Body - Erratic Liftgate/Liftgate Glass Locking/Unlocking
TSB SB07-11-S015Issue Date: SEPTEMBER 2007
Rear Liftgate Glass May Not Lock When Using Remote Keyless Entry (RKE)/Key Fob Transmitter/Door lock Switch, Liftgate Hatch Or liftgate May Lock/Unlock When Rear Liftgate Glass Button Depressed
Affected Vehicles:
2005-2008 Isuzu Ascender
Service Information
Condition:
Some customers may comment on one or more of the following conditions:
^ The rear liftgate glass may not lock when using the remote keyless entry (RKE) key fob transmitter or door lock switch unless the lock is pressed a second time.
^ The rear liftgate or glass locks but may be unlocked when the rear liftgate lock cylinder button is depressed.
^ The rear liftgate locks but the liftgate glass may not lock.
Possible Cause:
These conditions may be caused by one or all of the following:
^ The rear liftgate cylinder lock rod may be out of adjustment.
^ The wave washer on the liftgate lock cylinder may be out of position with the cup side down (1).
^ Excessive movement or slack in the lock rods at the liftgate bell crank assembly.
^ The liftgate lock cylinder pawl (1) may contact the rear liftgate glass latch when the lock cylinder button is depressed.
Correction:
Reposition liftgate lock cylinder wave washer and adjust lock rod. DO NOT replace the liftgate latch or actuator.
Service Procedure
IMPORTANT:
Do Not remove the rear liftgate lock cylinder from the vehicle to perform this repair.
Reposition the rear liftgate lock cylinder wave washer and adjust the lock rod using the steps below.
1. Verify the customer's condition.
2. Open the liftgate.
3. Remove the upper liftgate garnish molding. Refer to Liftgate Garnish Molding Replacement in the Service Manual.
4. Remove the rear liftgate trim panel. Refer to Liftgate Trim Panel Replacement in the Service Manual.
5. Remove the cylinder lock rod from the threaded lock rod retaining clip (1).
Tip
Place the tip of a screwdriver blade into the opening of the C-clip and slowly rotate the screwdriver to pry out the C-clip from the shaft. Then use needle-nose pliers to remove the C-clip.
6. Remove the C-clip (1) from the rear liftgate lock cylinder push button and remove the wave washer (2).
7. Install the wave washer with the cup side up (1).
8. Position the wave washer (1) with the curved edges of the wave spring parallel to the tabs (2) on the lock cylinder shaft.
9. Install the C-clip onto the shaft and in the slot using needle nose pliers. Then rotate the pawl several times to make sure the C-clip does not rotate. If the clip rotates then the clip is not fully seated.
IMPORTANT:
Use needle-noise pliers to slightly squeeze the C-clip back into shape. Make sure the clip seated, you should feel a snap and hear a audible click.
10. Position the lock cylinder pawl to the full clockwise position.
11. Pull up on the cylinder lock rod to remove any slack in the bell crank.
12. Install the cylinder lock rod into the threaded lock rod retaining clip while removing any slack from the lock rod linkage.
13. Close the lock rod retainer clip.
14. Close the liftgate assembly.
15. Open the liftgate glass while keeping the liftgate closed.
16. Use the key fob to cycle the liftgate to the lock and unlock position while inspecting the rear liftgate pawl. The lock cylinder pawl should have clearance between the latch as shown. If the pawl is contacting the latch readjust the cylinder lock rod.
17. Verify that the customer's condition has been corrected.
18. Install the rear liftgate trim panel. Refer to Liftgate Trim Panel Replacement in the Service Manual.
19. Install the upper liftgate garnish molding. Refer to Liftgate Garnish Molding Replacement in the Service Manual.
Warranty Claim Information
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