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Symptom: *PARK LAMPS WILL NOT TURN OFF POSSIBLE CAUSES PARK LAMP SWITCH SENSE CIRCUIT SHORT TO GROUND PARK LAMP RELAY OUTPUT CIRCUIT SHORT TO VOLTAGE HEADLAMP SWITCH CENTRAL TIMER MODULE PARK LAMP RELAY TEST ACTION APPLICABILITY 1 Turn the ignition off. All Yes → No → Repair the Park Lamp Switch Sense Circuit for a short to ground. 2 Remove the Park Lamp Relay from the junction block. All Yes → No → Repair the Park Lamp Relay Output Circuit for a short to voltage. 3 Turn the Headlamp Switch to the OFF position. t, read the Headlamp Switch Voltage. Is the voltage approximately 4.5 volts? All Yes → No → Replace the Headlamp Switch. 4 Remove the Park Lamp Relay to begin this test. All Yes → Replace the Central Timer Module. No → Replace the Park Lamp Relay. 185 EXTERIOR LIGHTING |