Test 63A - All TAILLAMPS Out
CAUTION:
Always turn ignition off prior to disconnecting or connecting any module connector.
NOTE:
For connector terminal identification, see CONNECTOR IDENTIFICATION . For wiring diagram, see WIRING DIAGRAMS - 3.0L
article in ENGINE PERFORMANCE. Perform TEST VER-1 after each repair.
- Turn ignition off. Remove and inspect fuse No. 10. See Figure. If fuse is okay, go to step 6). If fuse is open, gain access to relay center. Disconnect park lamp relay. See Figure. Check, clean and repair connections as needed. Go to next step.
- Using scan tool in ohmmeter mode, check resistance of park lamp relay connector terminal "B" (Pink/Red wire). If resistance is more than 5 ohms, go to next step. If resistance is less than 5 ohms, repair Pink/Red wire between park lamp relay connector and fuse No. 10. Replace fuse No. 10.
- Disconnect lamp outage module 14-pin connector. Check, clean and repair connections as needed. Check resistance of park lamp relay connector terminal "D" (Black/Yellow wire). If resistance is less than 5 ohms, repair Black/Yellow wire between relay center and lamp outage module 14-pin connector. If resistance is more than 5 ohms, go to next step.
- Disconnect left and right taillamp connectors. Check, clean and repair connections as needed. Check resistance of lamp outage module 14-pin connector terminal No. 11 (Black/Pink wire). If resistance is less than 5 ohms, repair Black/Pink wire between lamp outage module connector and taillamp connectors for short to ground. Replace fuse No. 10. If resistance is more than 5 ohms, go to next step.
- Using an external ohmmeter, check resistance across park lamp relay terminals "A" and "C". See Figure. If resistance is less than 10 ohms, park lamp relay and fuse No. 10. If resistance is more than 10 ohms, repair Black/Yellow wire and fuse No. 10.
- Disconnect left and right taillamp connectors. Inspect bulbs. Replace bulbs if defective. If bulbs are okay, go to next step.
- Using scan tool in voltmeter mode, check voltage on fuse block terminal No. 10 (Red/Yellow wire). If voltage is more than 10 volts, go to TEST 63B. If voltage is less than 10 volts, go to next step.
- Remove and inspect 40-amp park lamp fuse (third fuse from right on bottom row in power distribution center). See Fig 1. If fuse is open, go to step 10). If fuse is okay, go to next step.
- Using scan tool in voltmeter mode, check voltage on Power Distribution Center (PDC) 40-amp park lamp fuse terminal No. 49 (Black wire). If voltage is less than 10 volts, repair PDC as necessary. If voltage is more than 10 volts, repair open Black wire between PDC and fuse block.
- Using scan tool in ohmmeter mode, check resistance of PDC terminal No. 56 (Red/Yellow wire). If resistance is less than 5 ohms, repair Red/Yellow wire between PDC and fuse block for short to ground. If resistance is more than 5 ohms, replace 40-amp park lamp fuse.