Test 28A - Diagnosing Courtesy Light Circuit
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.
- Using DRB-II, actuate courtesy lights. If courtesy lights cycle on and off, go to TEST 29A. If courtesy lights do not cycle on and off, go to next step.
- Access left pod switch Black connector. Using DRB-II in voltmeter mode, measure voltage of fused battery feed circuit at left pod switch Black connector terminal No. 4 (Pink wire).
- If voltage is more than 10 volts, go to step 5). If voltage is less than 10 volts, remove and inspect fuse No. 3 in fuse block. If fuse is blown, go to TEST 28B. If fuse is okay, measure voltage of battery feed circuit at fuse No. 3 (Black/Red wire).
- If voltage is more than 10 volts, repair open Black/Red wire. If voltage is less than 10 volts, repair Pink wire as necessary.
- With dimmer control lever in center position, measure voltage of courtesy light switched supply circuit at left pod switch Black connector terminal No. 5 (Pink/Light Blue wire). If voltage is less than 10 volts, replace left pod switch.
- If voltage is more than 10 volts, gain access to rear dome light terminals. Measure voltage of courtesy light switched supply circuit at dome light connector (Pink/Light Blue wire). If voltage is less than 10 volts, repair open Pink/Light Blue wire.
- If voltage is more than 10 volts, measure voltage of courtesy light control circuit at dome light connector (Yellow wire). If voltage is less than 10 volts, replace open bulb. If voltage is more than 10 volts, repair open Yellow wire.