B2500

DTC B2500 - Warning Lamp Failure

CIRCUIT DESCRIPTION
The SRS warning lamp is located on the cluster.
When the airbag system is normal, the SRI flashes for approx. 6 seconds after the ignition switch is turned ON, and then turns off automatically.
If there is a malfunction in the airbag system, the SRI lights up to inform the driver of the abnormality.
The SRSCM shall measure the voltage at the airbag SRI (Malfunction Indicator Lamp) output pin, both when the lamp is on and when the lamp is off, to detect whether the commanded state matches the actual state.

INSPECTION PROCEDURE

1. Check the fuse.

PREPARATION
1. Remove the fuse No. 1 and 12 from the junction block.
2. Inspect the state of fuse.
3. Replace if necessary.

2. Check SRS warning lamp circuit.

PREPARATION
1. Connect negative (-) terminal cable to the battery.
2. Turn ignition switch to ON.




CHECK
1. Measure voltage of harness side connector of SRSCM.

voltage: 10 - 16.5 V

NG: Check SRS warning light bulb/repair SRS warning light circuit.

OK: Go to next step.




2. Check SRS SRI (Service Reminder Indicator).

OK: SRS SRI ON

NG: If no fault is found in wiring or connector, replace the SRSCM.

OK: From the result of the above inspection, the malfunctioning part can now be considered normal.