Doors Do Not Unlock With Ignition Switch In RUN Position &

WARNING: This page is about a different car, the 1994 Cadillac Fleetwood. However, it is still accessible from the selected car via links, so may be relevant.

Transmission In Park

1) Set parking brake. Turn ignition switch to RUN position. Shift transmission to Drive. Backprobe with test light between Remote Control Door Lock Receiver/Theft Deterrent Module (RCDLR/TDM) terminal C16 (Light Green wire) and ground.

2) If test light lights, check for short to voltage in Light Green wire. If wire is okay, replace transmission position switch. If test light does not light, shift transmission to Park. Connect test light between RCDLR/TDM connector terminal C16 (Light Green wire) and ground.

3) If test light does not light, repair open circuit in Light Green wire. If wire is okay, replace transmission position switch. If test light lights, check for poor connection at RCDLR/TDM module. If connection is okay, replace RCDLR/TDM.