Parking Brake Will Not Activate Brake Warning Light
- Disconnect parking brake warning switch connector. Connect fused jumper wire between Light Blue wire at parking brake warning switch connector and ground. Turn ignition on. If brake warning light does not come on, go to next step. If brake warning light does come on, check for poor connection at parking brake warning switch. If connection is okay, replace parking brake warning switch.
- Remove fused jumper wire. Connect fused jumper wire between instrument cluster connector Tan/White wire and ground. If brake warning light comes on, go to next step. If brake warning light does not come on, check for poor connection at instrument cluster connector. If connection is okay, replace instrument cluster.
- Connect test light between diode module Light Blue wire and ground. If test light comes on, repair open circuit in Light Blue wire. If test light does not come on, repair open circuit in Tan/White wire between instrument cluster and diode module. If circuit is okay, replace diode module.