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NO.4 BRAKE SYSTEM WARNING LIGHT DOES NOT ILLUMINATE WITH IGNITION SWITCH ON.

BME040367650W04

4 | BRAKE system warning light does not illuminate with ignition switch ON.
[TROUBLESHOOTING HINTS] • BRAKE system warning light circuit open or shorted to ground.

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | INSPECT ABS WARNING LIGHT • Does ABS warning light illuminate? | Yes | Go to next step.
No | Go to symptom troubleshooting No.2.
2 | CHECK FOR SHORT TO GROUND IN ABS/TCS HU/CM • Disconnect ABS/TCS HU/CM connector and turn ignition switch ON. • Does BRAKE system warning light illuminate? | Yes | Replace ABS/TCS HU/CM (ground to short in ABS/TCS HU/CM).
No | Go to next step.
3 | INSPECT BRAKE SYSTEM WARNING LIGHT BULB • Remove instrument cluster. • Inspect BRAKE system warning light bulb. • Is it okay? | Yes | Go to next step.
No | Replace BRAKE system warning light bulb.
*4 | VERIFY WHETHER MALFUNCTION IS IN WIRING HARNESS (BETWEEN INSTRUMENT CLUSTER AND/TCS HU/CM FOR SHORT TO GROUND) OR INSTRUMENT CLUSTER • Is there continuity between instrument cluster connector (22-pin) terminal 2N and ground? | Yes | Repair wiring harness between instrument cluster and ABS/TCS HU/CM.
No | Replace instrument cluster (open or ground to short in instrument cluster).