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REPORT NUMBER - HOLVY03423 MAKE Holden | MODEL HOLDEN COMMODORE VY YEAR 2003 | ENGINE 6 Cylinders
Customer Complaint Interior light problems.
Problem Summary
Battery going flat with a current drain of 145 mA. Suspect the interior lights causing problems.
Diagnostic Sequence
The interior lights are powered up by a mini relay located in the under dash fuse and relay box.
The lid has a location map.
The BCM controls the operation of the interior light power relay and also monitors all the door switches.[1]
Fault Description
The BCM is programmed to turn the interior light power relay off after a period of time when the key has been removed and BCM goes to sleep.
This can vary but usually it is around 15 minutes.
If the relay is not turned off then there may be a problem with the BCM.
One way to physically check is if the vehicle has been in your possession for some time and it has been all locked up, go to it and open the cover and feel the relay [2] with your fingers. If it’s hot, it had not switched off.
Fault Solution If you wish to bypass that operation, remove the mini relay under the dash [3] and with a short bit of wire crimp two spade terminals and bridge out (30 & 87) the two larger terminals [4] and the interior lights will work as a standard vehicle but won't switch off if the doors are left open obviously.
Recommended Time
Labour time was 1 hour, taking into account research time, location of parts and actual time spent fixing the problem.
Tip: A current drain of 140 mA should not flatten a good battery unless left for about two weeks or only driven every few days for a very short time. If the vehicle is driven every day then you are looking at something else causing the problem. customer. A fuse (of correct type and size) does not blow just because it feels like it.
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