Troubleshooting Hints

Perform before beginning System Diagnosis
1. Check GAGES Fuse by observing the "CHECK ENGINE" Lamp with Ignition Switch in "RUN" and engine off.
2. If BRAKE Indicator does not light for a particular condition, check suspect switch for battery voltage at CKT 33 terminal and a good ground circuit. If wires are good to suspect switch, replace suspect switch.

NOTE:
^ Check for a broken (or partially broken) wire inside of the insulation which could cause system failure but prove "GOOD" in a continuity/voltage check refer to Diagnostic Aids. Diagnostic Aids
^ Check for proper installation of aftermarket electronic equipment which may affect the integrity of other systemsrefer to Diagnostic Aids. Diagnostic Aids
^ Refer to System Diagnosis. System Diagnosis