Interior Backlighting Not Working - Help!
#11
No power at the plug in any of the illumination circuits in the door, HVAC controls or radio? My thought is that it has to be BCM related, one of those modules has a short or a direct short.
If you want you can try this.
Unplug everything that does not light up. Disconnect the battery wait for 30-60 seconds. Reconnect the battery. See if you have power to any of those illumination circuits.
*If illumination power exists at the plug, then plug each one in until the other does not work. That would be where the fault is.
*If not illumination power exists at the plug, then it's a BCM or direct short.
I'm giving you the troubleshooting that I would do in your situation.
If you want you can try this.
Unplug everything that does not light up. Disconnect the battery wait for 30-60 seconds. Reconnect the battery. See if you have power to any of those illumination circuits.
*If illumination power exists at the plug, then plug each one in until the other does not work. That would be where the fault is.
*If not illumination power exists at the plug, then it's a BCM or direct short.
I'm giving you the troubleshooting that I would do in your situation.
#12
No power at the plug in any of the illumination circuits in the door, HVAC controls or radio? My thought is that it has to be BCM related, one of those modules has a short or a direct short.
If you want you can try this.
Unplug everything that does not light up. Disconnect the battery wait for 30-60 seconds. Reconnect the battery. See if you have power to any of those illumination circuits.
*If illumination power exists at the plug, then plug each one in until the other does not work. That would be where the fault is.
*If not illumination power exists at the plug, then it's a BCM or direct short.
I'm giving you the troubleshooting that I would do in your situation.
If you want you can try this.
Unplug everything that does not light up. Disconnect the battery wait for 30-60 seconds. Reconnect the battery. See if you have power to any of those illumination circuits.
*If illumination power exists at the plug, then plug each one in until the other does not work. That would be where the fault is.
*If not illumination power exists at the plug, then it's a BCM or direct short.
I'm giving you the troubleshooting that I would do in your situation.
#13
#14
#15
Thanks BruceS, but I've downloaded these long ago. Within those manuals, the diagrams for the systems that I'm not getting back-lighting with state that the supply wire is gray. After visual inspection of all of the systems that I'm having issues with and their corresponding harnesses, there is no gray wire contained within them. That is what prompted my starting this forum discussion.
I have not tried a new dimmer / light switch assembly yet. That’s next.
#16
#17
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