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 power switch is turned from OFF to ON (IG), the SRS warning light illuminates. If the SRS is normal, the SRS warning light turns off automatically after approximately 6 seconds. If there is a malfunction in the SRS, the SRS warning light remains illuminated even after approximately 6 seconds have passed. When terminals TC and CG of the DLC3 are connected, the DTCs are communicated through SRS warning light blinking patterns.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT BATTERY
(a) Measure the voltage of the battery.
Standard voltage:
11 to 14 V
NG -- RECHARGE OR REPLACE BATTERY
OK -- Continue to next step.

2. CHECK CONNECTION OF CONNECTOR
(a) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(b) Check that the connector is properly connected to the center airbag sensor.
OK:
Connector is connected.
NG -- CONNECT CONNECTOR
OK -- Continue to next step.

3. PREPARE FOR INSPECTION
CAUTION: Be sure to perform the following procedures before troubleshooting to avoid unexpected airbag deployment.
(a) Disconnect the connector from the center airbag sensor.
(b) Disconnect the connector from the steering pad connector.
NEXT -- Continue to next step.

4. CHECK CENTER AIRBAG SENSOR ASSEMBLY




(a) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(b) Turn the power switch ON (IG).
(c) Measure the voltage and resistance of the wire harness side connector.
Standard voltage:






Standard resistance:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.

5. CHECK COMBINATION METER ASSEMBLY (POWER SOURCE)




(a) Disconnect the C10 meter connector.
(b) Turn the power switch ON (IG).
(c) Measure the voltage of the wire harness side connector.
Standard voltage:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.

6. CHECK WIRE HARNESS (CENTER AIRBAG SENSOR - COMBINATION METER)




(a) Disconnect the A18 sensor connector.
(b) Disconnect the C10 meter connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.

7. CHECK SRS WARNING LIGHT (OPERATION)
(a) Disconnect the A18 ECU connector with the C10 meter connector connected.
(b) Turn the power switch ON (IG).
(c) Check that the warning light illuminates for 6 seconds after turning the power switch ON (IG).
OK:
Warning light illuminates for 6 seconds after turning power switch ON (IG).
NG -- REPLACE COMBINATION METER ASSEMBLY
OK -- Continue to next step.

8. CHECK CENTER AIRBAG SENSOR ASSEMBLY




(a) Disconnect the A18 sensor connector.
(b) Turn the power switch ON (IG).
(c) Measure the voltage of the wire harness side connector.
Standard voltage:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.

9. REPLACE CENTER AIRBAG SENSOR ASSEMBLY
(a) Replace the center airbag sensor.
(b) Check that the SRS warning light illuminates normally.
OK:
SRS warning light illuminates normally.
NG -- REPLACE COMBINATION METER ASSEMBLY
OK -- END