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SUPPLEMENTAL RESTRAINT SYSTEMS AIRBAG SYSTEM B1661/44 Roll Over Cut Off Indicator Malfunction
DESCRIPTION
The curtain shield airbag cutoff switch is a mechanism that operates both the right and left sides of the curtain shield airbag and
the front seat outer belt when the center airbag sensor detects a roll-over.
The RSCA OFF indicator is installed in the combination meter.
If the curtain shield airbag cutoff switch is operated, the indicator comes on to inform the drive that the roll-over detection
system is not working.
The initial setting of the roll-over detection system is on. It automatically operates every time the ignition switch is turned to ON.
DTC Code DTC Detection Condition Trouble Area
When one of the following conditions is
met:
· The center airbag sensor · Combination meter assembly
receives an open signal or short · Curtain shield airbag cutoff
to ground in the RSCA OFF switch
B1661/44 indicator circuit. · Center airbag sensor assembly
· An RSCA OFF indicator · Instrument panel wire
malfunction. · No. 3 instrument panel wire
· A center airbag sensor
malfunction.
WIRING DIAGRAM
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CAUTION / NOTICE / HINT
NOTICE:
· After turning the ignition switch off, waiting time may be required before disconnecting the cable from the battery
terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding
with work (See page General>INTRODUCTION>REPAIR INSTRUCTION>PRECAUTION).
· When disconnecting the cable, some systems need to be initialized after the cable is reconnected (See page
General>INTRODUCTION>REPAIR INSTRUCTION>INITIALIZATION).
PROCEDURE
1.CHECK COMBINATION METER (SOURCE VOLTAGE)
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a.
Turn the ignition switch off.
b. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
c. Remove the combination meter with the connector connected.
d. Disconnect the connector from the center airbag sensor.
e. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
f. Turn the ignition switch to ON.
g. Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Switch Specified
Connection Condition Condition
E7-11 (R/O) - Ignition switch
11 to 14 V
Body ground ON
h. Turn the ignition switch off.
OK
2.CHECK RSCA OFF INDICATOR CIRCUIT
NG
GO TO METER / GAUGE SYSTEM
(See pageVehicle Interior>METER / GAUGE / DISPLAY>METER / GAUGE SYSTEM>Voltage Meter Malfunction)
2.CHECK RSCA OFF INDICATOR CIRCUIT
a. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
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b. Disconnect the connector from the combination meter.
c. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
d. Turn the ignition switch to ON.
e. Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Switch Specified
Connection Condition Condition
E7-11 (R/O) - Ignition switch
Below 1 V
Body ground ON
f. Turn the ignition switch off.
g. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
h. Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Specified
Condition
Connection Condition
E7-11 (R/O) -
Always Below 1 Ω
E47-15 (RMIL)
E7-11 (R/O) -
Always 1 MΩ or higher
Body ground
OK
3.INSPECT CURTAIN SHIELD AIRBAG CUTOFF SWITCH
NG
REPLACE INSTRUMENT PANEL WIRE
3.INSPECT CURTAIN SHIELD AIRBAG CUTOFF SWITCH
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a.
Remove the curtain shield airbag cutoff switch (See page Vehicle Interior>SUPPLEMENTAL RESTRAINT
SYSTEMS>CURTAIN SHIELD AIRBAG CUTOFF SWITCH>REMOVAL).
b. Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Switch Specified
Connection Condition Condition
Curtain shield
airbag cutoff
4-1 Below 1 Ω
switch is in on
position
Curtain shield
airbag cutoff
4-1 1 MΩ or higher
switch is in off
position
OK
4.CHECK CURTAIN SHIELD AIRBAG CUTOFF SWITCH CIRCUIT
NG
REPLACE CURTAIN SHIELD AIRBAG CUTOFF SWITCH
(See pageVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>CURTAIN SHIELD AIRBAG CUTOFF
SWITCH>REMOVAL)
4.CHECK CURTAIN SHIELD AIRBAG CUTOFF SWITCH CIRCUIT
a. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
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b. Turn the ignition switch to ON.
c. Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Switch Specified
Connection Condition Condition
G3-4 - Body Ignition switch
Below 1 V
ground ON
G3-1 - Body Ignition switch
Below 1 V
ground ON
d. Turn the ignition switch off.
e. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
f. Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Specified
Condition
Connection Condition
E47-14 (RMSW) -
Always Below 1 Ω
G3-4
G3-4 - Body
Always 1 MΩ or higher
ground
G3-1 - Body
Always Below 1 Ω
ground
OK
REPLACE CENTER AIRBAG SENSOR ASSEMBLY
(See pageVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>CENTER AIRBAG SENSOR
ASSEMBLY>REMOVAL)
NG
5.CHECK INSTRUMENT PANEL WIRE (INSTRUMENT PANEL WIRE - NO. 3 INSTRUMENT PANEL
WIRE AND BODY GROUND)
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5.CHECK INSTRUMENT PANEL WIRE (INSTRUMENT PANEL WIRE - NO. 3 INSTRUMENT PANEL WIRE AND BODY
GROUND)
a. Disconnect the instrument panel wire connector from the No. 3 instrument panel wire.
b. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
c. Turn the ignition switch to ON.
d. Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Switch Specified
Connection Condition Condition
GE2-20 - Body Ignition switch
Below 1 V
ground ON
e. Turn the ignition switch off.
f. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
g. Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Specified
Condition
Connection Condition
E47-14 (RMSW) -
Always Below 1 Ω
GE2-20
GE2-20 - Body
Always 1 MΩ or higher
ground
OK
REPLACE NO. 3 INSTRUMENT PANEL WIRE
NG
REPLACE INSTRUMENT PANEL WIRE
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