after repairs. The importance of checking connections, harness integrity, and ensuring proper voltage levels is emphasized throughout the procedures.

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reza mohamadtabar

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0% found this document useful (0 votes)

33 views248 pages

Airbag

Uploaded by

reza mohamadtabar

We take content rights seriously. If you suspect this is your content, claim it here.

Available Formats

Download as PDF, TXT or read online on Scribd

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TF121711110111

SRSCM (Supplemental Restraints System Control

Module) checks input voltage when "IG ON" to make air
bag system work properly.
If input voltage is out of normal range, there can be
malfunction in system operation. In this case, Check
battery and charging system.

The SRSCM sets DTC B1101 and turns warning light on

if voltage above threshold value is detected for more
than 4 sec.
(If voltage within threshold value is detected When the
SRSCM returns to normal condition. SRSCM regards
DTC as being cleared and turns warning light off).

DTC Strategy • Check voltage

1. Poor connection of connected
Enable Conditions • Ignition "ON" part.
2. Open/Short circuit in power h-
Threshold Value • Vbatt ≥ 16
arness.
Qualificati- 3. Open/Short circuit in ground h-
• More than 4 sec
Diagnostic on arness.
Time 4. Faulty charging system.
De-Qualifi-
• More than 4 sec 5. Faulty SRSCM.
cation

Idle & WOT Approx. 9 ≤ Vbatt ≤ 16

TF1217111101DD

1. Ignition "OFF", connect scantool.

2. Ignition "ON"& Engine "OFF", select "Current Data"
mode.
3. Monitor the "Battery Voltage" parameter on the
Scantool.
Approx. 9 ≤ Vbatt ≤ 16
TF121711110121S

Fig.1) Normal Data ▶ Go to "Charging System Inspection" proced-

4. Is parameter displayed within specifications? ure.
▶ Go to "W/Harness Inspection" procedure.
▶ Displaying nothing(no DTC) or DTC with la- 1. Engine "ON", headight and heatwire "ON".
bel "H"(historical) shows that Fault is intermitte- 2. Measure voltage between the battery terminal (+)
nt caused by poor contact in the part's and/or and (-) maintaining ENG. RPM 2,500RPM (idle) over
SRSCM connector or was repaired and SRSC- 2 minutes.
M memory was not cleared.
Approx. 9 ≤ Vbatt ≤ 16
Thoroughly check connectors for looseness, p-
oor connection, bending, corrosion, contamin-
ation, deterioration, or damage.
▶ Repair or replace as necessary and then go
to "Verification of Vehicle Repair" procedure.

1. Many malfunctions in the electrical system are

caused by poor harness and terminals.
Faults can also be caused by interference from other
electrical systems, and mechanical or chemical
damage.
2. Thoroughly check connectors for looseness, poor
connection, bending, corrosion, contamination,
deterioration, or damage.
3. Has a problem been found?
▶ Repair as necessary and then go to "Verific-
ation of Vehicle Repair" procedure.
TF121711110131

3. Is the measured voltage within specifications?

▶ Go to "Power Circuit Inspection" procedure.
▶ Substitute with a known-good alternator and
check for proper operation.
If the problem is corrected, replace alternator
and then go to "Verification of Vehicle Repair"
procedure.

1. Ignition "OFF'.
2. Disconnect the battery (-) terminal cable from the
battery, and wait at least one minutes.
3. Disconnect the SRSCM connector.
4. Connect the battery (-) terminal cable and start
engine.
5. Measure voltage between power terminal of the
SRSCM harness connector and chassis ground.

Approx. 9 ≤ Vbatt ≤ 16
TF121711110132

6. Is the measured voltage within specifications?

▶ Go to "Ground circuit inspection" procedure
.
▶ Thoroughly check all connectors (and conn-
ections) for looseness, bending, corrosion, co-
ntamination, deterioration, and/or damage.
Repair as necessary and then go to "Verificati-
on of Vehicle Repair" procedure.

1. Ignition "OFF".
2. Disconnect the battery (-) terminal cable from the
battery, and wait at least one minutes.
3. Disconnect the SRSCM connector.
4. Measure resistance between ground terminal of the
SRSCM harness connector and chassis ground.

Approx. 1 Ω below.
TF121711110133

5. Is the measured resistance within specifications? ▶ Go to the applicable troubleshooting proce-

▶ Substitute a known-good SRSCM, and che- dure.
ck for proper operation. ▶ System is performing to specification at this
If the problem is corrected, replace SRSCM a- time.
nd then go to "Verification of Vehicle Repair" p-
rocedure.
▶ Substitute the SRSCM main harness and ch-
eck for proper operation.
If the problem is corrected, replace SRSCM m-
ain harness and then go to "Verification of Veh-
icle Repair" procedure.

After a repair, it is essential to verify that the fault has

SRSCM (Supplemental Restraints System Control

The SRSCM sets DTC B1102 and turns warning light on

if voltage below threshold value is detected for more
than 4 sec.
(If voltage within threshold value is detected When the
SRSCM returns to normal condition. SRSCM regards
DTC as being cleared and turns warning light off).

DTC Strategy • Check voltage

1. Poor connection of connected
Enable Conditions • Ignition "ON" part.
2. Open/Short circuit in power h-
Threshold Value • Vbatt ≤ 9
arness
Qualificati- 3. Open/Short circuit in ground h-
• More than 4 sec
Diagnostic on arness.
Time 4. Faulty charging system.
De-Qualifi-
• More than 4 sec 5. Faulty SRSCM.
cation

Idle & WOT Approx. 9 ≤ Vbatt ≤ 16

TF1217111101DD

1. Ignition "OFF", connect scantool.

2. Ignition "ON"& Engine "OFF", select "Current Data"
mode.
3. Monitor the "Battery Voltage" parameter on the
Scantool.
Approx. 9 ≤ Vbatt ≤ 16
TF121711110121S

Fig.1) Normal Data ▶ Go to "Charging System Inspection" proced-

1. Many malfunctions in the electrical system are

3. Is the measured voltage within specifications?

Approx. 9 ≤ Vbatt ≤ 16
TF121711110132

6. Is the measured voltage within specifications?

Approx. 1 Ω below.
TF121711110133

5. Is the measured resistance within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

Front Impact Sensor(FIS)located at both sides of the

front of engine room detects head-on collision.
When FIS delivers collision signal to SRSCM, SRSCM
checks if safing sensor located in SRSCM detects
collusion.
and if both FIS and safing sensor detects collision
simultaneously, SRSCM operates front air bag.

The SRSCM sets DTC B1328 if there is any fault in Driver

side front impact sensor.

DTC Strategy • Check Data

Enable Conditions • Ignition "ON"
• DFIS send defect code 1. Poor connection of connected
Threshold Value
• DFIS output is not expected value part.
2. Faulty DFIS.
Qualificati-
• More than 1 sec 3. Faulty SRSCM.
Diagnostic on
Time De-Qualifi-
• More than 2 sec
cation
TF1317111328DD

1. Ignition "OFF", connect scantool.

2. Ignition "ON"& Engine "OFF", select "Diagnostic
Trouble Codes(DTC)" mode.
3. Monitor diagnostic trouble code and present of
trouble code.
4. Using a scan tool, clear the DTC.

STDRT0501N

5. Is DTC present problem ?

▶ Go to "W/Harness Inspection" procedure.
▶ Displaying nothing(no DTC) or DTC with la- ▶ Substitute a known-good DFIS, and check f-
bel "H"(historical) shows that Fault is intermitte- or proper operation.
nt caused by poor contact in the part's and/or If the problem is corrected, replace DFIS and
SRSCM connector or was repaired and SRSC- then go to "Verification of Vehicle Repair" proc-
M memory was not cleared. edure.
Thoroughly check connectors for looseness, p-
oor connection, bending, corrosion, contamin-
ation, deterioration, or damage. After a repair, it is essential to verify that the fault has
▶ Repair or replace as necessary and then go been corrected.
to "Verification of Vehicle Repair" procedure. 1. Connect scan tool and select "Diagnostic Trouble
Codes(DTC)" mode
2. Using a scan tool, clear the DTC.
1. Many malfunctions in the electrical system are
caused by poor harness and terminals. 3. Operate the vehicle within DTC Enable conditions in
General information.
Faults can also be caused by interference from other
electrical systems, and mechanical or chemical 4. Are any DTC present ?
damage. ▶ Go to the applicable troubleshooting proce-
2. Thoroughly check connectors for looseness, poor dure.
connection, bending, corrosion, contamination, ▶ System is performing to specification at this
deterioration, or damage. time.
3. Has a problem been found?
▶ Repair as necessary and then go to "Verific-
ation of Vehicle Repair" procedure.
▶ Go to "Component Inspection" procedure.

1. Ignition "ON" & Engine "OFF" and Using a scan tool,

clear the DTC.
2. Ignition "OFF".
3. Disconnect the battery (-) terminal cable from the
battery, and wait at least one minutes.
4. Disconnect DFIS connector .
5. Substitute the DFIS and check for proper operation.
6. Is DTC present problem ?
▶ Substitute a known-good SRSCM, and che-
ck for proper operation.
If the problem is corrected, replace SRSCM a-
nd then go to "Verification of Vehicle Repair" p-
rocedure.
▶ Substitute the SRSCM main harness and ch-
eck for proper operation.
If the problem is corrected, replace SRSCM m-
ain harness and then go to "Verification of Veh-
icle Repair" procedure.
TF121711132811

Front Impact Sensor(FIS)located at both sides of the

The SRSCM sets DTC B1329 if there is any error in

communication between DFIS and SRSCM

DTC Strategy • Check Data

Enable Conditions • Ignition "ON"
• DFIS no acceleration data 1. Short to power in harness.
• DFIS High or Low of wire ignition short or Short to grou- 2. Short to ground in harness.
Threshold Value
nd 3. Poor connection of connected
• DFIS High or Low of wire Open part(open).
4. Faulty DFIS.
Qualificati-
• More than 1 sec 5. Faulty SRSCM.
Diagnostic on
Time De-Qualifi-
• More than 2 sec
cation
TF1317111328DD

1. Ignition "OFF", connect scantool.

2. Ignition "ON"& Engine "OFF", select "Diagnostic
Trouble Codes(DTC)" mode.
3. Monitor diagnostic trouble code and present of
trouble code.
4. Using a scan tool, clear the DTC.

STDRT0502N

5. Is DTC present problem ?

1. Ignition "ON" & Engine "OFF" and Using a scan tool,

clear the DTC.
2. Ignition "OFF".
3. Disconnect the battery (-) terminal cable from the
battery, and wait at least one minutes.
4. Disconnect DFIS connector .
5. Substitute the DFIS and check for proper operation.
6. Is DTC present problem ?
▶ Substitute a known-good SRSCM, and che-
ck for proper operation.
If the problem is corrected, replace SRSCM a-
nd then go to "Verification of Vehicle Repair" p-
rocedur
▶ Substitute the SRSCM main harness and ch-
eck for proper operation.
If the problem is corrected, replace SRSCM m-
ain harness and then go to "Verification of Veh-
icle Repair" procedure.
TF121711132811

Front Impact Sensor(FIS)located at both sides of the

The SRSCM sets DTC B1333 if there is any fault in

Passenger side front impact sensor

DTC Strategy • Check Data

Enable Conditions • Ignition "ON"
• PFIS send defect code 1. Poor connection of connected
Threshold Value
• PFIS output is not expected value part.
2. Faulty PFIS.
Qualificati-
• More than 2 sec 3. Faulty SRSCM.
Diagnostic on
Time De-Qualifi-
• More than 2 sec
cation
TF1317111333DD

1. Ignition "OFF", connect scantool.

2. Ignition "ON"& Engine "OFF", select "Diagnostic
Trouble Codes(DTC)" mode.
3. Monitor diagnostic trouble code and present of
trouble code.
4. Using a scan tool, clear the DTC.

STDRT0503N

5. Is DTC present problem ?

▶ Go to "W/Harness Inspection" procedure.
▶ Displaying nothing(no DTC) or DTC with la- ▶ Substitute a known-good PFIS, and check f-
bel "H"(historical) shows that Fault is intermitte- or proper operation.
nt caused by poor contact in the part's and/or If the problem is corrected, replace PFIS and t-
SRSCM connector or was repaired and SRSC- hen go to "Verification of Vehicle Repair" proc-
M memory was not cleared. edure.
Thoroughly check connectors for looseness, p-
oor connection, bending, corrosion, contamin-
ation, deterioration, or damage. After a repair, it is essential to verify that the fault has
▶ Repair or replace as necessary and then go been corrected.
to "Verification of Vehicle Repair" procedure 1. Connect scan tool and select "Diagnostic Trouble
Codes(DTC)" mode
2. Using a scan tool, clear the DTC.
1. Many malfunctions in the electrical system are
caused by poor harness and terminals. 3. Operate the vehicle within DTC Enable conditions in
General information.
Faults can also be caused by interference from other
electrical systems, and mechanical or chemical 4. Are any DTC present ?
damage. ▶ Go to the applicable troubleshooting proce-
2. Thoroughly check connectors for looseness, poor dure.
connection, bending, corrosion, contamination, ▶ System is performing to specification at this
deterioration, or damage. time.
3. Has a problem been found?
▶ Repair as necessary and then go to "Verific-
ation of Vehicle Repair" procedure.
▶ Go to "Component Inspection" procedure.

1. Ignition "ON" & Engine "OFF" and Using a scan tool,

clear the DTC.
2. Ignition "OFF".
3. Disconnect the battery (-) terminal cable from the
battery, and wait at least one minutes.
4. Disconnect PFIS connector .
5. Substitute the PFIS and check for proper operation.
6. Is DTC present problem ?
▶ Substitute a known-good SRSCM, and che-
ck for proper operation.
If the problem is corrected, replace SRSCM a-
nd then go to "Verification of Vehicle Repair" p-
rocedure.
▶ Substitute the SRSCM main harness and ch-
eck for proper operation.
If the problem is corrected, replace SRSCM m-
ain harness and then go to "Verification of Veh-
icle Repair" procedure.
TF121711132811

Front Impact Sensor(FIS)located at both sides of the

The SRSCM sets DTC B1334 if there is any error in

communication between PFIS and SRSCM.

DTC Strategy • Check Data

Enable Conditions • Ignition "ON"
• PFIS no acceleration data 1. Short to power in harness.
• PFIS High or Low of wire ignition short or Short to grou- 2. Short to ground in harness.
Threshold Value
nd 3. Poor connection of connected
• PFIS High or Low of wire Open part(open).
4. Faulty PFIS.
Qualificati-
• More than 1 sec 5. Faulty SRSCM.
Diagnostic on
Time De-Qualifi-
• More than 2 sec
cation
TF1317111333DD

1. Ignition "OFF", connect scantool.

2. Ignition "ON"& Engine "OFF", select "Diagnostic
Trouble Codes(DTC)" mode.
3. Monitor diagnostic trouble code and present of
trouble code.
4. Using a scan tool, clear the DTC.

STDRT0504N

5. Is DTC present problem ?

▶ Go to "W/Harness Inspection" procedure.
▶ Displaying nothing(no DTC) or DTC with la- ▶ Substitute a known-good PFIS, and check f-
bel "H"(historical) shows that Fault is intermitte- or proper operation.
nt caused by poor contact in the part's and/or If the problem is corrected, replace PFIS and t-
SRSCM connector or was repaired and SRSC- hen go to "Verification of Vehicle Repair" proc-
M memory was not cleared. edure.
Thoroughly check connectors for looseness, p-
oor connection, bending, corrosion, contamin-
ation, deterioration, or damage. After a repair, it is essential to verify that the fault has
▶ Repair or replace as necessary and then go been corrected.
to "Verification of Vehicle Repair" procedure. 1. Connect scan tool and select "Diagnostic Trouble
Codes(DTC)" mode
2. Using a scan tool, clear the DTC.
1. Many malfunctions in the electrical system are
caused by poor harness and terminals. 3. Operate the vehicle within DTC Enable conditions in
General information.
Faults can also be caused by interference from other
electrical systems, and mechanical or chemical 4. Are any DTC present ?
damage. ▶ Go to the applicable troubleshooting proce-
2. Thoroughly check connectors for looseness, poor dure.
connection, bending, corrosion, contamination, ▶ System is performing to specification at this
deterioration, or damage. time.
3. Has a problem been found?
▶ Repair as necessary and then go to "Verific-
ation of Vehicle Repair" procedure.
▶ Go to "Component Inspection" procedure.

1. Ignition "ON" & Engine "OFF" and Using a scan tool,

Driver Air bag module (hereinafter referred to DAB)

located at center of steering wheel protects driver by
reducing impact of collision.
DAB is consist of air bag, pat cover and two inflator.
There are power,circuit for ignition, gas generator and
diffuser screen in inflator.
Air bag reduces impact of collision by fillied up gas.
In collision, pat cover splits and through this crack, air
bag emerges and deploys.
Inflator generates gas that expands air bag.
Clock spring is located between steering wheel and
column. It connects SRSCM to DAB.

The SRSCM sets DTC B1346 if the measured resistance

value of DAB circuit is more than the threshold value.
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while.
DTC Strategy • Check Resistance
1. Poor connection of connected
Enable Conditions • Ignition "ON"
part.
Threshold Value • DAB 1st stage Squib resistance ≥ 6.7Ω 2. Poor connection between sho-
rting bar and release pin.
Qualificati-
• More than 2 sec 3. Faulty DAB.
Diagnostic on
4. Faulty Clock spring.
Time De-Qualifi- 5. Faulty SRSCM.
• More than 4 sec
cation

Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1217111346DD

the Scantool.
1. Ignition "OFF", connect scantool. 1.1Ω＜ Resistance of driver airbag(1st
2. Ignition "ON"& Engine "OFF", select "Current Data" stage) ＜ 6.7Ω
mode.
In a case of an open in the driver airbag(1st
3. Monitor the "Driver airbag resistance" parameter on stage) circuit : FAIL
In a case of a short to battery in the driver
airbag(1st stage) circuit: FAIL
In a case of a short to ground in the driver
airbag(1st stage) circuit : FAIL

TF121711134621S

Fig.1) Normal Data damage.

4. Is parameter displayed within specifications? 3. Has a problem been found?
▶ Displaying nothing(no DTC) or DTC with la- ▶ Repair as necessary and then go to "Verific-
bel "H"(historical) shows that Fault is intermitte- ation of Vehicle Repair" procedure.
nt caused by poor contact in the part's and/or ▶ Go to "Squib Circuit Inspection" procedure.
SRSCM connector or was repaired and SRSC-
M memory was not cleared.
Thoroughly check shorting bar/shorting bar rel- 1. Ignition "OFF".
ease pin and connectors for looseness, poor
2. Disconnect (-) terminal cable from battery and wait
connection, bending, corrosion, contamination
for 1 minutes or more.
, deterioration, or damage.
▶ Repair or replace as necessary and then go 3. Remove the DAB module and connect the dummy
to "Verification of Vehicle Repair" procedure. and dummy adapter to DAB connector of the clock
spring harness connector.
▶ Go to "W/Harness Inspection" procedure.

1. Many malfunctions in the electrical system are

caused by poor harness and terminals.
Faults can also be caused by interference from other
electrical systems, and mechanical or chemical
damage. 4. Connect (-) terminal cable to battery and Ignition
2. Thoroughly check shorting bar/shorting bar release "ON" & Engine "OFF" and wait for 30 seconds or
pin and connectors for looseness, poor connection, more.
bending, corrosion, contamination, deterioration, or
5. Connect scantool to Data Link Connector(DLC) and
clear DTC with scantool and diagnose again.

TF121711134631

6. Is DTC present problem ? "High.1" of the Clock Spring harness connector.

▶ Go to "Clock Spring Circuit Inspection" pro- approx. 1 Ω below
cedure.
▶ Substitute a known-good DAB assembly, a-
nd check for proper operation.
If the problem is corrected, replace DAB and t-
hen go to "Verification of Vehicle Repair" proc-
edure.

1. Ignition "OFF" .
2. Disconnect the battery (-) terminal cable from the
battery and wait at least one minutes.
3. Remove DAB module and disconnect SRSCM
connector of the clock spring harness.

4. Measure resistance between terminal "Low.1" and

TF121711134632

5. Is the measured resistance within specifications? approx. 1 Ω below

▶ Go to "Main harness circuit inspection" pro-
cedure.
▶ Substitute the Clock spring and check for p-
roper operation.
If the problem is corrected, replace Clock spri-
ng and then go to "Verification of Vehicle Rep-
air" procedure.

1. Ignition "OFF".
2. Disconnect the battery (-) terminal cable from the
battery and wait at least one minutes.
3. Remove DAB module and disconnect SRSCM
connector of the clock spring harness.

4. Measure resistance between terminal "Low.1" and

"High.1" of the DAB harness connector.
TF121711134633

5. Is the measured resistance within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

Driver Air bag module (hereinafter referred to DAB)

The SRSCM sets DTC B1347 if the measured resistance

value of DAB circuit is less than the threshold value.
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while.
DTC Strategy • Check Resistance
1. Poor connection of connected
Enable Conditions • Ignition "ON"
part.
Threshold Value • DAB 1st stage Squib resistance ≤ 1.1Ω 2. Poor connection between sho-
rting bar and release pin.
Qualificati-
• More than 2 sec 3. Faulty DAB.
Diagnostic on
4. Faulty Clock spring.
Time De-Qualifi- 5. Faulty SRSCM.
• More than 4 sec
cation

Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1217111346DD

TF121711134621S

Fig.1) Normal Data damage.

1. Many malfunctions in the electrical system are

caused by poor harness and terminals.
Faults can also be caused by interference from other
electrical systems, and mechanical or chemical
damage.
2. Thoroughly check shorting bar/shorting bar release 4. Connect (-) terminal cable to battery and Ignition
pin and connectors for looseness, poor connection, "ON" & Engine "OFF" and wait for 30 seconds or
bending, corrosion, contamination, deterioration, or more.
5. Connect scantool to Data Link Connector(DLC) and
clear DTC with scantool and diagnose again.

TF121711134631

6. Is DTC present problem ? "High.1" of the Clock Spring harness connector.

1. Ignition "OFF" .
2. Disconnect the battery (-) terminal cable from the
battery and wait at least one minutes.
3. Remove DAB module and disconnect SRSCM
connector of the clock spring harness.

4. Measure resistance between terminal "Low.1" and

TF121711134632

5. Is the measured resistance within specifications? approx. 1 Ω below

1. Ignition "OFF".
2. Disconnect the battery (-) terminal cable from the
battery and wait at least one minutes.
3. Remove DAB module and disconnect SRSCM
connector of the clock spring harness.

4. Measure resistance between terminal "Low.1" and

"High.1" of the DAB harness connector.
TF121711134633

5. Is the measured resistance within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

Driver Air bag module (hereinafter referred to DAB)

The SRSCM sets DTC B1348 if there is a short to ground

in DAB harness
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while
DTC Strategy • Check Voltage
1. Short to ground in DAB harne-
Enable Conditions • Ignition "ON"
ss.
Threshold Value • Short to ground in DAB 2. Poor connection of connected
part.
Qualificati-
• More than 2 sec 3. Faulty DAB.
Diagnostic on
4. Faulty Clock spring.
Time De-Qualifi- 5. Faulty SRSCM.
• More than 4 sec
cation

Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1217111346DD

TF121711134621S

Fig.1) Normal Data damage.

1. Many malfunctions in the electrical system are

TF121711134631

6. Is DTC present problem ? "High.1" of the clock spring harness connector and
▶ Go to "Clock Spring Circuit Inspection" pro- chassis ground.
cedure. ∞
▶ Substitute a known-good DAB assembly, a-
nd check for proper operation.
If the problem is corrected, replace DAB and t-
hen go to "Verification of Vehicle Repair" proc-
edure.

1. Ignition "OFF" .
2. Disconnect the battery (-) terminal cable from the
battery and wait at least one minutes.
3. Remove DAB module and disconnect SRSCM
connector of the clock spring harness.

4. Measure resistance between terminal "Low.1" or

TF121711134832

5. Is the measured resistance within specifications? ∞

1. Ignition "OFF".
2. Disconnect the battery (-) terminal cable from the
battery and wait at least one minutes.
3. Remove DAB module and disconnect SRSCM
connector of the clock spring harness.

4. Measure resistance between terminal "Low.1" or

"High.1" of the DAB harness connector and chassis
ground.
TF121711134833

5. Is the measured resistance within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

Driver Air bag module (hereinafter referred to DAB)

The SRSCM sets DTC B1349 if there is a short to power

in DAB harness
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while.
DTC Strategy • Check Voltage
1. Short to power in DAB harness
Enable Conditions • Ignition "ON"
.
Threshold Value • Short to power in DAB 2. Poor connection of connected
part.
Qualificati-
• More than 2 sec 3. Faulty DAB.
Diagnostic on
4. Faulty Clock spring.
Time De-Qualifi- 5. Faulty SRSCM.
• More than 4 sec
cation

Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1217111346DD

TF121711134621S

Fig.1) Normal Data damage.

1. Many malfunctions in the electrical system are

TF121711134631

6. Is DTC present problem ? and Ignition "ON" & Engine "OFF".

▶ Go to "Clock Spring Circuit Inspection" pro- 5. Measure Voltage between terminal "Low.1" or
cedure. "High.1" of the clock spring harness connector and
chassis ground.
▶ Substitute a known-good DAB assembly, a-
nd check for proper operation. 0V
If the problem is corrected, replace DAB and t-
hen go to "Verification of Vehicle Repair" proc-
edure.

1. Ignition "OFF" .
2. Disconnect the battery (-) terminal cable from the
battery and wait at least one minutes.
3. Remove DAB module and disconnect SRSCM
connector of the clock spring harness.

4. Connect the battery (-) terminal cable to the battery

TF121711134932

6. Is the measured resistance within specifications? 5. Measure voltage between terminal "Low.1" or
▶ Go to "Main harness circuit inspection" pro- "High.1" of the DAB harness connector and chassis
ground.
cedure.
approx. 0V
▶ Substitute the Clock spring and check for p-
roper operation.
If the problem is corrected, replace Clock spri-
ng and then go to "Verification of Vehicle Rep-
air" procedure.

1. Ignition "OFF" and wait at least one minutes.

2. Disconnect the battery (-) terminal cable from the
battery and wait at least one minutes.
3. Remove DAB module and disconnect SRSCM
connector of the main harness.
4. Connect the battery (-) terminal cable to the battery
and Ignition "ON" & Engine "OFF" and wait for 30
seconds or more.
TF121711134933

6. Is the measured voltage within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

Passenger Air bag module (hereinafter referred to PAB)

located at passenger side crush pad protects
passenger by reducing impact of collision.
PAB is consist of air bag, pat cover and inflator.
Air bag reduces impact of collision by fillied up gas.
Inflator keeps gas and uses it to deploy air bag on
collision.

The SRSCM sets DTC B1352 if the measured resistance

value of PAB circuit is more than the threshold value.
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while

DTC Strategy • Check Resistance

Enable Conditions • Ignition "ON" 1. Poor connection of connected
part.
Threshold Value • PAB 1st stage Squib resistance ≥ 6.7Ω
2. Poor connection between sho-
Qualificati- rting bar and release pin.
• More than 2 sec
Diagnostic on 3. Faulty PAB.
Time 4. Faulty SRSCM.
De-Qualifi-
• More than 4 sec
cation
Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1217111352DD

1. Ignition "OFF", connect scantool.

2. Ignition "ON"& Engine "OFF", select "Current Data"
mode.
3. Monitor the "Passenger airbag resistance" parameter
on the Scantool.
1.1Ω＜ Resistance of Passenger
airbag(1st stage) ＜ 6.7Ω
In a case of an open in the Passenger
airbag(1st stage) circuit : FAIL
In a case of a short to battery in the
Passenger airbag(1st stage) circuit: FAIL
In a case of a short to ground in the
Passenger airbag(1st stage) circuit : FAIL
TF121711135221S

Fig.1) Normal Data ▶ Repair as necessary and then go to "Verific-

1. Many malfunctions in the electrical system are

caused by poor harness and terminals.
Faults can also be caused by interference from other 4. Connect (-) terminal cable to battery and Ignition
electrical systems, and mechanical or chemical "ON" & Engine "OFF" and wait for 30 seconds or
damage. more.
2. Thoroughly check shorting bar/shorting bar release 5. Connect scantool to Data Link Connector(DLC) and
pin and connectors for looseness, poor connection, clear DTC with scantool and diagnose again.
bending, corrosion, contamination, deterioration, or
damage.
3. Has a problem been found?
TF121711135231

6. Is DTC present problem ? approx. 1 Ω below

▶ Go to "Main harness circuit inspection" pro-
cedure.
▶ Substitute a known-good PAB assembly, a-
nd check for proper operation.
If the problem is corrected, replace PAB and t-
hen go to "Verification of Vehicle Repair" proc-
edure.

1. Ignition "OFF".
2. Disconnect the battery (-) terminal cable from the
battery and wait at least one minutes.
3. Disconnect PAB connector and SRSCM main
harness connector.

4. Measure resistance between terminal "Low.1" and

"High.1" of the PAB harness connector.
TF121711135232

5. Is the measured resistance within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

Passenger Air bag module (hereinafter referred to PAB)

The SRSCM sets DTC B1353 if the measured resistance

value of PAB circuit is less than the threshold value.
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while.

DTC Strategy • Check Resistance

Enable Conditions • Ignition "ON" 1. Poor connection of connected
part.
Threshold Value • PAB 1st stage Squib resistance ≤ 1.1Ω
2. Poor connection between sho-
Qualificati- rting bar and release pin.
• More than 2 sec
Diagnostic on 3. Faulty PAB.
Time 4. Faulty SRSCM.
De-Qualifi-
• More than 4 sec
cation
Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1217111352DD

1. Ignition "OFF", connect scantool.

Fig.1) Normal Data ▶ Repair as necessary and then go to "Verific-

1. Many malfunctions in the electrical system are

6. Is DTC present problem ? approx. 1 Ω below

1. Ignition "OFF".
2. Disconnect the battery (-) terminal cable from the
battery and wait at least one minutes.
3. Disconnect PAB connector and SRSCM main
harness connector.

4. Measure resistance between terminal "Low.1" and

"High.1" of the PAB harness connector.
TF121711135232

5. Is the measured resistance within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

Passenger Air bag module (hereinafter referred to PAB)

The SRSCM sets DTC B1354 if there is a short to ground

in PAB harness
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while.

DTC Strategy • Check Voltage

Enable Conditions • Ignition "ON" 1. Short to ground in PAB harnes-
s.
Threshold Value • Short to ground in PAB
2. Poor connection of connected
Qualificati- part.
• More than 2 sec
Diagnostic on 3. Faulty PAB.
Time 4. Faulty SRSCM.
De-Qualifi-
• More than 4 sec
cation
Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1217111352DD

1. Ignition "OFF", connect scantool.

Fig.1) Normal Data ▶ Repair as necessary and then go to "Verific-

1. Many malfunctions in the electrical system are

caused by poor harness and terminals. 4. Connect (-) terminal cable to battery and Ignition
Faults can also be caused by interference from other "ON" & Engine "OFF" and wait for 30 seconds or
electrical systems, and mechanical or chemical more.
damage. 5. Connect scantool to Data Link Connector(DLC) and
2. Thoroughly check shorting bar/shorting bar release clear DTC with scantool and diagnose again.
pin and connectors for looseness, poor connection,
bending, corrosion, contamination, deterioration, or
damage.
3. Has a problem been found?
TF121711135231

6. Is DTC present problem ? ∞

1. Ignition "OFF".
2. Disconnect the battery (-) terminal cable from the
battery and wait at least one minutes.
3. Disconnect PAB connector and SRSCM main
harness connector.

4. Measure resistance between terminal "Low.1" or

"High.1" of the PAB harness connector and chassis
ground.
TF121711135432

5. Is the measured resistance within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

Passenger Air bag module (hereinafter referred to PAB)

The SRSCM sets DTC B1355 if there is a short to power

in PAB harness.
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while.

DTC Strategy • Check Voltage

Enable Conditions • Ignition "ON" 1. Short to power in PAB harness
.
Threshold Value • Short to power in PAB
2. Poor connection of connected
Qualificati- part.
• More than 2 sec
Diagnostic on 3. Faulty PAB.
Time 4. Faulty SRSCM.
De-Qualifi-
• More than 4 sec
cation
Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1217111352DD

1. Ignition "OFF", connect scantool.

Fig.1) Normal Data ▶ Repair as necessary and then go to "Verific-

1. Many malfunctions in the electrical system are

6. Is DTC present problem ? 5. Measure voltage between terminal "Low.1" or

▶ Go to "Main harness circuit inspection" pro- "High.1" of the PAB harness connector and chassis
ground.
cedure.
approx. 0V
▶ Substitute a known-good PAB assembly, a-
nd check for proper operation.
If the problem is corrected, replace PAB and t-
hen go to "Verification of Vehicle Repair" proc-
edure.

1. Ignition "OFF".
2. Disconnect the battery (-) terminal cable from the
battery and wait at least one minutes.
3. Disconnect PAB connector and SRSCM main
harness connector.

4. Connect the battery (-) terminal cable to the battery

and Ignition "ON" & Engine "OFF" and wait for 30
seconds or more.
TF121711135532

6. Is the measured voltage within specifications? ▶ Go to the applicable troubleshooting proce-

▶ Substitute a known-good SRSCM, and che- dure.
ck for proper operation. ▶ System is performing to specification at this
If the problem is corrected, replace SRSCM a- time.
nd then go to "Verification of Vehicle Repair" p-
rocedure.
▶ Substitute the SRSCM main harness and ch-
eck for proper operation.
If the problem is corrected, replace SRSCM
main harness and then go to "Verification of V-
ehicle Repair" procedure.

After a repair, it is essential to verify that the fault has

Seat Belt Pretensioner(hereinafter referred to BPT) is

located at both side of center pillar.
BPT tightens seat belt before air bag deploys to protect
passenger from bumping against crush pad, steering
wheel and front window.
In BPT, there are a ignition circuit and cylinder for
rewinding belt.
Cylinder has piston that can rewind seat belt in it.
Gas chamber generates expansive force of gases to
push piston in cylinder.

The SRSCM sets DTC B1361 if the measured resistance

value of DBPT circuit is more than the threshold value.
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while.
DTC Strategy • Check Resistance
Enable Conditions • Ignition "ON" 1. Poor connection of connected
part.
Threshold Value • DBPT resistance ≥ 6.7Ω
2. Poor connection between sho-
Qualificati- rting bar and release pin.
• More than 2 sec
Diagnostic on 3. Faulty DBPT.
Time 4. Faulty SRSCM.
De-Qualifi-
• More than 4 sec
cation

Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1317111361DD

parameter on the Scantool.

1. Ignition "OFF", connect scantool. 1.1Ω＜ Resistance of Pretensioner
2. Ignition "ON"& Engine "OFF", select "Current Data" front-Driver ＜ 6.7Ω
mode.
In a case of an open in the Pretensioner
3. Monitor the "Pretensioner front-Driver resistance" front-Driver circuit : FAIL
In a case of a short to battery in the
Pretensioner front-Driver circuit: FAIL
In a case of a short to ground in the
Pretensioner front-Driver circuit : FAIL

TF121711136121S

Fig.1) Normal Data damage.

4. Is parameter displayed within specifications? 3. Has a problem been found?
▶ Displaying nothing(no DTC) or DTC with la- ▶ Repair as necessary and then go to "Verific-
bel "H"(historical) shows that Fault is intermitte- ation of Vehicle Repair" procedure.
nt caused by poor contact in the part's and/or ▶ Go to "Squib Circuit Inspection" procedure.
SRSCM connector or was repaired and SRSC-
M memory was not cleared.
Thoroughly check shorting bar/shorting bar rel- 1. Ignition "OFF".
ease pin and connectors for looseness, poor
2. Disconnect (-) terminal cable from battery and wait
connection, bending, corrosion, contamination
for 1 minutes or more.
, deterioration, or damage.
▶ Repair or replace as necessary and then go 3. Disconnect DBPT module and connect the dummy
to "Verification of Vehicle Repair" procedure. and dummy adapter to main harness connector.

▶ Go to "W/Harness Inspection" procedure.

1. Many malfunctions in the electrical system are 4. Connect (-) terminal cable to battery and Ignition
caused by poor harness and terminals. "ON" & Engine "OFF" and wait for 30 seconds or
Faults can also be caused by interference from other more.
electrical systems, and mechanical or chemical 5. Connect scantool to Data Link Connector(DLC) and
damage. clear DTC with scantool and diagnose again.
2. Thoroughly check shorting bar/shorting bar release
pin and connectors for looseness, poor connection,
bending, corrosion, contamination, deterioration, or
TF121711136131

6. Is DTC present problem ?

▶ Go to "Main harness circuit inspection" pro-
cedure.
▶ Substitute a known-good DBPT assembly,
and check for proper operation.
If the problem is corrected, replace DBPT and
then go to "Verification of Vehicle Repair" proc-
edure.

1. Ignition "OFF".
2. Disconnect the battery (-) terminal cable from the
battery and wait at least one minutes.
3. Disconnect DBPT connector and SRSCM main
harness connector.
4. Measure resistance between terminal "Low" and
"High" of the DBPT harness connector.
approx. 1 Ω below
TF121711136132

5. Is the measured resistance within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

Seat Belt Pretensioner(hereinafter referred to BPT) is

The SRSCM sets DTC B1362 if the measured resistance

value of DBPT circuit is less than the threshold value.
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while.
DTC Strategy • Check Resistance
Enable Conditions • Ignition "ON" 1. Poor connection of connected
part.
Threshold Value • DBPT resistance ≤ 1.1Ω
2. Poor connection between sho-
Qualificati- rting bar and release pin.
• More than 2 sec
Diagnostic on 3. Faulty DBPT.
Time 4. Faulty SRSCM.
De-Qualifi-
• More than 4 sec
cation

Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1317111361DD

parameter on the Scantool.

TF121711136121S

Fig.1) Normal Data damage.

4. Is parameter displayed within specifications? 3. Has a problem been found?
▶ Displaying nothing(no DTC) or DTC with la- ▶ Repair as necessary and then go to "Verific-
bel "H"(historical) shows that Fault is intermitte- ation of Vehicle Repair" procedure.
nt caused by poor contact in the part's and/or ▶ Go to "Squib Circuit Inspection" procedure.
SRSCM connector or was repaired and SRSC-
M memory was not cleared.
Thoroughly check shorting bar/shorting bar rel- 1. Ignition "OFF".
ease pin and connectors for looseness, poor
2. Disconnect (-) terminal cable from battery and wait
connection, bending, corrosion, contamination
for 1 minutes or more.
, deterioration, or damage.
▶ Repair or replace as necessary and then go 3. Disconnect DBPT module and connect the dummy
to "Verification of Vehicle Repair" procedure. and dummy adapter to main harness connector.

▶ Go to "W/Harness Inspection" procedure.

6. Is DTC present problem ?

5. Is the measured resistance within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

Seat Belt Pretensioner(hereinafter referred to BPT) is

The SRSCM sets DTC B1363 if there is a short to ground

in DBPT harness.
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while.
DTC Strategy • Check Voltage
Enable Conditions • Ignition "ON" 1. Short to ground in DBPT harn-
ess.
Threshold Value • Short to ground in DBPT
2. Poor connection of connected
Qualificati- part.
• More than 2 sec
Diagnostic on 3. Faulty DBPT.
Time 4. Faulty SRSCM.
De-Qualifi-
• More than 4 sec
cation

Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1317111361DD

parameter on the Scantool.

TF121711136121S

Fig.1) Normal Data damage.

4. Is parameter displayed within specifications? 3. Has a problem been found?
▶ Displaying nothing(no DTC) or DTC with la- ▶ Repair as necessary and then go to "Verific-
bel "H"(historical) shows that Fault is intermitte- ation of Vehicle Repair" procedure.
nt caused by poor contact in the part's and/or ▶ Go to "Squib Circuit Inspection" procedure.
SRSCM connector or was repaired and SRSC-
M memory was not cleared.
Thoroughly check shorting bar/shorting bar rel- 1. Ignition "OFF".
ease pin and connectors for looseness, poor
2. Disconnect (-) terminal cable from battery and wait
connection, bending, corrosion, contamination
for 1 minutes or more.
, deterioration, or damage.
▶ Repair or replace as necessary and then go 3. Disconnect DBPT module and connect the dummy
to "Verification of Vehicle Repair" procedure. and dummy adapter to main harness connector.

▶ Go to "W/Harness Inspection" procedure.

6. Is DTC present problem ?

1. Ignition "OFF".
2. Disconnect the battery (-) terminal cable from the
battery and wait at least one minutes.
3. Disconnect DBPT connector and SRSCM main
harness connector.
4. Measure resistance between terminal "Low" or "High"
of the DBPT harness connector and chassis ground.

∞
TF121711136332

5. Is the measured resistance within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

Seat Belt Pretensioner(hereinafter referred to BPT) is

The SRSCM sets DTC B1364 if there is a short to power

in DBPT harness.
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while.
DTC Strategy • Check Voltage
Enable Conditions • Ignition "ON" 1. Short to power in DBPT harne-
ss.
Threshold Value • Short to power in DBPT
2. Poor connection of connected
Qualificati- part.
• More than 2 sec
Diagnostic on 3. Faulty DBPT.
Time 4. Faulty SRSCM.
De-Qualifi-
• More than 4 sec
cation

Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1317111361DD

parameter on the Scantool.

TF121711136121S

Fig.1) Normal Data damage.

4. Is parameter displayed within specifications? 3. Has a problem been found?
▶ Displaying nothing(no DTC) or DTC with la- ▶ Repair as necessary and then go to "Verific-
bel "H"(historical) shows that Fault is intermitte- ation of Vehicle Repair" procedure.
nt caused by poor contact in the part's and/or ▶ Go to "Squib Circuit Inspection" procedure.
SRSCM connector or was repaired and SRSC-
M memory was not cleared.
Thoroughly check shorting bar/shorting bar rel- 1. Ignition "OFF".
ease pin and connectors for looseness, poor
2. Disconnect (-) terminal cable from battery and wait
connection, bending, corrosion, contamination
for 1 minutes or more.
, deterioration, or damage.
▶ Repair or replace as necessary and then go 3. Disconnect DBPT module and connect the dummy
to "Verification of Vehicle Repair" procedure. and dummy adapter to main harness connector.

▶ Go to "W/Harness Inspection" procedure.

6. Is DTC present problem ?

1. Ignition "OFF".
2. Disconnect the battery (-) terminal cable from the
battery and wait at least one minutes.
3. Disconnect DBPT connector and SRSCM main
harness connector.
4. Connect the battery (-) terminal cable to the battery
and Ignition "ON" & Engine "OFF".
5. Measure voltage between terminal "Low" or "High" of
the DBPT harness connector and chassis ground.
approx. 0V
TF121711136432

6. Is the measured voltage within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

Seat Belt Pretensioner(hereinafter referred to BPT) is

The SRSCM sets DTC B1367 if the measured resistance

value of PBPT circuit is more than the threshold value.
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while.
DTC Strategy • Check Resistance
Enable Conditions • Ignition "ON" 1. Poor connection of connected
part.
Threshold Value • PBPT resistance ≥ 6.7Ω
2. Poor connection between sho-
Qualificati- rting bar and release pin.
• More than 2 sec
Diagnostic on 3. Faulty PBPT.
Time 4. Faulty SRSCM.
De-Qualifi-
• More than 4 sec
cation

Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1317111367DD

parameter on the Scantool.

1. Ignition "OFF", connect scantool. 1.1Ω＜ Resistance of Pretensioner
2. Ignition "ON"& Engine "OFF", select "Current Data" front-Passenger ＜ 6.7Ω
mode.
In a case of an open in the Pretensioner
3. Monitor the "Pretensioner front-Passenger resistance" front-Passenger circuit : FAIL
In a case of a short to battery in the
Pretensioner front-Passenger circuit: FAIL
In a case of a short to ground in the
Pretensioner front-Passenger circuit : FAIL

TF121711136721S

Fig.1) Normal Data damage.

4. Is parameter displayed within specifications? 3. Has a problem been found?
▶ Displaying nothing(no DTC) or DTC with la- ▶ Repair as necessary and then go to "Verific-
bel "H"(historical) shows that Fault is intermitte- ation of Vehicle Repair" procedure.
nt caused by poor contact in the part's and/or ▶ Go to "Squib Circuit Inspection" procedure.
SRSCM connector or was repaired and SRSC-
M memory was not cleared.
Thoroughly check shorting bar/shorting bar rel- 1. Ignition "OFF".
ease pin and connectors for looseness, poor
2. Disconnect (-) terminal cable from battery and wait
connection, bending, corrosion, contamination
for 1 minutes or more.
, deterioration, or damage.
▶ Repair or replace as necessary and then go 3. Disconnect PBPT module and connect the dummy
to "Verification of Vehicle Repair" procedure. and dummy adapter to main harness connector.

▶ Go to "W/Harness Inspection" procedure.

6. Is DTC present problem ?

▶ Go to "Main harness circuit inspection" pro-
cedure.
▶ Substitute a known-good PBPT assembly, a-
nd check for proper operation.
If the problem is corrected, replace PBPT and
then go to "Verification of Vehicle Repair" proc-
edure.

1. Ignition "OFF".
2. Disconnect the battery (-) terminal cable from the
battery and wait at least one minutes.
3. Disconnect PBPT connector and SRSCM main
harness connector.
4. Measure resistance between terminal "Low" and
"High" of the PBPT harness connector.
approx. 1 Ω below
TF121711136732

5. Is the measured resistance within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

Seat Belt Pretensioner(hereinafter referred to BPT) is

The SRSCM sets DTC B1368 if the measured resistance

value of PBPT circuit is less than the threshold value.
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while.
DTC Strategy • Check Resistance
Enable Conditions • Ignition "ON" 1. Poor connection of connected
part.
Threshold Value • PBPT resistance ≤ 1.1Ω
2. Poor connection between sho-
Qualificati- rting bar and release pin.
• More than 2 sec
Diagnostic on 3. Faulty PBPT.
Time 4. Faulty SRSCM.
De-Qualifi-
• More than 4 sec
cation

Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1317111367DD

parameter on the Scantool.

TF121711136721S

Fig.1) Normal Data damage.

4. Is parameter displayed within specifications? 3. Has a problem been found?
▶ Displaying nothing(no DTC) or DTC with la- ▶ Repair as necessary and then go to "Verific-
bel "H"(historical) shows that Fault is intermitte- ation of Vehicle Repair" procedure.
nt caused by poor contact in the part's and/or ▶ Go to "Squib Circuit Inspection" procedure.
SRSCM connector or was repaired and SRSC-
M memory was not cleared.
Thoroughly check shorting bar/shorting bar rel- 1. Ignition "OFF".
ease pin and connectors for looseness, poor
2. Disconnect (-) terminal cable from battery and wait
connection, bending, corrosion, contamination
for 1 minutes or more.
, deterioration, or damage.
▶ Repair or replace as necessary and then go 3. Disconnect PBPT module and connect the dummy
to "Verification of Vehicle Repair" procedure. and dummy adapter to main harness connector.

▶ Go to "W/Harness Inspection" procedure.

6. Is DTC present problem ?

5. Is the measured resistance within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

Seat Belt Pretensioner(hereinafter referred to BPT) is

The SRSCM sets DTC B1369 if there is a short to ground

in PBPT harness.
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while.
DTC Strategy • Check Voltage
Enable Conditions • Ignition "ON" 1. Short to ground in PBPT harne-
ss.
Threshold Value • Short to ground in PBPT
2. Poor connection of connected
Qualificati- part.
• More than 2 sec
Diagnostic on 3. Faulty PBPT.
Time 4. Faulty SRSCM.
De-Qualifi-
• More than 4 sec
cation

Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1317111367DD

parameter on the Scantool.

TF121711136721S

Fig.1) Normal Data damage.

4. Is parameter displayed within specifications? 3. Has a problem been found?
▶ Displaying nothing(no DTC) or DTC with la- ▶ Repair as necessary and then go to "Verific-
bel "H"(historical) shows that Fault is intermitte- ation of Vehicle Repair" procedure.
nt caused by poor contact in the part's and/or ▶ Go to "Squib Circuit Inspection" procedure.
SRSCM connector or was repaired and SRSC-
M memory was not cleared.
Thoroughly check shorting bar/shorting bar rel- 1. Ignition "OFF".
ease pin and connectors for looseness, poor
2. Disconnect (-) terminal cable from battery and wait
connection, bending, corrosion, contamination
for 1 minutes or more.
, deterioration, or damage.
▶ Repair or replace as necessary and then go 3. Disconnect PBPT module and connect the dummy
to "Verification of Vehicle Repair" procedure. and dummy adapter to main harness connector.

▶ Go to "W/Harness Inspection" procedure.

6. Is DTC present problem ?

1. Ignition "OFF".
2. Disconnect the battery (-) terminal cable from the
battery and wait at least one minutes.
3. Disconnect PBPT connector and SRSCM main
harness connector.
4. Measure resistance between terminal "Low" or "High"
of the PBPT harness connector and chassis ground.

∞
TF121711136932

5. Is the measured resistance within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

Seat Belt Pretensioner(hereinafter referred to BPT) is

The SRSCM sets DTC B1370 if there is a short to power

in PBPT harness.
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while.
DTC Strategy • Check Voltage
Enable Conditions • Ignition "ON" 1. Short to power in PBPT harne-
ss.
Threshold Value • Short to power in PBPT
2. Poor connection of connected
Qualificati- part.
• More than 2 sec
Diagnostic on 3. Faulty PBPT.
Time 4. Faulty SRSCM.
De-Qualifi-
• More than 4 sec
cation

Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1317111367DD

parameter on the Scantool.

TF121711136721S

Fig.1) Normal Data damage.

4. Is parameter displayed within specifications? 3. Has a problem been found?
▶ Displaying nothing(no DTC) or DTC with la- ▶ Repair as necessary and then go to "Verific-
bel "H"(historical) shows that Fault is intermitte- ation of Vehicle Repair" procedure.
nt caused by poor contact in the part's and/or ▶ Go to "Squib Circuit Inspection" procedure.
SRSCM connector or was repaired and SRSC-
M memory was not cleared.
Thoroughly check shorting bar/shorting bar rel- 1. Ignition "OFF".
ease pin and connectors for looseness, poor
2. Disconnect (-) terminal cable from battery and wait
connection, bending, corrosion, contamination
for 1 minutes or more.
, deterioration, or damage.
▶ Repair or replace as necessary and then go 3. Disconnect PBPT module and connect the dummy
to "Verification of Vehicle Repair" procedure. and dummy adapter to main harness connector.

▶ Go to "W/Harness Inspection" procedure.

6. Is DTC present problem ?

1. Ignition "OFF".
2. Disconnect the battery (-) terminal cable from the
battery and wait at least one minutes.
3. Disconnect PBPT connector and SRSCM main
harness connector.
4. Connect the battery (-) terminal cable to the battery
and Ignition "ON" & Engine "OFF".
5. Measure voltage between terminal "Low" or "High" of
the PBPT harness connector and chassis ground.
approx. 0V
TF121711137032

6. Is the measured voltage within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

Side Airbag (hereinafter referred to SAB) located in

driver and passenger seat protects passenger's head
and shoulder. SAB is consist of air bag and inflator.
Air bag reduces impact of collision by fillied up gas.
Inflator keeps gas and uses it to deploy air bag on
collision.

The SRSCM sets DTC B1378 if the measured resistance

value of DSAB circuit is more than the threshold value.
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while.

DTC Strategy • Check Resistance

Enable Conditions • Ignition "ON" 1. Poor connection of connected
part.
Threshold Value • DSAB resistance ≥ 6.7Ω
2. Poor connection between sho-
Qualificati- rting bar and release pin.
• More than 2 sec
Diagnostic on 3. Faulty DSAB.
Time 4. Faulty SRSCM.
De-Qualifi-
• More than 4 sec
cation
Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1317111378DD

1. Ignition "OFF", connect scantool.

2. Ignition "ON"& Engine "OFF", select "Current Data"
mode.
3. Monitor the "Side airbag front-Driver resistance"
parameter on the Scantool.
1.1Ω＜ Resistance of Side airbag
front-Driver ＜ 6.7Ω
In a case of an open in the Side airbag
front-Driver circuit : FAIL
In a case of a short to battery in the Side
airbag front-Driver circuit: FAIL
In a case of a short to ground in the Side
airbag front-Driver circuit : FAIL
TF121711137821S

Fig.1) Normal Data ▶ Repair as necessary and then go to "Verific-

4. Is parameter displayed within specifications? ation of Vehicle Repair" procedure.
▶ Displaying nothing(no DTC) or DTC with la- ▶ Go to "Squib Circuit Inspection" procedure.
bel "H"(historical) shows that Fault is intermitte-
nt caused by poor contact in the part's and/or
SRSCM connector or was repaired and SRSC- 1. Ignition "OFF".
M memory was not cleared. 2. Disconnect (-) terminal cable from battery and wait
Thoroughly check shorting bar/shorting bar rel- for 1 minutes or more.
ease pin and connectors for looseness, poor 3. Disconnect DSAB module and connect the dummy
connection, bending, corrosion, contamination and dummy adapter to main harness connector.
, deterioration, or damage.
▶ Repair or replace as necessary and then go
to "Verification of Vehicle Repair" procedure.
▶ Go to "W/Harness Inspection" procedure.
4. Connect (-) terminal cable to battery and Ignition
"ON" & Engine "OFF" and wait for 30 seconds or
1. Many malfunctions in the electrical system are more.
caused by poor harness and terminals. 5. Connect scantool to Data Link Connector(DLC) and
Faults can also be caused by interference from other clear DTC with scantool and diagnose again.
electrical systems, and mechanical or chemical
damage.
2. Thoroughly check shorting bar/shorting bar release
pin and connectors for looseness, poor connection,
bending, corrosion, contamination, deterioration, or
damage.
3. Has a problem been found?
TF121711137831

6. Is DTC present problem ?

▶ Go to "Main harness circuit inspection" pro-
cedure.
▶ Substitute a known-good DSAB assembly,
and check for proper operation.
If the problem is corrected, replace DSAB and
then go to "Verification of Vehicle Repair" proc-
edure.

1. Ignition "OFF".
2. Disconnect the battery (-) terminal cable from the
battery and wait at least one minutes.
3. Disconnect DSAB connector and SRSCM main
harness connector.
4. Measure resistance between terminal "Low" and
"High" of the DSAB harness connector.
approx. 1 Ω below
TF121711137832

5. Is the measured resistance within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

Side Airbag (hereinafter referred to SAB) located in

The SRSCM sets DTC B1379 if the measured resistance

value of DSAB circuit is less than the threshold value.
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while.

DTC Strategy • Check Resistance

Enable Conditions • Ignition "ON" 1. Poor connection of connected
part.
Threshold Value • DSAB resistance ≤ 1.1Ω
2. Poor connection between sho-
Qualificati- rting bar and release pin.
• More than 2 sec
Diagnostic on 3. Faulty DSAB.
Time 4. Faulty SRSCM.
De-Qualifi-
• More than 4 sec
cation
Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1317111378DD

1. Ignition "OFF", connect scantool.

Fig.1) Normal Data ▶ Repair as necessary and then go to "Verific-

6. Is DTC present problem ?

5. Is the measured resistance within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

Side Airbag (hereinafter referred to SAB) located in

The SRSCM sets DTC B1380 if there is a short to ground

in DSAB harness.
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while.

DTC Strategy • Check Voltage

Enable Conditions • Ignition "ON" 1. Short to ground in DSAB harn-
ess.
Threshold Value • Short to ground in DSAB
2. Poor connection of connected
Qualificati- part.
• More than 2 sec
Diagnostic on 3. Faulty DSAB.
Time 4. Faulty SRSCM.
De-Qualifi-
• More than 4 sec
cation
Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1317111378DD

1. Ignition "OFF", connect scantool.

Fig.1) Normal Data ▶ Repair as necessary and then go to "Verific-

6. Is DTC present problem ?

1. Ignition "OFF".
2. Disconnect the battery (-) terminal cable from the
battery and wait at least one minutes.
3. Disconnect DSAB connector and SRSCM main
harness connector.
4. Measure resistance between terminal "Low" or "High"
of the DSAB harness connector and chassis ground.

∞
TF121711138032

5. Is the measured resistance within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

Side Airbag (hereinafter referred to SAB) located in

The SRSCM sets DTC B1381 if there is a short to power

in DSAB harness.
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while.

DTC Strategy • Check Voltage

Enable Conditions • Ignition "ON" 1. Short to power in DSAB harne-
ss.
Threshold Value • Short to power in DSAB
2. Poor connection of connected
Qualificati- part.
• More than 2 sec
Diagnostic on 3. Faulty DSAB.
Time 4. Faulty SRSCM.
De-Qualifi-
• More than 4 sec
cation
Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1317111378DD

1. Ignition "OFF", connect scantool.

Fig.1) Normal Data ▶ Repair as necessary and then go to "Verific-

6. Is DTC present problem ?

1. Ignition "OFF".
2. Disconnect the battery (-) terminal cable from the
battery and wait at least one minutes.
3. Disconnect DSAB connector and SRSCM main
harness connector.
4. Connect the battery (-) terminal cable to the battery
and Ignition "ON" & Engine "OFF".
5. Measure voltage between terminal "Low" or "High" of
the DSAB harness connector and chassis ground.
approx. 0V
TF121711138132

6. Is the measured voltage within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

Side Airbag (hereinafter referred to SAB) located in

The SRSCM sets DTC B1382 if the measured resistance

value of PSAB circuit is more than the threshold value.
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while.

DTC Strategy • Check Resistance

Enable Conditions • Ignition "ON" 1. Poor connection of connected
part.
Threshold Value • PSAB resistance ≥ 6.7Ω
2. Poor connection between sho-
Qualificati- rting bar and release pin.
• More than 2 sec
Diagnostic on 3. Faulty PSAB.
Time 4. Faulty SRSCM.
De-Qualifi-
• More than 4 sec
cation
Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1317111382DD

1. Ignition "OFF", connect scantool.

2. Ignition "ON"& Engine "OFF", select "Current Data"
mode.
3. Monitor the "Side airbag front-Passenger resistance"
parameter on the Scantool.
1.1Ω＜ Resistance of Side airbag
front-Passenger ＜ 6.7Ω
In a case of an open in the Side airbag
front-Passenger circuit : FAIL
In a case of a short to battery in the Side
airbag front-Passenger circuit: FAIL
In a case of a short to ground in the Side
airbag front-Passenger circuit : FAIL
TF121711138221S

Fig.1) Normal Data ▶ Repair as necessary and then go to "Verific-

4. Is parameter displayed within specifications? ation of Vehicle Repair" procedure.
▶ Displaying nothing(no DTC) or DTC with la- ▶ Go to "Squib Circuit Inspection" procedure.
bel "H"(historical) shows that Fault is intermitte-
nt caused by poor contact in the part's and/or
SRSCM connector or was repaired and SRSC- 1. Ignition "OFF".
M memory was not cleared. 2. Disconnect (-) terminal cable from battery and wait
Thoroughly check shorting bar/shorting bar rel- for 1 minutes or more.
ease pin and connectors for looseness, poor 3. Disconnect PSAB module and connect the dummy
connection, bending, corrosion, contamination and dummy adapter to main harness connector.
, deterioration, or damage.
▶ Repair or replace as necessary and then go
to "Verification of Vehicle Repair" procedure.
▶ Go to "W/Harness Inspection" procedure.
4. Connect (-) terminal cable to battery and Ignition
"ON" & Engine "OFF" and wait for 30 seconds or
1. Many malfunctions in the electrical system are more.
caused by poor harness and terminals. 5. Connect scantool to Data Link Connector(DLC) and
Faults can also be caused by interference from other clear DTC with scantool and diagnose again.
electrical systems, and mechanical or chemical
damage.
2. Thoroughly check shorting bar/shorting bar release
pin and connectors for looseness, poor connection,
bending, corrosion, contamination, deterioration, or
damage.
3. Has a problem been found?
TF121711138231

6. Is DTC present problem ?

▶ Go to "Main harness circuit inspection" pro-
cedure.
▶ Substitute a known-good PSAB assembly,
and check for proper operation.
If the problem is corrected, replace PSAB and
then go to "Verification of Vehicle Repair" proc-
edure.

1. Ignition "OFF".
2. Disconnect the battery (-) terminal cable from the
battery and wait at least one minutes.
3. Disconnect PSAB connector and SRSCM main
harness connector.
4. Measure resistance between terminal "Low" and
"High" of the PSAB harness connector.
approx. 1 Ω below
TF121711138232

5. Is the measured resistance within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

Side Airbag (hereinafter referred to SAB) located in

The SRSCM sets DTC B1383 if the measured resistance

value of PSAB circuit is less than the threshold value.
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while.

DTC Strategy • Check Resistance

Enable Conditions • Ignition "ON" 1. Poor connection of connected
part.
Threshold Value • PSAB resistance ≤ 1.1Ω
2. Poor connection between sho-
Qualificati- rting bar and release pin.
• More than 2 sec
Diagnostic on 3. Faulty PSAB.
Time 4. Faulty SRSCM.
De-Qualifi-
• More than 4 sec
cation
Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1317111382DD

1. Ignition "OFF", connect scantool.

Fig.1) Normal Data ▶ Repair as necessary and then go to "Verific-

4. Is parameter displayed within specifications? ation of Vehicle Repair" procedure.
▶ Displaying nothing(no DTC) or DTC with la- ▶ Go to "Squib Circuit Inspection" procedure.
bel "H"(historical) shows that Fault is intermitte-
nt caused by poor contact in the part's and/or
SRSCM connector or was repaired and SRSC- 1. Ignition "OFF".
M memory was not cleared. 2. Disconnect (-) terminal cable from battery and wait
Thoroughly check shorting bar/shorting bar rel- for 1 minutes or more.
ease pin and connectors for looseness, poor 3. Disconnect PSAB module and connect the dummy
connection, bending, corrosion, contamination and dummy adapter to main harness connector.
, deterioration, or damage.
▶ Repair or replace as necessary and then go
to "Verification of Vehicle Repair" procedure.
▶ Go to "W/Harness Inspection" procedure.
4. Connect (-) terminal cable to battery and Ignition
"ON" & Engine "OFF" and wait for 30 seconds or
1. Many malfunctions in the electrical system are more.
caused by poor harness and terminals. 5. Connect scantool to Data Link Connector(DLC) and
Faults can also be caused by interference from other clear DTC with scantool and diagnose again.
electrical systems, and mechanical or chemical
damage.
2. Thoroughly check shorting bar/shorting bar release
pin and connectors for looseness, poor connection,
bending, corrosion, contamination, deterioration, or
damage.
3. Has a problem been found?
TF121711138231

6. Is DTC present problem ?

5. Is the measured resistance within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

Side Airbag (hereinafter referred to SAB) located in

The SRSCM sets DTC B1384 if there is a short to ground

in PSAB harness.
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while.

DTC Strategy • Check Voltage

Enable Conditions • Ignition "ON" 1. Short to ground in PSAB harn-
ess.
Threshold Value • Short to ground in PSAB
2. Poor connection of connected
Qualificati- part.
• More than 2 sec
Diagnostic on 3. Faulty PSAB.
Time 4. Faulty SRSCM.
De-Qualifi-
• More than 4 sec
cation
Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1317111382DD

1. Ignition "OFF", connect scantool.

Fig.1) Normal Data ▶ Repair as necessary and then go to "Verific-

4. Is parameter displayed within specifications? ation of Vehicle Repair" procedure.
▶ Displaying nothing(no DTC) or DTC with la- ▶ Go to "Squib Circuit Inspection" procedure.
bel "H"(historical) shows that Fault is intermitte-
nt caused by poor contact in the part's and/or
SRSCM connector or was repaired and SRSC- 1. Ignition "OFF".
M memory was not cleared. 2. Disconnect (-) terminal cable from battery and wait
Thoroughly check shorting bar/shorting bar rel- for 1 minutes or more.
ease pin and connectors for looseness, poor 3. Disconnect PSAB module and connect the dummy
connection, bending, corrosion, contamination and dummy adapter to main harness connector.
, deterioration, or damage.
▶ Repair or replace as necessary and then go
to "Verification of Vehicle Repair" procedure.
▶ Go to "W/Harness Inspection" procedure.
4. Connect (-) terminal cable to battery and Ignition
"ON" & Engine "OFF" and wait for 30 seconds or
1. Many malfunctions in the electrical system are more.
caused by poor harness and terminals. 5. Connect scantool to Data Link Connector(DLC) and
Faults can also be caused by interference from other clear DTC with scantool and diagnose again.
electrical systems, and mechanical or chemical
damage.
2. Thoroughly check shorting bar/shorting bar release
pin and connectors for looseness, poor connection,
bending, corrosion, contamination, deterioration, or
damage.
3. Has a problem been found?
TF121711138231

6. Is DTC present problem ?

1. Ignition "OFF".
2. Disconnect the battery (-) terminal cable from the
battery and wait at least one minutes.
3. Disconnect PSAB connector and SRSCM main
harness connector.
4. Measure resistance between terminal "Low" or "High"
of the PSAB harness connector and chassis ground.

∞
TF121711138432

5. Is the measured resistance within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

Side Airbag (hereinafter referred to SAB) located in

The SRSCM sets DTC B1385 if there is a short to power

in PSAB harness.
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while.

DTC Strategy • Check Voltage

Enable Conditions • Ignition "ON" 1. Short to power in PSAB harne-
ss.
Threshold Value • Short to power in PSAB
2. Poor connection of connected
Qualificati- part.
• More than 2 sec
Diagnostic on 3. Faulty PSAB.
Time 4. Faulty SRSCM.
De-Qualifi-
• More than 4 sec
cation
Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1317111382DD

1. Ignition "OFF", connect scantool.

Fig.1) Normal Data ▶ Repair as necessary and then go to "Verific-

4. Is parameter displayed within specifications? ation of Vehicle Repair" procedure.
▶ Displaying nothing(no DTC) or DTC with la- ▶ Go to "Squib Circuit Inspection" procedure.
bel "H"(historical) shows that Fault is intermitte-
nt caused by poor contact in the part's and/or
SRSCM connector or was repaired and SRSC- 1. Ignition "OFF".
M memory was not cleared. 2. Disconnect (-) terminal cable from battery and wait
Thoroughly check shorting bar/shorting bar rel- for 1 minutes or more.
ease pin and connectors for looseness, poor 3. Disconnect PSAB module and connect the dummy
connection, bending, corrosion, contamination and dummy adapter to main harness connector.
, deterioration, or damage.
▶ Repair or replace as necessary and then go
to "Verification of Vehicle Repair" procedure.
▶ Go to "W/Harness Inspection" procedure.
4. Connect (-) terminal cable to battery and Ignition
"ON" & Engine "OFF" and wait for 30 seconds or
1. Many malfunctions in the electrical system are more.
caused by poor harness and terminals. 5. Connect scantool to Data Link Connector(DLC) and
Faults can also be caused by interference from other clear DTC with scantool and diagnose again.
electrical systems, and mechanical or chemical
damage.
2. Thoroughly check shorting bar/shorting bar release
pin and connectors for looseness, poor connection,
bending, corrosion, contamination, deterioration, or
damage.
3. Has a problem been found?
TF121711138231

6. Is DTC present problem ?

1. Ignition "OFF".
2. Disconnect the battery (-) terminal cable from the
battery and wait at least one minutes.
3. Disconnect PSAB connector and SRSCM main
harness connector.
4. Connect the battery (-) terminal cable to the battery
and Ignition "ON" & Engine "OFF".
5. Measure voltage between terminal "Low" or "High" of
the PSAB harness connector and chassis ground.
approx. 0V
TF121711138532

6. Is the measured voltage within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

Every air bag module has its firing circuit that ignits
powder to deploy air bag according to signal of SRSCM.
SRSCM checks every air bag module when ignition
"ON". Once any fault is detected, it is erased only by
scantool.

The SRSCM sets DTC B1395 if there's any short circuit

in harness of every firing circuit to one another.

DTC Strategy • Check current(PWM type)

Enable Conditions • Ignition "ON"
• Squib lines are cross coupled
Threshold Value • Make other line sink, and one line < 0.6V, then this line
1. Short circuit in squib harness.
is crosscoupled.
2. SRSCM.
Qualificati-
• More than 1 sec
Diagnostic on
Time De-Qualifi-
• More than 2 sec
cation
TF1217111395DD
TF1217111395DD-1

1. Ignition "OFF", connect scantool.

2. Ignition "ON"& Engine "OFF", select "Current Data"
mode.
3. Monitor the "All airbag resistance" parameter on the
Scantool.
1.1Ω＜ Resistance of airbag ＜ 6.7Ω
In a case of an open in the airbag circuit :
FAIL
In a case of a short to battery in the airbag
circuit: FAIL
In a case of a short to ground in the airbag
circuit : FAIL
TF121711139521S

Fig.1) Normal Data ▶ Go to the applicable troubleshooting proce-

4. Is parameter displayed within specifications? dure.
▶ Displaying nothing(no DTC) or DTC with la- ▶ System is performing to specification at this
bel "H"(historical) shows that Fault is intermitte- time.
nt caused by poor contact in the part’s and/or
SRSCM connector or was repaired and SRSC-
M memory was not cleared.
Thoroughly check connectors for looseness, p-
oor connection, bending, corrosion, contamin-
ation, deterioration, or damage.
▶ Repair or replace as necessary and then go
to "Verification of Vehicle Repair" procedure.
▶ Check for short between ignition circuits of
DAB,PAB,BPT,CAB,SAB. If the condition of ha-
rness and component is OK, this fault is caus-
ed by SRSCM internal error so replace a know-
n-good SRSCM and then go to "Verification of
vehicle Repair" procedure.

After a repair, it is essential to verify that the fault has

Side Impact Sensor(SIS) is located in both side of center

pillar detects broad collision.
When SIS delivers collision signal to SRSCM, SRSCM
checks if safing sensor located in SRSCM detects
collusion.
and if both SIS and safing sensor detects collision
simultaneously, SRSCM operates side air bag.

The SRSCM sets DTC B1400 if there is any fault in DSIS

circuit.

DTC Strategy • Check Data

Enable Conditions • Ignition "ON"
• DSIS send defect code
Threshold Value 1. Faulty DSIS circuit.
• DSIS output is not expected value
2. Faulty DSIS.
Qualificati- 3. Faulty SRSCM.
• More than 1 sec
Diagnostic on
Time De-Qualifi-
• More than 2 sec
cation
TF1317111400DD

1. Ignition "OFF", connect scantool.

2. Ignition "ON"& Engine "OFF", select "Diagnostic
Trouble Codes(DTC)" mode.
3. Monitor diagnostic trouble code and present of
trouble code.
4. Using a scan tool, clear the DTC.

YF121010140021

5. Is DTC present problem ?

▶ Go to "W/Harness Inspection" procedure.
▶ Displaying nothing(no DTC) or DTC with la- ▶ Substitute a known-good DSIS, and check f-
bel "H"(historical) shows that Fault is intermitte- or proper operation.
nt caused by poor contact in the part's and/or If the problem is corrected, replace DSIS and
SRSCM connector or was repaired and SRSC- then go to "Verification of Vehicle Repair" proc-
M memory was not cleared. edure.
Thoroughly check connectors for looseness, p-
oor connection, bending, corrosion, contamin-
ation, deterioration, or damage. After a repair, it is essential to verify that the fault has
▶ Repair or replace as necessary and then go been corrected.
to "Verification of Vehicle Repair" procedure. 1. Connect scan tool and select "Diagnostic Trouble
Codes(DTC)" mode
2. Using a scan tool, clear the DTC.
1. Many malfunctions in the electrical system are
caused by poor harness and terminals. 3. Operate the vehicle within DTC Enable conditions in
General information.
Faults can also be caused by interference from other
electrical systems, and mechanical or chemical 4. Are any DTC present ?
damage. ▶ Go to the applicable troubleshooting proce-
2. Thoroughly check shorting connectors for looseness, dure.
poor connection, bending, corrosion, contamination, ▶ System is performing to specification at this
deterioration, or damage. time.
3. Has a problem been found?
▶ Repair as necessary and then go to "Verific-
ation of Vehicle Repair" procedure.
▶ Go to "Component Inspection" procedure.

1. Ignition "ON" & Engine "OFF" and Using a scan tool,

clear the DTC.
2. Ignition "OFF".
3. Disconnect the battery (-) terminal cable from the
battery, and wait at least one minutes.
4. Disconnect DSIS connector .
5. Substitute the DSIS and check for proper operation.
6. Is DTC present problem ?
▶ Substitute a known-good SRSCM, and che-
ck for proper operation.
If the problem is corrected, replace SRSCM a-
nd then go to "Verification of Vehicle Repair" p-
rocedure.
▶ Substitute the SRSCM main harness and ch-
eck for proper operation.
If the problem is corrected, replace SRSCM m-
ain harness and then go to "Verification of Veh-
icle Repair" procedure.
TF121711140011

Side Impact Sensor(SIS) is located in both side of center

The SRSCM sets DTC B1403 if there is any fault in PSIS

circuit.

DTC Strategy • Check Data

Enable Conditions • Ignition "ON"
• PSIS send defect code
Threshold Value 1. Faulty PSIS circuit.
• PSIS output is not expected value
2. Faulty PSIS.
Qualificati- 3. Faulty SRSCM.
• More than 1 sec
Diagnostic on
Time De-Qualifi-
• More than 2 sec
cation
TF1317111403DD

1. Ignition "OFF", connect scantool.

2. Ignition "ON"& Engine "OFF", select "Diagnostic
Trouble Codes(DTC)" mode.
3. Monitor diagnostic trouble code and present of
trouble code.
4. Using a scan tool, clear the DTC.

YF121010140321

5. Is DTC present problem ?

▶ Go to "W/Harness Inspection" procedure.
▶ Displaying nothing(no DTC) or DTC with la- ▶ Substitute a known-good PSIS, and check f-
bel "H"(historical) shows that Fault is intermitte- or proper operation.
nt caused by poor contact in the part's and/or If the problem is corrected, replace PSIS and t
SRSCM connector or was repaired and SRSC- hen go to "Verification of Vehicle Repair" proc-
M memory was not cleared. edure.
Thoroughly check connectors for looseness, p-
oor connection, bending, corrosion, contamin-
ation, deterioration, or damage. After a repair, it is essential to verify that the fault has
▶ Repair or replace as necessary and then go been corrected.
to "Verification of Vehicle Repair" procedure. 1. Connect scan tool and select "Diagnostic Trouble
Codes(DTC)" mode
2. Using a scan tool, clear the DTC.
1. Many malfunctions in the electrical system are
caused by poor harness and terminals. 3. Operate the vehicle within DTC Enable conditions in
General information.
Faults can also be caused by interference from other
electrical systems, and mechanical or chemical 4. Are any DTC present ?
damage. ▶ Go to the applicable troubleshooting proce-
2. Thoroughly check shorting connectors for looseness, dure.
poor connection, bending, corrosion, contamination, ▶ System is performing to specification at this
deterioration, or damage. time.
3. Has a problem been found?
▶ Repair as necessary and then go to "Verific-
ation of Vehicle Repair" procedure.
▶ Go to "Component Inspection" procedure.

1. Ignition "ON" & Engine "OFF" and Using a scan tool,

clear the DTC.
2. Ignition "OFF".
3. Disconnect the battery (-) terminal cable from the
battery, and wait at least one minutes.
4. Disconnect PSIS connector .
5. Substitute the PSIS and check for proper operation.
6. Is DTC present problem ?
▶ Substitute a known-good SRSCM, and che-
ck for proper operation.
If the problem is corrected, replace SRSCM a-
nd then go to "Verification of Vehicle Repair" p-
rocedure.
▶ Substitute the SRSCM main harness and ch-
eck for proper operation.
If the problem is corrected, replace SRSCM m-
ain harness and then go to "Verification of Veh-
icle Repair" procedure.
TF121711140011

Side Impact Sensor(SIS) is located in both side of center

The SRSCM sets DTC B1409 if there is any error in

communication between DSIS and SRSCM.

DTC Strategy • Check Data

Enable Conditions • Ignition "ON"
• DSIS no acceleration data 1. Short to power in harness.
• DSIS High or Low of wire ignition short or Short to grou- 2. Short to ground in harness.
Threshold Value
nd. 3. Poor connection of connected
• DSIS High or Low of wire Open part(open).
4. Faulty DSIS.
Qualificati-
• More than 1 sec 5. Faulty SRSCM.
Diagnostic on
Time De-Qualifi-
• More than 2 sec
cation
TF1317111400DD

1. Ignition "OFF", connect scantool.

2. Ignition "ON"& Engine "OFF", select "Diagnostic
Trouble Codes(DTC)" mode.
3. Monitor diagnostic trouble code and present of
trouble code.
4. Using a scan tool, clear the DTC.

YF121010140921

5. Is DTC present problem ?

▶ Go to "W/Harness Inspection" procedure.
▶ Displaying nothing(no DTC) or DTC with la- ▶ Substitute a known-good DSIS, and check f-
bel "H"(historical) shows that Fault is intermitte- or proper operation.
nt caused by poor contact in the part's and/or If the problem is corrected, replace SRSCM a-
SRSCM connector or was repaired and SRSC- nd then go to "Verification of Vehicle Repair" p-
M memory was not cleared. rocedure.
Thoroughly check connectors for looseness, p-
oor connection, bending, corrosion, contamin-
ation, deterioration, or damage. After a repair, it is essential to verify that the fault has
▶ Repair or replace as necessary and then go been corrected.
to "Verification of Vehicle Repair" procedure. 1. Connect scan tool and select "Diagnostic Trouble
Codes(DTC)" mode
2. Using a scan tool, clear the DTC.
1. Many malfunctions in the electrical system are
caused by poor harness and terminals. 3. Operate the vehicle within DTC Enable conditions in
General information.
Faults can also be caused by interference from other
electrical systems, and mechanical or chemical 4. Are any DTC present ?
damage. ▶ Go to the applicable troubleshooting proce-
2. Thoroughly check shorting connectors for looseness, dure.
poor connection, bending, corrosion, contamination, ▶ System is performing to specification at this
deterioration, or damage. time.
3. Has a problem been found?
▶ Repair as necessary and then go to "Verific-
ation of Vehicle Repair" procedure.
▶ Go to "Component Inspection" procedure.

1. Ignition "ON" & Engine "OFF" and Using a scan tool,

Side Impact Sensor(SIS) is located in both side of center

The SRSCM sets DTC B1410 if there is any error in

communication between PSIS and SRSCM.

DTC Strategy • Check Data

Enable Conditions • Ignition "ON"
• PSIS no acceleration data 1. Short to power in harness.
• PSIS High or Low of wire ignition short or Short to grou- 2. Short to ground in harness.
Threshold Value
nd 3. Poor connection of connected
• PSIS High or Low of wire Open part(open).
4. Faulty PSIS.
Qualificati-
• More than 1 sec 5. Faulty SRSCM.
Diagnostic on
Time De-Qualifi-
• More than 2 sec
cation
TF1317111403DD

1. Ignition "OFF", connect scantool.

2. Ignition "ON"& Engine "OFF", select "Diagnostic
Trouble Codes(DTC)" mode.
3. Monitor diagnostic trouble code and present of
trouble code.
4. Using a scan tool, clear the DTC.

YF121010141021

5. Is DTC present problem ?

▶ Go to "W/Harness Inspection" procedure.
▶ Displaying nothing(no DTC) or DTC with la- ▶ Substitute a known-good PSIS, and check f-
bel "H"(historical) shows that Fault is intermitte- or proper operation.
nt caused by poor contact in the part's and/or If the problem is corrected, replace SRSCM a-
SRSCM connector or was repaired and SRSC- nd then go to "Verification of Vehicle Repair" p-
M memory was not cleared. rocedure.
Thoroughly check connectors for looseness, p-
oor connection, bending, corrosion, contamin-
ation, deterioration, or damage. After a repair, it is essential to verify that the fault has
▶ Repair or replace as necessary and then go been corrected.
to "Verification of Vehicle Repair" procedure. 1. Connect scan tool and select "Diagnostic Trouble
Codes(DTC)" mode
2. Using a scan tool, clear the DTC.
1. Many malfunctions in the electrical system are
caused by poor harness and terminals. 3. Operate the vehicle within DTC Enable conditions in
General information.
Faults can also be caused by interference from other
electrical systems, and mechanical or chemical 4. Are any DTC present ?
damage. ▶ Go to the applicable troubleshooting proce-
2. Thoroughly check shorting connectors for looseness, dure.
poor connection, bending, corrosion, contamination, ▶ System is performing to specification at this
deterioration, or damage. time.
3. Has a problem been found?
▶ Repair as necessary and then go to "Verific-
ation of Vehicle Repair" procedure.
▶ Go to "Component Inspection" procedure.

1. Ignition "ON" & Engine "OFF" and Using a scan tool,

Curtain Airbag (hereinafter referred to CAB)is located at

driver and passenger side of headliner
It protects passenger's head and shoulder from
fragments of glass or something sharpen caused by
overturn.
CAB is consist of air bag and inflator.
Air bag reduces impact of collision by fillied up gas.
Inflator keeps gas and uses it to deploy air bag on
collision.

The SRSCM sets DTC B1473 if the measured resistance

value of DCAB circuit is more than the threshold value.
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while.
DTC Strategy • Check Resistance
Enable Conditions • Ignition "ON" 1. Poor connection of connected
part.
Threshold Value • DCAB resistance ≥ 6.7Ω
2. Poor connection between sho-
Qualificati- rting bar and release pin.
• More than 2 sec
Diagnostic on 3. Faulty DCAB.
Time 4. Faulty SRSCM.
De-Qualifi-
• More than 4 sec
cation

Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1317111473DD

parameter on the Scantool.

1. Ignition "OFF", connect scantool. 1.1Ω＜ Resistance of curtain airbag
2. Ignition "ON"& Engine "OFF", select "Current Data" front-Driver ＜ 6.7Ω
mode.
In a case of an open in the curtain airbag
3. Monitor the "Curtain airbag front-Driver resistance" front-Driver circuit : FAIL
In a case of a short to battery in the curtain
airbag front-Driver circuit: FAIL
In a case of a short to ground in the curtain
airbag front-Driver circuit : FAIL

TF121711147321S

Fig.1) Normal Data damage.

4. Is parameter displayed within specifications? 3. Has a problem been found?
▶ Displaying nothing(no DTC) or DTC with la- ▶ Repair as necessary and then go to "Verific-
bel "H"(historical) shows that Fault is intermitte- ation of Vehicle Repair" procedure.
nt caused by poor contact in the part's and/or ▶ Go to "Squib Circuit Inspection" procedure.
SRSCM connector or was repaired and SRSC-
M memory was not cleared.
Thoroughly check shorting bar/shorting bar rel- 1. Ignition "OFF".
ease pin and connectors for looseness, poor
2. Disconnect (-) terminal cable from battery and wait
connection, bending, corrosion, contamination
for 1 minutes or more.
, deterioration, or damage.
▶ Repair or replace as necessary and then go 3. Disconnect DCAB module and connect the dummy
to "Verification of Vehicle Repair" procedure. and dummy adapter to main harness connector.

▶ Go to "W/Harness Inspection" procedure.

6. Is DTC present problem ?

▶ Go to "Main harness circuit inspection" pro-
cedure.
▶ Substitute a known-good DCAB assembly,
and check for proper operation.
If the problem is corrected, replace DCAB and
then go to "Verification of Vehicle Repair" proc-
edure.

1. Ignition "OFF".
2. Disconnect the battery (-) terminal cable from the
battery and wait at least one minutes.
3. Disconnect DCAB connector and SRSCM main
harness connector.
4. Measure resistance between terminal "Low" and
"High" of the DCAB harness connector.
approx. 1 Ω below
TF121711147332

5. Is the measured resistance within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

Curtain Airbag (hereinafter referred to CAB)is located at

The SRSCM sets DTC B1474 if the measured resistance

value of DCAB circuit is less than the threshold value.
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while.
DTC Strategy • Check Resistance
Enable Conditions • Ignition "ON" 1. Poor connection of connected
part.
Threshold Value • DCAB resistance ≤ 1.1Ω
2. Poor connection between sho-
Qualificati- rting bar and release pin.
• More than 2 sec
Diagnostic on 3. Faulty DCAB.
Time 4. Faulty SRSCM.
De-Qualifi-
• More than 4 sec
cation

Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1317111473DD

parameter on the Scantool.

TF121711147321S

Fig.1) Normal Data damage.

4. Is parameter displayed within specifications? 3. Has a problem been found?
▶ Displaying nothing(no DTC) or DTC with la- ▶ Repair as necessary and then go to "Verific-
bel "H"(historical) shows that Fault is intermitte- ation of Vehicle Repair" procedure.
nt caused by poor contact in the part's and/or ▶ Go to "Squib Circuit Inspection" procedure.
SRSCM connector or was repaired and SRSC-
M memory was not cleared.
Thoroughly check shorting bar/shorting bar rel- 1. Ignition "OFF".
ease pin and connectors for looseness, poor
2. Disconnect (-) terminal cable from battery and wait
connection, bending, corrosion, contamination
for 1 minutes or more.
, deterioration, or damage.
▶ Repair or replace as necessary and then go 3. Disconnect DCAB module and connect the dummy
to "Verification of Vehicle Repair" procedure. and dummy adapter to main harness connector.

▶ Go to "W/Harness Inspection" procedure.

6. Is DTC present problem ?

5. Is the measured resistance within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

Curtain Airbag (hereinafter referred to CAB)is located at

The SRSCM sets DTC B1475 if there is a short to ground

in DCAB harness.
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while.
DTC Strategy • Check Voltage
1. Short to ground in DCAB harn-
Enable Conditions • Ignition "ON" ess.
2. Poor connection of connected
Threshold Value • Short to ground in DCAB
part.
Qualificati- 3. Poor connection between sho-
• More than 2 sec
Diagnostic on rting bar and release pin.
Time 4. Faulty DCAB.
De-Qualifi-
• More than 4 sec 5. Faulty SRSCM.
cation

Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1317111473DD

parameter on the Scantool.

TF121711147321S

Fig.1) Normal Data damage.

4. Is parameter displayed within specifications? 3. Has a problem been found?
▶ Displaying nothing(no DTC) or DTC with la- ▶ Repair as necessary and then go to "Verific-
bel "H"(historical) shows that Fault is intermitte- ation of Vehicle Repair" procedure.
nt caused by poor contact in the part's and/or ▶ Go to "Squib Circuit Inspection" procedure.
SRSCM connector or was repaired and SRSC-
M memory was not cleared.
Thoroughly check shorting bar/shorting bar rel- 1. Ignition "OFF"
ease pin and connectors for looseness, poor
2. Disconnect (-) terminal cable from battery and wait
connection, bending, corrosion, contamination
for 1 minutes or more.
, deterioration, or damage.
▶ Repair or replace as necessary and then go 3. Disconnect DCAB module and connect the dummy
to "Verification of Vehicle Repair" procedure. and dummy adapter to main harness connector.

▶ Go to "W/Harness Inspection" procedure.

6. Is DTC present problem ?

1. Ignition "OFF".
2. Disconnect the battery (-) terminal cable from the
battery and wait at least one minutes.
3. Disconnect DCAB connector and SRSCM main
harness connector.
4. Measure resistance between terminal "Low" or "High"
of the DCAB harness connector and chassis ground.

∞
TF121711147532

5. Is the measured resistance within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

Curtain Airbag (hereinafter referred to CAB)is located at

The SRSCM sets DTC B1476 if there is a short to power

in DCAB harness.
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while.
DTC Strategy • Check Voltage
1. Short to power in DCAB harne-
Enable Conditions • Ignition "ON" ss.
2. Poor connection of connected
Threshold Value • Short to power in DCAB
part.
Qualificati- 3. Poor connection between sho-
• More than 2 sec
Diagnostic on rting bar and release pin.
Time 4. Faulty DCAB.
De-Qualifi-
• More than 4 sec 5. Faulty SRSCM.
cation

Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1317111473DD

parameter on the Scantool.

TF121711147321S

Fig.1) Normal Data damage.

4. Is parameter displayed within specifications? 3. Has a problem been found?
▶ Displaying nothing(no DTC) or DTC with la- ▶ Repair as necessary and then go to "Verific-
bel "H"(historical) shows that Fault is intermitte- ation of Vehicle Repair" procedure.
nt caused by poor contact in the part's and/or ▶ Go to "Squib Circuit Inspection" procedure.
SRSCM connector or was repaired and SRSC-
M memory was not cleared.
Thoroughly check shorting bar/shorting bar rel- 1. Ignition "OFF".
ease pin and connectors for looseness, poor
2. Disconnect (-) terminal cable from battery and wait
connection, bending, corrosion, contamination
for 1 minutes or more.
, deterioration, or damage.
▶ Repair or replace as necessary and then go 3. Disconnect DCAB module and connect the dummy
to "Verification of Vehicle Repair" procedure. and dummy adapter to main harness connector.

▶ Go to "W/Harness Inspection" procedure.

6. Is DTC present problem ?

1. Ignition "OFF".
2. Disconnect the battery (-) terminal cable from the
battery and wait at least one minutes.
3. Disconnect DCAB connector and SRSCM main
harness connector.
4. Connect the battery (-) terminal cable to the battery
and Ignition "ON" & Engine "OFF".
5. Measure voltage between terminal "Low" or "High" of
the DCAB harness connector and chassis ground.
approx. 0V
TF121711147632

6. Is the measured voltage within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

Curtain Airbag (hereinafter referred to CAB)is located at

The SRSCM sets DTC B1477 if the measured resistance

value of PCAB circuit is more than the threshold value.
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while.
DTC Strategy • Check Resistance
Enable Conditions • Ignition "ON" 1. Poor connection of connected
part.
Threshold Value • PCAB resistance ≥ 6.7Ω
2. Poor connection between sho-
Qualificati- rting bar and release pin.
• More than 2 sec
Diagnostic on 3. Faulty PCAB.
Time 4. Faulty SRSCM.
De-Qualifi-
• More than 4 sec
cation

Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1317111477DD

resistance" parameter on the Scantool.

1. Ignition "OFF", connect scantool. 1.1Ω＜ Resistance of curtain airbag
2. Ignition "ON"& Engine "OFF", select "Current Data" front-Passenger ＜ 6.7Ω
mode.
In a case of an open in the curtain airbag
3. Monitor the "Curtain airbag front-Passenger front-Passenger circuit : FAIL
In a case of a short to battery in the curtain
airbag front-Passenger circuit : FAIL
In a case of a short to ground in the curtain
airbag front-Passenger circuit : FAIL

TF121711147721S

Fig.1) Normal Data damage.

4. Is parameter displayed within specifications? 3. Has a problem been found?
▶ Displaying nothing(no DTC) or DTC with la- ▶ Repair as necessary and then go to "Verific-
bel "H"(historical) shows that Fault is intermitte- ation of Vehicle Repair" procedure.
nt caused by poor contact in the part's and/or ▶ Go to "Squib Circuit Inspection" procedure.
SRSCM connector or was repaired and SRSC-
M memory was not cleared.
Thoroughly check shorting bar/shorting bar rel- 1. Ignition "OFF".
ease pin and connectors for looseness, poor
2. Disconnect (-) terminal cable from battery and wait
connection, bending, corrosion, contamination
for 1 minutes or more.
, deterioration, or damage.
▶ Repair or replace as necessary and then go 3. Disconnect PCAB module and connect the dummy
to "Verification of Vehicle Repair" procedure. and dummy adapter to main harness connector.

▶ Go to "W/Harness Inspection" procedure.

6. Is DTC present problem ?

1. Ignition "OFF".
2. Disconnect the battery (-) terminal cable from the
battery and wait at least one minutes.
3. Disconnect PCAB connector and SRSCM main
harness connector.
4. Measure resistance between terminal "Low" and
"High" of the PCAB harness connector.
approx. 1 Ω below
TF121711147732

5. Is the measured resistance within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

Curtain Airbag (hereinafter referred to CAB)is located at

The SRSCM sets DTC B1478 if the measured resistance

value of PCAB circuit is less than the threshold value.
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while.
DTC Strategy • Check Resistance
Enable Conditions • Ignition "ON" 1. Poor connection of connected
part.
Threshold Value • PCAB resistance ≤ 1.1Ω
2. Poor connection between sho-
Qualificati- rting bar and release pin.
• More than 2 sec
Diagnostic on 3. Faulty PCAB.
Time 4. Faulty SRSCM.
De-Qualifi-
• More than 4 sec
cation

Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1317111477DD

resistance" parameter on the Scantool.

TF121711147721S

Fig.1) Normal Data damage.

4. Is parameter displayed within specifications? 3. Has a problem been found?
▶ Displaying nothing(no DTC) or DTC with la- ▶ Repair as necessary and then go to "Verific-
bel "H"(historical) shows that Fault is intermitte- ation of Vehicle Repair" procedure.
nt caused by poor contact in the part's and/or ▶ Go to "Squib Circuit Inspection" procedure.
SRSCM connector or was repaired and SRSC-
M memory was not cleared.
Thoroughly check shorting bar/shorting bar rel- 1. Ignition "OFF".
ease pin and connectors for looseness, poor
2. Disconnect (-) terminal cable from battery and wait
connection, bending, corrosion, contamination
for 1 minutes or more.
, deterioration, or damage.
▶ Repair or replace as necessary and then go 3. Disconnect PCAB module and connect the dummy
to "Verification of Vehicle Repair" procedure. and dummy adapte to main harness connector.

▶ Go to "W/Harness Inspection" procedure.

6. Is DTC present problem ?

5. Is the measured resistance within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

Curtain Airbag (hereinafter referred to CAB)is located at

The SRSCM sets DTC B1479 if there is a short to ground

in PCAB harness.
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while.
DTC Strategy • Check Voltage
1. Short to ground in PCAB harn-
Enable Conditions • Ignition "ON" ess.
2. Poor connection of connected
Threshold Value • Short to ground in PCAB
part.
Qualificati- 3. Poor connection between sho-
• More than 2 sec
Diagnostic on rting bar and release pin.
Time 4. Faulty PCAB.
De-Qualifi-
• More than 4 sec 5. Faulty SRSCM.
cation

Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1317111477DD

resistance" parameter on the Scantool.

TF121711147721S

Fig.1) Normal Data damage.

4. Is parameter displayed within specifications? 3. Has a problem been found?
▶ Displaying nothing(no DTC) or DTC with la- ▶ Repair as necessary and then go to "Verific-
bel "H"(historical) shows that Fault is intermitte- ation of Vehicle Repair" procedure.
nt caused by poor contact in the part's and/or ▶ Go to "Squib Circuit Inspection" procedure.
SRSCM connector or was repaired and SRSC-
M memory was not cleared.
Thoroughly check shorting bar/shorting bar rel- 1. Ignition "OFF".
ease pin and connectors for looseness, poor
2. Disconnect (-) terminal cable from battery and wait
connection, bending, corrosion, contamination
for 1 minutes or more.
, deterioration, or damage.
▶ Repair or replace as necessary and then go 3. Disconnect PCAB module and connect the dummy
to "Verification of Vehicle Repair" procedure. and dummy adapter to main harness connector.

▶ Go to "W/Harness Inspection" procedure.

6. Is DTC present problem ?

1. Ignition "OFF".
2. Disconnect the battery (-) terminal cable from the
battery and wait at least one minutes.
3. Disconnect PCAB connector and SRSCM main
harness connector.
4. Measure resistance between terminal "Low" or "High"
of the PCAB harness connector and chassis ground.

∞
TF121711147932

5. Is the measured resistance within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

Curtain Airbag (hereinafter referred to CAB)is located at

The SRSCM sets DTC B1480 if there is a short to power

in PCAB harness.
*In this case, SRSCM checks if there's any fault in circuit
by sending current for a while.
DTC Strategy • Check Voltage
1. Short to power in PCAB harne-
Enable Conditions • Ignition "ON" ss.
2. Poor connection of connected
Threshold Value • Short to power in PCAB
part.
Qualificati- 3. Poor connection between sho-
• More than 2 sec
Diagnostic on rting bar and release pin.
Time 4. Faulty PCAB.
De-Qualifi-
• More than 4 sec 5. Faulty SRSCM.
cation

Ignition ON 1.1Ω ≤ Squib resistance ≤ 6.7Ω

TF1317111477DD

resistance" parameter on the Scantool.

TF121711147721S

Fig.1) Normal Data damage.

4. Is parameter displayed within specifications? 3. Has a problem been found?
▶ Displaying nothing(no DTC) or DTC with la- ▶ Repair as necessary and then go to "Verific-
bel "H"(historical) shows that Fault is intermitte- ation of Vehicle Repair" procedure.
nt caused by poor contact in the part's and/or ▶ Go to "Squib Circuit Inspection" procedure.
SRSCM connector or was repaired and SRSC-
M memory was not cleared.
Thoroughly check shorting bar/shorting bar rel- 1. Ignition "OFF".
ease pin and connectors for looseness, poor
2. Disconnect (-) terminal cable from battery and wait
connection, bending, corrosion, contamination
for 1 minutes or more.
, deterioration, or damage.
▶ Repair or replace as necessary and then go 3. Disconnect PCAB module and connect the dummy
to "Verification of Vehicle Repair" procedure. and dummy adapter to main harness connector.

▶ Go to "W/Harness Inspection" procedure.

6. Is DTC present problem ?

1. Ignition "OFF".
2. Disconnect the battery (-) terminal cable from the
battery and wait at least one minutes.
3. Disconnect PCAB connector and SRSCM main
harness connector.
4. Connect the battery (-) terminal cable to the battery
and Ignition "ON" & Engine "OFF".
5. Measure voltage between terminal "Low" or "High" of
the PCAB harness connector and chassis ground.
approx. 0V
TF121711148032

6. Is the measured voltage within specifications? ▶ Go to the applicable troubleshooting proce-

After a repair, it is essential to verify that the fault has

In collision, SRSCM sends current to pertinent air bag for

deployment.
Besides SRSCM performs diagnosis of overall air bag
system and light warning lamp if there's any fault in it.
Main functions of SRSCM are as follows.
1. Collision and Passenger presence Detection.
2. Determination of BPT and air bag deployment in
accordane with given condition.
3. Internal and external diagnosis of air bag system.
4. Warning by warning lamp if there's any fault in
airbag system.
5. Proffering data for scantool diagnosis.

The SRSCM sets DTC B1620 if there is any fault in

SRSCM.

DTC Strategy • Check SRSCM

Enable Conditions • Ignition "ON"
Qualificati- 1. SRSCM.
• -
Diagnostic on
Time De-Qualifi-
• ∞(infinite-DTC cannot be erased)
cation

2. Ignition "ON"& Engine "OFF", select "Diagnostic

1. Ignition "OFF", connect scantool. Trouble Codes(DTC)" mode.
3. Monitor diagnostic trouble code and present of
trouble code.
4. Using a scan tool, clear the DTC.

STDRT0525N

5. Is DTC present problem ?

▶ Internal fault of SRSCM. Substitute with a S-
RSCM and check for proper operation.
If the problem is corrected, replace SRSCM a-
nd then go to "Verification of Vehicle Repair" p-
rocedure.

After a repair, it is essential to verify that the fault has

been corrected.
1. Connect scan tool and select "Diagnostic Trouble
Codes(DTC)" mode
2. Using a scan tool, clear the DTC.
3. Operate the vehicle within DTC Enable conditions in
General information.
4. Are any DTC present ?
▶ Go to the applicable troubleshooting proce-
dure.
▶ System is performing to specification at this
time.
TF121711139511

In collision, SRSCM sends current to pertinent air bag for

The SRSCM sets DTC B1650 if DAB or PAB deploys.

DTC Strategy • Check DAB or PAB deployment

Enable Conditions • Ignition "ON"
Qualificati- 1. SRSCM.
• - 2. DAB or PAB deployment
Diagnostic on
Time De-Qualifi-
• ∞(infinite-DTC cannot be erased)
cation

Trouble Codes(DTC)" mode.

1. Ignition "OFF", connect scantool. 3. Monitor diagnostic trouble code and present of
2. Ignition "ON"& Engine "OFF", select "Diagnostic trouble code.
4. Using a scan tool, clear the DTC.

STDRT0526N

5. Is DTC present problem ?

▶ DTC caused by deployment of front(1ST)air
bag. Substitute with a SRSCM and check for p-
roper operation.
If the problem is corrected, replace SRSCM a-
nd then go to "Verification of Vehicle Repair" p-
rocedure.

After a repair, it is essential to verify that the fault has

In collision, SRSCM sends current to pertinent air bag for

The SRSCM sets DTC B1651 if DSAB and DCAB

deploys.

DTC Strategy • Check DSAB and DCAB deployment

Enable Conditions • Ignition "ON"
Qualificati- 1. SRSCM.
• - 2. DSAB and DCAB deployment
Diagnostic on
Time De-Qualifi-
• ∞(infinite-DTC cannot be erased)
cation

2. Ignition "ON"& Engine "OFF", select "Diagnostic

1. Ignition "OFF", connect scantool. Trouble Codes(DTC)" mode.
3. Monitor diagnostic trouble code and present of
trouble code.
4. Using a scan tool, clear the DTC.

STDRT0527N

5. Is DTC present problem ?

▶ DTC caused by deployment of front driver
SAB and driver CAB. Substitute with a SRSCM
and check for proper operation.
If the problem is corrected, replace SRSCM a-
nd then go to "Verification of Vehicle Repair" p-
rocedure.

After a repair, it is essential to verify that the fault has

In collision, SRSCM sends current to pertinent air bag for

The SRSCM sets DTC B1652 if PSAB and PCAB

deploys.

DTC Strategy • Check PSAB and PCAB deployment

Enable Conditions • Ignition "ON"
Qualificati- 1. SRSCM.
• - 2. PSAB and PCAB deployment
Diagnostic on
Time De-Qualifi-
• ∞(infinite-DTC cannot be erased)
cation

2. Ignition "ON"& Engine "OFF", select "Diagnostic

1. Ignition "OFF", connect scantool. Trouble Codes(DTC)" mode.
3. Monitor diagnostic trouble code and present of
trouble code.
4. Using a scan tool, clear the DTC.

STDRT0528N

5. Is DTC present problem ?

▶ DTC caused by deployment of front passen-
ger SAB and passenger CAB. Substitute with a
SRSCM and check for proper operation.
If the problem is corrected, replace SRSCM a-
nd then go to "Verification of Vehicle Repair" p-
rocedure.

After a repair, it is essential to verify that the fault has

When the new SRSCM is set up on a vehicle by

SRSCM's failure, SRSCM(ACU) Variant coding must be
performed.
Since a new SRSCM is normally supplied with unsetting
state, the ACU has to be set up based on the vehicle
specificaions by operating ACU Variant Coding
procedure.
The SRSCM checks its specifications in it in order to run
its airbag system normally.
If the warning light of airbag is flickering continuously,
that is because SRSCM(ACU) Variant Coding is not
completed.

In order to run the airbag system normally, check if there

is an incorrect vehicle specfications at performing
SRSCM(ACU) Variant Coding. This DTC is set up when
SRSCM(ACU) Variant Coding is not done over 255
times.
DTC Strategy • SRSCM Coding
1. Connection for DAB,PAB,BPT,
Enable Conditions • SRSCM(ACU) Variant Coding
CAB,and SAB
• Failure of SRSCM(ACU) Variant Coding is over 254 tim- 2. SRSCM(ACU) Variant Coding's
Threshold Value
es. failure
3. Incorrect vehicle specification-
Qualificati-
• More than 100msec s
on
Diagnostic 4. SRSCM's connector and circu-
Time it
De-Qualifi-
• N/A 5. SRSCM
cation

1. Ignition "OFF", connect scantool.

2. Ignition "ON"& Engine "OFF", select "Diagnostic
Trouble Codes(DTC)" mode.
3. Monitor diagnostic trouble code and present of
trouble code.
4. Using a scan tool, clear the DTC.

YF131010168321

5. Is DTC present problem ?

▶ Replace it with a new one and then check if
the vehicle specifications are correct. After th-
at, perform SRSCM(ACU) Variant Coding and
then, go to "Verification of Vehicle Repair" pro-
cedure.
▶ Displaying nothing(no DTC) or DTC with la-
bel "H"(historical) shows that Fault is intermitte-
nt caused by poor contact in the part's and/or
SRSCM connector or was repaired and SRSC-
M memory was not cleared.
▶ Thoroughly check release pin and connect-
ors for looseness, poor connection, bending,
corrosion, contamination, deterioration, or da-
mage.
▶ Repair or replace as necessary and then go
to "Verification of Vehicle Repair" procedure.

■
SBKRT9526L

SBKRT9527L
SBKRT9528L

SBKRT9529L
STDRT0542N

SBKRT9531L
SBKRT9532L

Fig.1) Initial ACU Variant Coding screen

Fig.2) VIN Code entering screen
Fig.3) Variant coding's proceeding screen-1
Fig.4) Variant coding's proceeding screen-2
Fig.5) Variant coding is completed
Fig.6) Screen of Retrying the Variant coding after
finishing variant coding
Fig.7) Screen of communication failure

■
SBKRT9533L

STDRT0543N
SBKRT9535L

SBKRT9536L
SBKRT9537L

STDRT0544N
SBKRT9539L

Fig.1) Initial ACU Variant Coding screen

Fig.2) ACU CODING Code entering screen
Fig.3) Screen of rechecking ACU CODING code's
entering
Fig.4) Variant coding's proceeding screen-1
Fig.5) Variant coding's proceeding screen-2
Fig.6) Variant coding is completed
Fig.7) Screen of Retrying the Variant coding after
finishing variant coding

After a repair, it is essential to verify that the fault has

When the new SRSCM is set up on a vehicle by

In order to run the airbag system normally, check if there

is an incorrect vehicle specfications at performing
SRSCM(ACU) Variant Coding. This DTC is set up if there
is a difference between actual vehicle specifications and
stored vehicle specifications on SRSCM(ACU).
DTC Strategy • SRSCM Coding
1. Connection for DAB,PAB,BPT,
Enable Conditions • For 6 seconds after Start-Up
CAB,and SAB
• SRSCM has an unmatching specifications with actual 2. SRSCM(ACU) Variant Coding's
Threshold Value
vehicle specifications failure
3. Incorrect vehicle specification-
Qualificati-
• More than 100msec s
on
Diagnostic 4. SRSCM's connector and circu-
Time it
De-Qualifi-
• N/A 5. SRSCM
cation

1. Ignition "OFF", connect scantool.

2. Ignition "ON"& Engine "OFF", select "Diagnostic
Trouble Codes(DTC)" mode.
3. Monitor diagnostic trouble code and present of
trouble code.
4. Using a scan tool, clear the DTC.

YF131010168421

5. Is DTC present problem ?

■
SBKRT9526L

SBKRT9527L
SBKRT9528L

SBKRT9529L
STDRT0542N

SBKRT9531L
SBKRT9532L

Fig.1) Initial ACU Variant Coding screen

■
SBKRT9533L

STDRT0543N
SBKRT9535L

SBKRT9536L
SBKRT9537L

STDRT0544N
SBKRT9539L

Fig.1) Initial ACU Variant Coding screen

After a repair, it is essential to verify that the fault has

When the new SRSCM is set up on a vehicle by

In order to run the airbag system normally, check if there

is an incorrect vehicle specfications at performing
SRSCM(ACU) Variant Coding. This DTC is set up if
SRSCM's variant code doesn't match with the entering
variant code at performing SRSCM(ACU) Variant Coding
procedure.
DTC Strategy • SRSCM Coding
1. Connection for DAB,PAB,BPT,
Enable Conditions • SRSCM(ACU) Variant Coding Mode
CAB,and SAB
• Incorrect variant code entering at SRSCM(ACU) Varia- 2. SRSCM(ACU) Variant Coding's
Threshold Value
nt Coding mode failure
3. Incorrect vehicle specification-
Qualificati-
• More than 100msec s
on
Diagnostic 4. SRSCM's connector and circu-
Time it
De-Qualifi-
• More than 100msec 5. SRSCM
cation

1. Ignition "OFF", connect scantool.

2. Ignition "ON"& Engine "OFF", select "Diagnostic
Trouble Codes(DTC)" mode.
3. Monitor diagnostic trouble code and present of
trouble code.
4. Using a scan tool, clear the DTC.

YF131010176221

5. Is DTC present problem ?

▶ Check if the vehicle specifications are corr-
ect. After that, perform SRSCM(ACU) Variant
Coding and then, go to "Verification of Vehicle
Repair" procedure.
▶ Displaying nothing(no DTC) or DTC with la-
bel "H"(historical) shows that Fault is intermitte-
nt caused by poor contact in the part's and/or
SRSCM connector or was repaired and SRSC-
M memory was not cleared.
▶ Thoroughly check release pin and connect-
ors for looseness, poor connection, bending,
corrosion, contamination, deterioration, or da-
mage.
▶ Repair or replace as necessary and then go
to "Verification of Vehicle Repair" procedure.

■
SBKRT9526L

SBKRT9527L
SBKRT9528L

SBKRT9529L
STDRT0542N

SBKRT9531L
SBKRT9532L

Fig.1) Initial ACU Variant Coding screen

■
SBKRT9533L

STDRT0543N
SBKRT9535L

SBKRT9536L
SBKRT9537L

STDRT0544N
SBKRT9539L

Fig.1) Initial ACU Variant Coding screen

After a repair, it is essential to verify that the fault has

Air bag warning lamp is located at cluster

When key is in 'ignition on' position, SRSCM performs
diagnosis of overall air bag system.If there's no fault, air
bag.
Warning lamp in cluster flickers for a whlie and then
goes out.
SRSCM measures voltage of out terminal of warning
lamp to check if warnning lamp is operated in
accordance with signal SRSCM sends.

The SRSCM sets DTC B2500 if there is an open circuit or

short to ground in air bag circuit harness.

DTC Strategy • Check voltage

1. Burnt-out fuse.
Enable conditions • Ignition "ON"
2. Burnt-out warning lamp.
Threshold Value • Warning lamp failure Ground short or Battery short 3. Open circuit in warning lamp
harness.
Qualificati-
• More than 1.2 sec 4. Short circuit in warning lamp h-
Diagnostic on
arness.
Time De-Qualifi- 5. Faulty SRSCM.
• More than 2 sec
cation
TF1317112500DD

1. Ignition "OFF", connect scantool.

2. Ignition "ON"& Engine "OFF", select "Diagnostic
Trouble Codes(DTC)" mode.
3. Monitor diagnostic trouble code and present of
trouble code.
4. Using a scan tool, clear the DTC.

STDRT0537N

5. Is DTC present problem ?

▶ Go to "W/Harness Inspection" procedure.
▶ Displaying nothing(no DTC) or DTC with la-
bel "H"(historical) shows that Fault is intermitte-
nt caused by poor contact in the part's and/or
SRSCM connector or was repaired and SRSC-
M memory was not cleared.
Thoroughly check shorting bar/shorting bar rel-
ease pin and connectors for looseness, poor
connection, bending, corrosion, contamination
, deterioration, or damage.
▶ Repair or replace as necessary and then go
to "Verification of Vehicle Repair" procedure.

1. Many malfunctions in the electrical system are

caused by poor harness and terminals.
Faults can also be caused by interference from other
electrical systems, and mechanical or chemical
damage.
2. Thoroughly check shorting connectors for looseness,
poor connection, bending, corrosion, contamination,
deterioration, or damage.
3. Has a problem been found?
▶ Repair as necessary and then go to "Verific-
ation of Vehicle Repair" procedure.
▶ Go to "Main harness circuit inspection" pro-
cedure.

1. Ignition "OFF".
2. Disconnect the battery (-) terminal cable from the
battery and wait at least one minutes.
3. Disconnect SRSCM main harness connector.
4. Connect the battery (-) terminal cable to the battery
and Ignition "ON" & Engine "OFF".
5. Measure voltage between Air bag warning lamp
terminal of the INSTRUMENT CLUSTER harness
connector and chassis ground.
Approx. Batt Voltage
TF121711250031

6. Is the measured resistance within specifications? ▶ Go to the applicable troubleshooting proce-

▶ Check warning lamp and connectors for lo- dure.
oseness, poor connection, bending, corrosion, ▶ System is performing to specification at this
contamination, deterioration, or damage. Rep- time.
air or replace as necessary and then go to "Ve-
rification of Vehicle Repair" procedure.
▶ Check airbag fuse, junction block, Warning
Lamp, harness between junction block and S-
RSCM .
Repair as necessary and go to "Verification of
Vehicle Repair" procedure.

After a repair, it is essential to verify that the fault has

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