Test 49B - Repairing Body Controller Ignition Power Supply
NOTE:
For connector terminal identification, see CONNECTOR IDENTIFICATION. For wiring diagrams, see WIRING DIAGRAMS
article in the ENGINE PERFORMANCE Section. Perform TEST VER - 1A after each repair.
CAUTION:
Always turn ignition switch to OFF position prior to disconnecting or connecting any module connector.
- Remove and inspect fuse No. 15. If fuse is blown, go to step 4). If fuse is okay, reinstall fuse No. 15. Ensure ignition switch is in ON position. Using DRB-II in voltmeter mode, check voltage of ignition feed circuit at fuse No. 15 (Dark Blue/White wire).
- If voltage is more than 10 volts, repair open Dark Blue wire between fuse No. 15 and body controller. If voltage is less than 10 volts, backprobe for voltage on ignition feed circuit at ignition switch connector terminal No. 2 (Dark Blue wire).
- If voltage is more than 10 volts, repair open Dark Blue wire between fuse No. 15 and ignition switch. If voltage is less than 10 volts, backprobe for voltage on battery feed circuit at ignition switch connector terminal No. 7 (Red wire) If voltage is more than 10 volts, replace ignition switch. If voltage is less than 10 volts, repair open Red wire.
- Turn ignition off. Disconnect instrument cluster connector. Using DRB-II in ohmmeter mode, check resistance of ignition feed circuit at fuse No. 15 (Dark Blue/White wire). If resistance is less than 5 ohms, repair short to ground in Dark Blue/White wire and replace fuse No. 15.
- If resistance is more than 5 ohms, reconnect instrument cluster connector. Check resistance of fused ignition feed circuit at fuse No. 15 (Dark Blue wire). If resistance is less than 5 ohms, replace instrument cluster and fuse No. 15.
- If resistance is more than 5 ohms, reconnect Blue body controller connector. Check resistance of fused ignition feed circuit at fuse No. 15 (Dark Blue wire). If resistance is less than 5 ohms, replace body controller and fuse No. 15. If resistance is more than 5 ohms, replace fuse No. 15.