FixVault

Test 60B & No Message - All BRAKELAMPS 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. Perform TEST VER-1 after each repair.
  1. Using scan tool in voltmeter mode, check voltage on fuse No. 21 (Red/White wire). See Figure. If voltage is more than 10 volts, go to step 4). If voltage is less than 10 volts, go to next step.
  2. Remove and inspect Power Distribution Center (PDC) headlamp system 40-amp fuse (second fuse from right below relays). See Figure. If fuse is okay, go to next step. If fuse is open, go to TEST 27C.
  3. Using scan tool in voltmeter mode, check voltage on PDC terminal No. 49 (bottom terminal of headlamp fuse, Black wire). If voltage is less than 10 volts, repair PDC as necessary. If voltage is more than 10 volts, repair open Red/White wire between PDC and fuse No. 21.
  4. Disconnect brakelamp switch connector. Check, clean and repair connections as needed. Check voltage on brakelamp switch connector terminal No. 5 (Pink/Dark Blue wire). If voltage is less than 10 volts, repair open Pink/Dark Blue wire between brakelamp switch connector and fuse No. 21. If voltage is more than 10 volts, go to next step.
  5. Connect jumper wire between brakelamp switch terminal No. 2 (White/Tan wire) and terminal No. 5 (Pink/Dark Blue wire). If brakelamps illuminate, replace brakelamp switch. If brakelamps do not illuminate, go to next step.
  6. Disconnect lamp outage module 14-pin connector. Check voltage on lamp outage module 14-pin connector terminal No. 8 (White/Tan wire). If voltage is more than 10 volts, replace lamp outage module. If voltage is less than 10 volts, repair open White/Tan wire between lamp outage module 14-pin connector and brakelamp switch connector.