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).