For 1990-2009 cars only
- Inspect Circuit Breakers number 6, 14, 15, and 16. If the Circuit Breaker is Open, Locate and Repair the cause of the circuit overload and Replace the Circuit Breaker.
- Inspect G105 to make certain that it is clean and tight.
- Inspect the inoperative lamp for an open or shorted filament. Replace the lamp if it is defective.
- Inspect the DRL OFF Relay, the DRL ON Relay, the Lighting Relay, Low/High Lighting Relay and the Panel Lamp/DRL Relay, to make certain that they are all tightly connected.
- Inspect for a broken (or partially broken) conductor inside the insulation which could cause a malfunction but prove GOOD in a system test for continuity or voltage These circuits may be intermittent or resistive, when loaded, and if possible, should be monitored for a voltage drop when the system is placed under load.
- Inspect for proper installation of aftermarket electronic equipment which might affect the operation of other equipment.
