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CONDITION POSSIBLE CAUSES CORRECTION FOG LAMPS FLASH 1. Poor lighting circuit Z3-ground. 1. Test for voltage drop across Z3-ground 2. High resistance in fog lamp circuit. 2. Test amperage draw of fog lamp circuit. 3. Faulty fog lamp switch. 3. Replace fog lamp switch. 4. Loose or corroded terminals or 4. Inspect and repair all connectors and FOG LAMPS DO NOT 1. Blown fuse for fog lamp. 1. Trace short and replace fuse. Refer to 2. No Z3-ground at fog lamps. 2. Repair circuit ground. Refer to Group 3. Faulty fog lamp switch. 3. Replace fog lamp switch. 4. Broken connector terminal or wire 4. Repair connector terminal or wire splice. 5. Defective or burned out bulb. 5. Replace bulb. FOG LAMPS ARE 1. Fog lamp/DRL* feed shorted to 1. Check wiring circuit from fog lamp/DRL* FOG LAMPS ARE 1. Fog lamp/DRL* fuse defective. 1. Trace short circuit and replace fuse. 2. Open circuit from fog lamp fuse to 2. Check wiring circuit from fog lamp/DRL* PARK LAMPS ARE 1. Park lamp feed is shorted. 1. Check wiring circuit from park lamp fuse PARK LAMPS ARE 1. Park lamp fuse is defective. 1. Trace short circuit and replace fuse. 2. Open circuit from park lamp fuse 2. Check wiring circuit from park lamp fuse *Canada vehicles use Daytime Running Lamps (DRL). DN LAMPS 8L - 5 DIAGNOSIS AND TESTING (Continued) |