Originally Posted by Maxbumpo

Finally had some time to diagnose this issue, and used this method. Got to the pump, pulled the connector, and verified that each of the three locks (RF door, LF door, and tailgate) all gave the correct signals, which means the problem is in the pump circuitry.


I've also determined that all 124 models used the same pump, and I've got a spare somewhere in the garage.


I'd like to learn more about the circuit in the pump, and see if that is repairable.