Crossfire 2006-2008

Locks & Lock Systems

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Power Door Locks



Diagnosis & Testing

The most reliable, efficient, and accurate means to diagnose the Power Lock System requires the use of a scan tool and the proper Diagnostic Procedures.


WARNING
REFER TO RESTRAINTS BEFORE ATTEMPTING ANY DOOR, SEAT, STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.

When trouble shooting problems with the Power Locks System, always verify that the power lock switch is functional. If the doors, rear liftgate, or fuel door do not lock/unlock with the power lock switch, the following system components should be analyzed:



Power door lock switch
 
Body Control Module (BCM)
 
Remote Keyless Entry Relay
 
Power Lock/Actuator assemblies
 
Sentry Key Remote Entry Module (SKREEM)
 
Central Locking Pump/Security System Module
 
Pneumatic supply lines
 

There are three main Electronic Control Modules which are interdependent on each other to complete lock/unlock commands, they are the BCM, SKREEM, and Central Locking Pump/Security System Module. These modules cannot be adjusted or repaired.

The Power Lock Actuators are controlled by pneumatic supply lines that transfer either vacuum or pressure from the Central Locking Pump/Security System Module to the component through distributors. When trouble shooting problems related to the pneumatic portion of the power lock system, a preliminary inspection should be performed to determine that the pneumatic supply lines and harness connectors are free from kink or blockage damage. If necessary, repairs to the pneumatic supply lines or harness connectors must be performed first before proceeding with additional Power Lock System diagnosis.

Supply Line/Actuator Testing

When trouble shooting a pneumatic supply line or actuator for the Power Lock System, perform the following steps:

Entire System
  1. Disconnect the pneumatic supply line connected to the Central Locking Pump/Security System Module.
  2.  
  3. Using a hand held vacuum pump, connect an appropriate rubber hose 2 inch (50 mm) long to the disconnected pneumatic supply line.
  4.  
  5. Apply 17.7 inch Hg (600 mbar) vacuum to the pneumatic supply line for 1 minute.
  6.  

If after 1 minute the vacuum loss is less than .9 inch Hg (30 mbar), the pneumatic supply lines and actuators are not the cause of the fault. If after 1 minute the vacuum loss is greater than .9 inch Hg (30 mbar), perform the Pneumatic Actuator Test.

Pneumatic Actuator Test
  1. Disconnect the pneumatic supply line (1) connected to the pneumatic actuator.
  2.  
  3. Using a hand held vacuum pump, connect an appropriate rubber hose 2 inch (50 mm) long to the disconnected pneumatic actuator.
  4.  
  5. Apply 17.7 inch Hg (600 mbar) vacuum to the pneumatic actuator for 1 minute.
  6.  

If after 1 minute the vacuum loss is less than .9 inch Hg (30 mbar), perform the Pneumatic Line Test. If after 1 minute the vacuum loss is greater than .9 inch Hg (30 mbar), replace the pneumatic actuator.

Pneumatic Line Test
  1. Block off one end of the pneumatic supply line and connect a hand held vacuum pump to the other end of the supply line.
  2.  
  3. Apply 8.9 in. Hg (300 mbar) vacuum to the pneumatic supply line for 1 minute.
  4.  

If after 1 minute the vacuum loss is 0 mbar (0 in. Hg), then check for pressure and vacuum at the Central Locking Pump/Security System Module. If after 1 minute the vacuum loss is greater than 0 mbar (0 in. Hg), replace the pneumatic supply line.

Removal & Installation
Door Lock Motor

The Central Locking Pump/Security System Module uses a combination of electrical wires and air pressure/vacuum lines. The Central Locking Pump/Security System Module is located in the right rear of the luggage compartment underneath the trunk floor covering. It is wrapped in a sound deadening material in order to operate quietly without disturbing the vehicle operator.

The Central Locking Pump/Security System Module controls the air and vacuum lines that handle the locking and unlocking of the vehicle doors, the liftgate, and the fuel tank door.

  1. Disconnect the negative battery cable.
  2.  
  3. Remove the trunk floor carpet.
  4.  
  5. Remove the right side interior trim panel.
  6.  
  7. Remove the upper right roof trim panel.
  8.  
  9. Remove the rear interior trim panel.
  10.  
  11. Remove the right half of the floor covering.
  12.  
  13. Remove the sound deadening foam material from the central locking pump/security system module.
  14.  
  15. Disconnect the air lines and the electrical harness from the central locking pump/security system module and remove the module.
  16.  

To install:

  1. Install the central locking pump/security system module into the trunk and connect the air lines and the electrical harness.
  2.  
  3. Install the central locking pump/security system module into sound deadening foam covering and slide it back into place.
  4.  
  5. Install the right half of the trunk floor covering.
  6.  
  7. Install the rear interior trim panel.
  8.  
  9. Install the right side interior trim panel.
  10.  
  11. Install the right upper trim panel.
  12.  
  13. Install the trunk floor carpet.
  14.  
  15. Connect the negative battery cable.
  16.  

Door Lock Switch

WARNING
Refer to restraints before attempting any door, seat, steering wheel, steering column, or instrument panel component diagnosis or service. Failure to take the proper precautions could result in accidental airbag deployment and possible personal injury.

  1. Disconnect the negative battery cable.
  2.  
  3. Remove the center console interior trim panel.
  4.  
  5. Disconnect the power lock switch and ESP harness connectors.
  6.  
  7. Press the locking tabs inward and remove the outer gang of switches.
  8.  
  9. Press the locking tabs inward and remove the power lock, hazard, and ESP switch from the trim panel.
  10.  

To install:

  1. Align the power lock switch with the center console interior trim panel and press together until the locking tabs engage fully.
  2.  
  3. Align the outer gang of switches over the power lock switch and press together until the locking tabs engage fully.
  4.  
  5. Connect the power lock switch harness connectors.
  6.  
  7. Install the trim panel on the center console.
  8.  
  9. Connect the negative battery cable.
  10.  

 
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