Checking For Open-Circuits And Short-Circuits
Check the cable between the control module and the roof lamp unit. Check for a short-circuit to ground.
Remove the connector from the roof lamp module and measure between the connector and the upper electronic module (UEM) as follows.
UEM-0034 Left front reading lamp
Control module terminal #20 and roof lamp module terminal #3A.
UEM-0036 Right front reading lamp
Control module terminal #20 and roof lamp module terminal #4A.
Check the cable between the control module and the roof lamp unit. Check for an open-circuit.
UEM-0034 Left front reading lamp
Control module terminal #18 and roof lamp module terminal #3A.
UEM-0036 Right front reading lamp
Control module terminal #6 and roof lamp module terminal #4A.
Replace the cable if a fault is found.
If the cable is OK, try a new bulb in the roof lamp module.
Other information:
- For further information about signals and other values, see SIGNAL DESCRIPTION, UPPER ELECTRONIC MODULE (UEM)
- To connect the breakout box, see CONNECTING THE BREAKOUT BOX
- To access or replace the lamp, see INTERIOR LIGHTING, REPLACING
- see CHECKING WIRING AND TERMINALS .
- Continue
Refer to VERIFICATION