Question about 2003 Volvo XC90

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Fuel Filler Cover lock

The locking motor for the cover is not working correctly. If in the locked position (by hand) the motor unlocks correctly. This suggests the motor, wiring and any relevant fuse are ok. When the vehicle is locked normally the motor fails to operate thus the cover remains unlocked.

As an extra test I removed the locking motor assembly and connected it to a 3v battery. It operated correctly in both directions by changing the polarity.

Posted by on

  • electlen Oct 18, 2008

    No mechanical cable inside the vehicle, the pin of the locking motor acts through a hole in the hinged cover.

    The pin is quite free in both directions, as indicated by the movement achieved for as little as 3v from the battery (not sure what type of signal is provided by the control module hence used a low voltage the prove the point).

  • tony yeatman
    tony yeatman May 11, 2010

    do you have a cable inside vehicle



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You may have too much lock cover pressure on the release pin did you load test the release motor by putting your finger on it and see how much pressure it can push?not too much pressure though.Sorry earlier comment sent to wrong place

Posted on Oct 18, 2008

  • tony yeatman
    tony yeatman Oct 18, 2008

    Do you have a multi meter to test the current your getting at the motor when you activate it.Ihave not had the privelidge of working on your model and only trying to provide an answer from other types and models of cars in australia that i have worked on so please excuse the ignorance in some parts.



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Fuel door won't open on a 2008 g8 pontiac

Fuel Fill Door Description and Operation
The fuel door latch actuator shares the circuit with the driver door latch assembly. The body control module (BCM), upon receipt of a lock switch lock or unlock signal, will switch the appropriate door lock actuator, as well as a fuel filler door release actuator control circuits to battery positive voltage. The opposing side of the door lock and fuel filler door release actuators is connected to ground by the I/P fuse block through the other door lock actuator control circuit and the doors, along with the fuel filler door release, will lock or unlock as commanded.
Circuit/System Testing
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  3. ?‡'
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  4. Test for less than 1 ohm between the control circuit terminal 2 and ground.
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  6. Connect a test lamp between the control circuit terminal 1 and control circuit terminal 2.
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Component Testing
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Remove the rear compartment side trim (right) panel. Refer to
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I am not fameliar with your car type but in general:
1- try to remove door cover gently after unscrew the handles
2- if you get orginal motor then just disconnect wires (keep track of colors)
3- install new one

if you bought comercial motor for al types of car do as below:
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A- your door cover can positioned in it s location
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Power Door Lock Operation
The power door lock switches are integral components of the DDM and PDM. The switches are two position normally open rocker switches. When placed in either the lock or unlock positions, the switches provide a direct input to the DDM or PDM. The DDM or PDM monitors these inputs and sends a Class 2 message indicating a change in the switch's respective position. Modules which activate the power door lock motors receive the Class 2 message and activate the motor in the appropriate direction to lock or unlock the vehicle's doors and liftgate. The modules which activate the power lock motors are:
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Please let me know if you have questions, and thanks for using FixYa.

Removal & Installation
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Disarming the SIR System


  1. Turn the wheels to the straight-ahead position, then turn the ignition switch to LOCK .
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I think, I don´t understand your question ;)

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