SRS Warning Light Remains On

SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: SRS Warning Light Remains ON

SRS Warning Light Remains ON

DESCRIPTION
The SRS warning light is located on the combination meter.
When the SRS is normal, the SRS warning light comes on for approximately 6 seconds after the ignition switch is turned from the LOCK position to the ON position, and then goes off automatically.
If there is a malfunction in the SRS, the SRS warning light comes on to inform the driver of a problem.
When terminals TC and CG of the DLC3 are connected, the DTCs are displayed by blinking the SRS warning light.

WIRING DIAGRAM





INSPECTION PROCEDURE
CAUTION: Be sure to perform the following procedures before troubleshooting to avoid unexpected airbag deployment.

1. Turn the ignition switch to the LOCK position.
2. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
3. Disconnect the connectors from the center airbag sensor.
4. Disconnect the connectors from the horn button.
5. Disconnect the connectors from the front passenger airbag.
6. Disconnect the connector from the No. 1 instrument panel airbag lower.
7. w/ Side and curtain shield airbag:
Disconnect the connector from the front seat airbag LH.
8. w/ Side and curtain shield airbag:
Disconnect the connector from the front seat airbag RH.
9. w/ Side and curtain shield airbag:
Disconnect the connector from the curtain shield airbag LH.
10. w/ Side and curtain shield airbag:
Disconnect the connector from the curtain shield airbag RH.
11. Disconnect the connector from the front seat outer belt LH.
12. Disconnect the connector from the front seat outer belt RH.

PROCEDURE

1. CHECK CONNECTION OF CONNECTORS
(a) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(b) Check that the connectors are properly connected to the center airbag sensor.
OK:
The connectors are connected.
NG -- CONNECT CONNECTORS
OK -- Continue to next step.
2. CHECK FOR DTC
(a) Connect the negative (-) terminal cable to the battery, and wait for at least 90 seconds.
(b) Check for DTCs DTC Check / Clear.
OK:
Normal system code is output.
NG -- REPAIR CIRCUIT INDICATED BY OUTPUT DTC
OK -- Continue to next step.
3. CHECK WIRE HARNESS (CENTER AIRBAG SENSOR ASSEMBLY - COMBINATION METER ASSEMBLY)





(a) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(b) Disconnect connector from the combination meter.
(c) Disconnect the A12 connector from the center airbag sensor.
(d) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE WIRE HARNESS (CENTER AIRBAG SENSOR ASSEMBLY - COMBINATION METER ASSEMBLY)
OK -- Continue to next step.
4. CHECK WIRE HARNESS (CENTER AIRBAG SENSOR ASSEMBLY - COMBINATION METER ASSEMBLY)





(a) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(b) Turn the ignition switch to the ON position.
(c) Measure the voltage according to the value(s) in the table below.
Standard voltage:






NG -- REPAIR OR REPLACE WIRE HARNESS (CENTER AIRBAG SENSOR ASSEMBLY - COMBINATION METER ASSEMBLY)
OK -- Continue to next step.
5. CHECK COMBINATION METER ASSEMBLY





(a) Turn the ignition switch to the LOCK position.
(b) Connect the C6 connector to the combination meter.
(c) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(d) Turn the ignition switch to the ON position.
(e) Measure the voltage according to the value(s) in the table below.
Standard voltage:






NG -- REPLACE COMBINATION METER ASSEMBLY
OK -- Continue to next step.
6. CHECK SRS WARNING LIGHT
(a) Turn the ignition switch to the LOCK position, and wait for at least 60 seconds.
(b) Turn the ignition switch to the ON position.
(c) Check the SRS warning light.

Result





A -- REPLACE COMBINATION METER ASSEMBLY
B -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY