Pinpoint Test E: Power Liftgate Pinch Strip Does Not Stop/Reverse The Liftgate

Power Liftgate

Pinpoint Test E: The Power Liftgate Does Not Operate Correctly - Pinch Strip Does Not Stop/Reverse the Liftgate

Normal Operation

When the power liftgate moves in the close direction, the Liftgate/Trunk Module (LTM) monitors the pinch strips and position sensor for obstacle detection. If the LTM (Liftgate/Trunk Module) detects an obstacle or a concern with a pinch strip, it either reverses the liftgate or does not allow power close. The LTM (Liftgate/Trunk Module) sends a voltage reference signal to both pinch strips. When a pinch strip is activated, it switches the voltage reference signal to ground. The right and left pinch strip return signal circuits are spliced together.

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors

- Pinch strip(s)

- LTM (Liftgate/Trunk Module)

PINPOINT TEST E : THE POWER LIFTGATE DOES NOT OPERATE CORRECTLY - PINCH STRIP DOES NOT STOP/REVERSE THE LIFTGATE

E1 RETRIEVE THE DTCs FROM THE LTM (Liftgate/Trunk Module)

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

Is DTC B2699, B2700, B2701 or B2702 present?

Yes
GO to Pinpoint Test F. Pinpoint Test F: Power Liftgate Does Not Power Close (Power Open OK)

No
GO to E2.

E2 CHECK THE LIFTGATE LEFT/RIGHT PINCH STRIP STATUS (LFT_PINCH / RT_PINCH) OPERATION

- Enter the following diagnostic mode on the scan tool: LTM (Liftgate/Trunk Module) DataLogger.

- Monitor the LTM (Liftgate/Trunk Module) PIDs LFT_PINCH and RT_PINCH while activating the left and right pinch strips.

Does the PID state change/agree with the pinch strip status?

Yes
GO to E3.

No
INSTALL a new left or right pinch strip switch. REFER to Pinch Strip Switch Service and Repair. TEST the system for normal operation.

E3 CHECK FOR CORRECT LTM (Liftgate/Trunk Module) OPERATION

- Disconnect all the LTM (Liftgate/Trunk Module) connectors.

- Check for:
- corrosion

- damaged pins

- pushed-out pins


- Connect all the LTM (Liftgate/Trunk Module) connectors and make sure they are seated correctly.

- Make sure the liftgate is fully closed.

- Operate the system and verify the concern is still present.

Is the concern still present?

Yes
INSTALL a new LTM (Liftgate/Trunk Module). REFER to Liftgate/Trunk Module (LTM) Service and Repair. TEST the system for normal operation.

No
The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector.