Pinpoint Test G: The Power Liftgate Does Not Power Open (Power Close OK)

Power Liftgate

Pinpoint Test G: The Power Liftgate Does Not Power Open (Power Close OK)

Normal Operation

If the power liftgate is in the closed position and the conditions are correct, the Liftgate/Trunk Module (LTM) supplies voltage to the unlatch/cinching motor to unlatch the liftgate from the striker. Once the liftgate is unlatched, it supplies voltage to the motor to open the liftgate. As the liftgate is moving in the open direction, the LTM (Liftgate/Trunk Module) monitors the position sensor for door speed to detect obstacles.

This pinpoint test is intended to diagnose the following:

- Mechanical binding

- Power liftgate latch

- Liftgate alignment

PINPOINT TEST G : THE POWER LIFTGATE DOES NOT POWER OPEN (POWER CLOSE OK)

G1 RETRIEVE THE DTCs FROM THE LTM (Liftgate/Trunk Module)

- Use the recorded Liftgate/Trunk Module (LTM) DTCs from the self-test.

Are any LTM (Liftgate/Trunk Module) DTCs present?

Yes
REFER to the Liftgate/Trunk Module (LTM) DTC Chart Trunk / Liftgate.

No
GO to G2.

G2 CHECK THE MANUAL OPERATION OF THE LIFTGATE

- Ignition ON.

- Turn the power liftgate OFF (disable) from the message center.

- NOTE: A small amount of interference during a manual operation will be amplified during a power operation and may cause the liftgate to not power open.
Manually unlatch the liftgate.


Does the liftgate unlatch correctly?

Yes
GO to G3.

No
INSTALL a new latch.

G3 CHECK THE MANUAL OPERATION OF THE LIFTGATE

- While manually opening and closing the liftgate, check the liftgate for:
- liftgate/wedge alignment.

- strut operation (struts should push liftgate open when beyond half open).

- hinges (should move freely).


Does the liftgate open and close correctly?

Yes
GO to G4.

No
REPAIR as necessary. TEST the system for normal operation.

G4 CHECK THE LIFTGATE LATCH AND STRIKER ALIGNMENT

- NOTE: Make sure to inspect the underside of the striker bridge for witness marks.
Inspect the striker and latch for correct alignment.


Is the latch and striker aligned correctly?

Yes
GO to Pinpoint Test A Pinpoint Test A: The Power Liftgate Is Inoperative - Does Not Open Or Close.

No
ALIGN the liftgate and striker. REFER to Liftgate Alignment . TEST the system for normal operation.