Cigarette Lighter: Testing and Inspection

WARNING: ON VEHICLES EQUIPPED WITH AIR-BAGS, REFER TO AIRBAG AND SEAT BELTS/AIR BAGS BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIR-BAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.

1. Remove the protective cap or the cigar lighter knob and element from the cigar lighter/power outlet receptacle shell. Check for continuity between the inside circumference of the cigar lighter/power outlet receptacle shell and a good ground. there should be continuity. If OK, go to Step 2. If not OK, go to Step 3.
2. Turn the ignition switch to the On position. Check for battery voltage at the insulated contact located at the back of the cigar lighter/power outlet receptacle shell. If OK, replace the faulty cigar lighter knob and element. If not OK, go to Step 3.
3. Turn the ignition switch to the Off position. Disconnect and isolate the battery negative cable. Remove the instrument panel accessory switch bezel. Check for continuity between the ground circuit cavity of the cigar lighter/power outlet wire harness connector and a good ground. There should be continuity. If OK, go to Step 4. If not OK, repair the open ground circuit to ground as required.
4. Connect the battery negative cable. Turn the ignition switch to the Accessory or On positions. Check for battery voltage at the accessory relay output circuit cavity of the cigar lighter/power outlet wire harness connector. If OK, replace the faulty accessory switch bezel unit. If not OK, refer to Accessory Relay in the Diagnosis and Testing for further diagnosis.