Electric Locks Completely Dead

[geocrasher]

Hi all,

I have an 88 Burb with electric locks- they're dead. There was a blown 10A fuse in place, and the fuse block calls for a 20A. I replaced it with a 20A fuse. No go. Still dead. Can anyone point me at a good source for troubleshooting info? Thank you very much!

 

[JoeR Jr]

The pink wire on the master switch should have power with the key on. that power comes from a 30 am self resetting circuit breaker. Not a fuse.

On Edit: I'm a dummy. I somehow interpreted that as Electric Windows. Not Locks.

Joe

 

[chengny]

Hi all,

I have an 88 Burb with electric locks- they're dead. There was a blown 10A fuse in place, and the fuse block calls for a 20A. I replaced it with a 20A fuse. No go. Still dead. Can anyone point me at a good source for troubleshooting info? Thank you very much!

First checks:

That the circuit breaker under the E socket column (far right) is good. That breaker protects all the circuits that are plugged into the E bank sockets.

Also make sure that the connector for the 60 ORN/BLK circuit is properly plugged in to one of the 3 sockets in the E column. The 60 ORN/BLK is the power supply for the P/L system:

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While you are under the dash, check that the grounding/mounting bolt for the door look relay is tight - and the connection between the bracket and body is clean. The relay grounded through it's casing and will not operate if the ground path is poor. It should be mounted up by the convenience center or accelerator pedal bracket:

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Diagnostic procedure to follow. But don't expect much - it's pretty lame - just one step.

Here is the description of operation and the diagnostic procedure for "None Of The Door Lock Motors Lock Or Unlock"

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[HoustonRunner]

While you are under the dash, check that the grounding/mounting bolt for the door look relay is tight - and the connection between the bracket and body is clean. The relay grounded through it's casing and will not operate if the ground path is poor. It should be mounted up by the convenience center or accelerator pedal bracket:

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Is there a trick to get access to that relay? I can see it above the convenience center, but the only way I can figure out how to get at it is if I remove the convenience center and associated brackets.

Is there easier access from above if I take off the instrument panel cover?

Thanks.