Tests AH: The Power Liftgate Does Not Operate Correctly - Does Not Stop/Reverse When Obstacle Is Present

PINPOINT TEST AH: THE POWER LIFTGATE DOES NOT OPERATE CORRECTLY - DOES NOT STOP/REVERSE WHEN OBSTACLE IS PRESENT

AH1-AH3:

AH3-AH4:

AH5-AH7:

Normal Operation
When the power liftgate (PLG) moves in the close direction, the PLG module monitors the pinch strips and optical sensor for obstacle detection. The PLG module uses a 5-volt reference signal on circuit 1966 (LB/BK) and a return signal on circuit 1967 (GY/OG) for the left pinch strip. The PLG module uses a 5-volt reference signal on circuit 1965 (VT) and a return signal on circuit 1967 (GY/OG) for the right pinch strip. The right and left pinch strip return signal circuits are spliced together.

Possible Causes
- PLG module DTC B2931 optical sensor 1 short to battery or open
- PLG module DTC B2932 optical sensor 1 short to ground
- PLG module DTC B2933 optical sensor 2 short to battery or open
- PLG module DTC B2934 optical sensor 2 short to ground
- Circuit 1968 (YE), 1969 (WH/YE) or 1970 (RD/LB) open, short to voltage or short to ground
- Circuit 1971 (LB/OG) open
- Optical sensor
- PLG module