B1984–POWER LIFTGATE LATCH CONTROL 2 CIRCUIT LOW

For a complete wiring diagram Refer to Section 8W

When Monitored:
Anytime the Power Liftgate is performing a power cinch or release operation.
Set Condition:
When the power liftgate latch motor cinch or release output is pulled low prior to or during a latch cinch or release operation, this code will set.

Possible Causes

(Q84) LIFTGATE LATCH CINCH DRIVER CIRCUIT SHORT TO GROUND

(Q85) LIFTGATE LATCH RELEASE DRIVER CIRCUIT SHORT TO GROUND

(Q84) LIFTGATE LATCH CINCH DRIVER CIRCUIT SHORT TO THE (Q85) LIFTGATE LATCH RELEASE DRIVER CIRCUIT

POWER LIFTGATE LATCH ASSEMBLY

POWER LIFTGATE MODULE

1.DTC PRESENT

Does the scan tool display B1984–POWER LIFTGATE LATCH CONTROL 2 CIRCUIT LOW?

Yes

Using the wiring diagram/schematic as a guide, inspect the wiring and connectors for an intermittent condition. Operate the liftgate several times and check for any binding conditions in the latch assembly.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).

2.BINDING LIFTGATE LATCH

Were there any mechanical problems found?

Yes

Refer to Service information for the related symptom(s).
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).

3.CHECK THE (Q85) LIFTGATE LATCH RELEASE DRIVER CIRCUIT FOR A SHORT TO THE (Q901) LOGIC GROUND CIRCUIT

Is the resistance below 100.0 ohms?

Yes

4.CHECK THE (Q84) LIFTGATE LATCH CINCH DRIVER CIRCUIT FOR A SHORT TO THE (Q901) LOGIC GROUND CIRCUIT

Is the resistance below 100.0 ohms?

Yes

5.CHECK THE (Q84) LIFTGATE LATCH CINCH DRIVER CIRCUIT FOR A SHORT TO THE (Q85) LIFTGATE LATCH RELEASE DRIVER CIRCUIT

Is the resistance below 10000.0 ohms?

Yes

Repair the (Q84) Liftgate Latch Cinch Driver circuit for a short to the (Q85) Liftgate Latch Release Driver Circuit.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).

Replace the Power Liftgate Latch assembly in accordance with the service information.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).

6.CHECK THE (Q85) LIFTGATE LATCH RELEASE DRIVER CIRCUIT FOR A SHORT TO GROUND

Is the resistance below 10000.0 ohms?

Yes

Repair the (Q85) Liftgate Latch Release Driver circuit for a short to ground.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).

7.CHECK THE (Q84) LIFTGATE LATCH CINCH DRIVER CIRCUIT FOR A SHORT TO GROUND

Is the resistance below 10000.0 ohms?

Yes

Repair the (Q84) Liftgate Latch Cinch Driver circuit for a short to ground.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).

Replace the Power Liftgate Module in accordance with service information.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).