Pinpoint Test F: The Power Liftgate Does Not Operate Correctly - Pinch Strip Does Not Stop/Reverse the Liftgate
Power Liftgate
Pinpoint Test F: 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. The LTM (Liftgate/Trunk Module) uses a 5-volt reference signal on circuit CPR52 (YE/VT) and a return signal on circuit RPR52 (VT/GY) for the left pinch strip. The LTM (Liftgate/Trunk Module) uses a 5-volt reference signal on circuit CPR51 (YE/OG) and a return signal on circuit RPR52 (VT/GY) for the right pinch strip. 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 F : THE POWER LIFTGATE DOES NOT OPERATE CORRECTLY - PINCH STRIP DOES NOT STOP/REVERSE THE LIFTGATE
F1 RETRIEVE THE DTCs FROM THE LTM (Liftgate/Trunk Module)
- Use the recorded LTM (Liftgate/Trunk Module) DTCs from the continuous and LTM (Liftgate/Trunk Module) self-tests.
Is DTC B2699, B2700, B2701 or B2702 present?
Yes
GO to Pinpoint Test G. Pinpoint Test G: The Power Liftgate Does Not Power Close (Power Open OK)
No
GO to F2.
F2 CHECK THE LIFTGATE LEFT/RIGHT PINCH STRIP STATUS (LFT_PINCH/RT_PINCH) OPERATION
- Enter the following diagnostic mode on the scan tool: DataLogger- LTM (Liftgate/Trunk Module).
- 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 F3.
No
INSTALL a new left or right pinch strip switch. REFER to Pinch Strip Switch . TEST the system for normal operation.
F3 CHECK FOR CORRECT LTM (Liftgate/Trunk Module) OPERATION
- Disconnect all the LTM (Liftgate/Trunk Module) connectors.
- Check for:
- corrosion.
- 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) . REPEAT the LTM (Liftgate/Trunk Module) self-test.
No
The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the LTM (Liftgate/Trunk Module) self-test.