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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 174 (Door System, Mirror System & Window System) >> Diagnostic Information and Procedures >> Power Sliding Door (PSD) Inoperative >> Test Description

Test Description

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.

The number below refers to the step number on the diagnostic table.

  1. 3:  This step helps to determine if the ground circuit to the enable/disable and open/close switches in the overhead console has failed. If this circuit opens between splice S388 and body ground G302, the left and right power sliding door (PSD) will only open and close properly while using the keyless entry transmitter. However, the left PSD could be closed, but not opened, using the left B-Pillar switch.
Power Sliding Door (PSD) Inoperative

Step Action Yes No
Schematic Reference: Power Sliding Door (PSD) Schematics 
Connector End View Reference: Power Door Systems Connector End Views 
DEFINITION: One or both power sliding doors are inoperative in one or both directions.
1 Did you perform the Diagnostic System Check - Vehicle? Go to Step 2  Go to Diagnostic System Check - Vehicle
2
  1. Place the transmission in the Park position.
  2. Turn ON the ignition.
  3. Place both enable switches to the ON position.
  4. Attempt to operate the power sliding doors (PSD) using each one of the following devices:
    • RH overhead console switch
    • LH overhead console switch
    • RH B-pillar switch
    • LH B-pillar switch
    • Remote keyless entry transmitter
Do the PSDs operate as described in the Description and Operation?		 Go to Testing for Intermittent Conditions and Poor Connections Go to Step 3 
3  Did the PSDs operate properly only when the remote transmitter was used? Go to Step 6  Go to Step 4 
4
  1. Gain access to the C1 harness connector of the appropriate power sliding door control module (PSDM).
  2. With a test lamp connected to a good ground, probe both battery positive voltage circuits of the harness connector.
Does the test lamp illuminate for both circuits?		 Go to Step 5  Go to Step 11 
5 With the test lamp connected to a good ground, probe the park/neutral position park signal circuit of the PSDM harness connector.
Does the test lamp illuminate?		 Go to Actuator Control Module - Power Sliding Door (PSD) Programming and Setup Go to Step 7 
6
  1. Turn OFF the ignition.
  2. Disconnect the harness connector of the PSD overhead console switch.
  3. Turn ON the ignition, with the engine OFF.
  4. With a test lamp connected to battery positive voltage, probe the ground circuit of the harness connector.
Does the test lamp illuminate?		 Go to Step 8  Go to Step 10 
7 Test the park/neutral position park signal circuit for an open or a short to ground. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 Go to Step 14  Go to Step 9 
8 Inspect for poor connections at the harness connector of the overhead switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?		 Go to Step 14  Go to Step 13 
9 Inspect for poor connections at the C2 harness connector of the body control module (BCM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?		 Go to Step 14  Go to Step 12 
10 Repair the ground circuit for an open or high resistance. Refer to Wiring Repairs and Connector Repairs .
Is the repair complete?		 Go to Step 14  -
11
IMPORTANT: If the circuit is open at the RH or LH PSD 40-amp fuse and the battery positive voltage circuit is not at fault, test the appropriate latch/unlatch motor/actuator control circuit for a short to ground prior to replacing the fuse.
Repair the battery positive voltage circuit for an open or a short to ground. Refer to Wiring Repairs and Connector Repairs .Is the repair complete?		 Go to Step 14  -
12 Replace the BCM. Refer to Control Module References for replacement, setup and programming.
Did you complete the replacement?		 Go to Step 14  -
13 Replace the overhead switch. Refer to Power Sliding Door (PSD) On/Off-Open/Close Overhead Switch Replacement .
Did you complete the replacement?		 Go to Step 14  -
14 Re-initialize the PSD and operate the system in order to verify the repair.
Did you correct the condition?		 System OK Go to Step 3 
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