Pinpoint Test K: The Power Liftgate Does Not Operate Correctly - Closes (With A Continuous Chime) Immediately After A Power Ope

Power Liftgate

Pinpoint Tests

Pinpoint Test K: The Power Liftgate Does Not Operate Correctly - Closes (With a Continuous Chime) Immediately After a Power Open

Refer to Wiring Diagram Set 109, Power Liftgate for schematic and connector information. Diagrams By Number

Normal Operation

After the Liftgate/Trunk Module (LTM) has performed a power open operation, power is removed from the clutch and drive motor. The LTM briefly continues to monitor the position of the liftgate. If excessive movement in the closed direction is detected, power is reapplied to the clutch and a continuous chime is initiated and remains on as the liftgate is automatically power closed.

If the excessive closing movement is detected on 11 successive power open requests, DTC B201A is set and power liftgate operation is disabled until the DTC is cleared.

- DTC 201A Power System Disabled Due to High Manual Closing Speed - This DTC is set when the LTM detects excessive closing movement on 11 successive power open requests. When DTC 201A is set, power liftgate operation is disabled until the DTC is cleared.

This pinpoint test is intended to diagnose the following:
- Excessive weight on the liftgate (for example: bike rack or snow and ice)
- Power liftgate full open position not learned correctly during power liftgate initialization procedure
- Liftgate assist cylinders
- LTM



PINPOINT TEST K: THE POWER LIFTGATE DOES NOT OPERATE CORRECTLY - CLOSES (WITH A CONTINUOUS CHIME) IMMEDIATELY AFTER A POWER OPEN

-------------------------------------------------
K1 RETRIEVE ALL CMDTCs IN ALL MODULES


- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Self Test - ALL CMDTCs.
- Is DTC B201A retrieved from the Liftgate/Trunk Module (LTM)?

Yes
CLEAR all CMDTCs. GO to K2.

No
GO to K2.

-------------------------------------------------
K2 CHECK THE LIFTGATE ASSIST CYLINDERS


- Verify there is no excessive weight on the liftgate (for example: bike rack or snow and ice).
- Turn the power liftgate OFF (disable) from the message center.
- Operate the liftgate manually to verify the liftgate assist cylinders hold the liftgate open.
- Did the liftgate assist cylinders hold the liftgate open correctly?

Yes
RE-INITIALIZE the power liftgate. REFER to Power Liftgate Initialization Programming and Relearning. TEST the system for normal operation.

If DTC B201A returns or power liftgate still closes (with a continuous chime) immediately after a power open, INSTALL a new LTM. REFER to Liftgate/Trunk Module (LTM) Service and Repair. INITIALIZE the power liftgate. REFER to Power Liftgate Initialization Programming and Relearning. TEST the system for normal operation.

No
INSTALL a new liftgate assist cylinders. RE-INITIALIZE the power liftgate. REFER to Power Liftgate Initialization Programming and Relearning. TEST the system for normal operation.

-------------------------------------------------