Roll Over Cut Off Indicator Malfunction - Airbag System

SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: B1661/44: Roll Over Cut Off Indicator Malfunction

DTC 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 engine switch is turned on (IG).






WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK COMBINATION METER (SOURCE VOLTAGE)





(a) Turn the engine 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) Measure the voltage according to the value(s) in the table below.
Standard Voltage:






NG -- GO TO METER / GAUGE SYSTEM
OK -- Continue to next step.
2. CHECK RSCA OFF INDICATOR CIRCUIT





(a) Turn the engine switch off.
(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(c) Disconnect the connector from the center airbag sensor and combination meter.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:





(e) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(f) Measure the voltage according to the value(s) in the table below.
Standard Voltage:






NG -- CHECK FLOOR WIRE (CENTER AIRBAG SENSOR - INSTRUMENT PANEL WIRE)
OK -- Continue to next step.
3. INSPECT CURTAIN SHIELD AIRBAG CUTOFF SWITCH





(a) Turn the engine switch off.
(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(c) Remove the curtain shield airbag cutoff switch.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






NG -- REPLACE CURTAIN SHIELD AIRBAG CUTOFF SWITCH
OK -- Continue to next step.
4. CHECK CURTAIN SHIELD AIRBAG CUTOFF SWITCH CIRCUIT





(a) Turn the engine switch off.
(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(c) Disconnect the connector from the center airbag sensor and curtain shield airbag cutoff switch.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:





(e) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(f) Measure the voltage according to the value(s) in the table below.
Standard Voltage:






NG -- CHECK NO. 2 FLOOR WIRE (CENTER AIRBAG SENSOR - INSTRUMENT PANEL WIRE)
OK -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY
5. CHECK FLOOR WIRE (CENTER AIRBAG SENSOR - INSTRUMENT PANEL WIRE)





(a) Turn the engine switch off.
(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(c) Disconnect the floor wire connector from the instrument panel wire.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:





(e) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(f) Measure the voltage according to the value(s) in the table below.
Standard Voltage:






NG -- REPLACE FLOOR WIRE
OK -- REPLACE INSTRUMENT PANEL WIRE
6. CHECK NO. 2 FLOOR WIRE (CENTER AIRBAG SENSOR - INSTRUMENT PANEL WIRE)





(a) Turn the engine switch off.
(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(c) Disconnect the No. 2 floor wire connector from the instrument panel wire.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:





(e) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(f) Measure the voltage according to the value(s) in the table below.
Standard Voltage:






NG -- REPLACE NO. 2 FLOOR WIRE
OK -- Continue to next step.
7. CHECK INSTRUMENT PANEL WIRE (NO. 2 FLOOR WIRE - NO. 3 INSTRUMENT PANEL WIRE)





(a) Turn the engine switch off.
(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(c) Disconnect the instrument panel wire connector from the No. 3 instrument panel wire.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:





(e) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(f) Measure the voltage according to the value(s) in the table below.
Standard Voltage:






NG -- REPLACE INSTRUMENT PANEL WIRE
OK -- REPLACE NO. 3 INSTRUMENT PANEL WIRE