POWER DOOR LOCKS QUIT
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Joined: May 2018
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POWER DOOR LOCKS QUIT
Mystery here, need some help.
Scenario as follows:
Changed passenger rear door, and door locks no longer work. Worked up to that point. Can hear faint click under dash in the area of the wheel. Blew #106 fuse sometime. Took door back apart and checked wiring, tested door ajar switch for function with a meter, tested power actuator with power probe. Checked same on drivers rear door as well. Interior light does not come on when opening either back door. Interior lights come on when opening front doors ok.
Actuators make faint noise when lock/unlock is pushed.
Drivers door will unlock 1 out of 3 tries when locked manually.
Passenger front door does nothing lock wise, but dome light will com on.
Nothing will lock with the lock buttons or the fob, however the horn will sound with the fob.
Scan software sees all 4 doors on screen but will not make any work.
Anything else to check?
Scenario as follows:
Changed passenger rear door, and door locks no longer work. Worked up to that point. Can hear faint click under dash in the area of the wheel. Blew #106 fuse sometime. Took door back apart and checked wiring, tested door ajar switch for function with a meter, tested power actuator with power probe. Checked same on drivers rear door as well. Interior light does not come on when opening either back door. Interior lights come on when opening front doors ok.
Actuators make faint noise when lock/unlock is pushed.
Drivers door will unlock 1 out of 3 tries when locked manually.
Passenger front door does nothing lock wise, but dome light will com on.
Nothing will lock with the lock buttons or the fob, however the horn will sound with the fob.
Scan software sees all 4 doors on screen but will not make any work.
Anything else to check?
Fleet Owner
Joined: Apr 2008
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Could be a short in the lock/unlock solenoid in the new door. Did you try disconnecting the harness to the new door to see if the other 3 doors start working correctly?
Thread Starter
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New User
Joined: May 2018
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Yes.
Checked both lock actuators and door ajar switches in both rear doors.
Drivers door will unlock if it is locked manually, but only unlock.
Scan tool will not see the 2 rear doors at all.
Dome light or door ajar icon in dash will not light with either rear door open.
The schematic shows the actuators and ajar switches are daisy chained. Going to start checking grounds next.
No GEM module in this model, but there is a VSM in behind the radio, and can hear it click when the lock button is pushed.
PIA.
Checked both lock actuators and door ajar switches in both rear doors.
Drivers door will unlock if it is locked manually, but only unlock.
Scan tool will not see the 2 rear doors at all.
Dome light or door ajar icon in dash will not light with either rear door open.
The schematic shows the actuators and ajar switches are daisy chained. Going to start checking grounds next.
No GEM module in this model, but there is a VSM in behind the radio, and can hear it click when the lock button is pushed.
PIA.
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