B1892

B1892-POWER LIFTGATE CONTROL CIRCUIT 2 HIGH





For a complete wiring diagram refer to Diagrams/Electrical

- When Monitored:

Whenever the Power Liftgate Module is performing a power open or close operation.

- Set Condition:

When the Power Liftgate Module senses voltage more than 9.5 volts on the (Q89) Liftgate Close Driver circuit prior to starting a power open or close cycle, this code will set.





Diagnostic Test

1.DTC PRESENT

With the scan tool, record DTC's.

Erase DTC's

Turn the ignition off, wait 10 seconds, then turn the ignition on.

If possible, operate the liftgate several times.

With the scan tool, read DTCs.

Does the scan tool display B1892-POWER LIFTGATE CONTROL CIRCUIT 2 HIGH?

Yes

- Go To 2

No

- Using the wiring diagram/schematic as a guide, inspect the wiring and connectors for an intermittent condition.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

2.(Q89) LIFTGATE CLOSE DRIVER CIRCUIT SHORT TO VOLTAGE





Disconnect the Power Liftgate Module C1 connector.

Disconnect the Power Liftgate Drive Unit connector.

Measure the voltage between the (Q89) Liftgate Close Driver circuit and ground.

Is there any voltage present?

Yes

- Repair the (Q89) Liftgate Close Driver circuit for a short to voltage.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Go To 3

3.(Q88) LIFTGATE OPEN DRIVER CIRCUIT SHORT TO VOLTAGE





Measure the voltage between the (Q88) Liftgate Open Driver circuit and ground.

Is there any voltage present?

Yes

- Repair the (Q88) Liftgate Open Driver circuit for a short to voltage.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Go To 4

4.(Q88) LIFTGATE OPEN DRIVER CIRCUIT SHORT TO (Q89) LIFTGATE CLOSE DRIVER CIRCUIT





Turn the ignition off.

Measure the resistance between the (Q88) Liftgate Open Driver circuit and the (Q89) Liftgate Close Driver circuit.

Is the resistance below 10000.0 ohms?

No

- Go To 5

Yes

- Repair the (Q88) Liftgate Open Driver circuit for a short to the (Q89) Liftgate Close Driver circuit.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

5.POWER LIFTGATE MODULE

With the scan tool under PLGM, monitor the PAWL SWITCH STATUS.

Using a screwdriver, click the latch to the first detent while observing the scan tool.

Unlatch the latch by pressing the handle switch and observe the scan tool for a change of state.

Repeat this step several times while moving the liftgate in different positions and wiggling the harness to check for an intermittent open circuit.

Did the scan tool show the switch state changing correctly every time?

Yes

- Check the Power Liftgate Module and Power Liftgate Latch harness and connectors for damage, and repair as necessary. If the Power Liftgate Module and Power Liftgate Latch harness and connectors are OK, replace the Power Liftgate Module.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Replace the Power Liftgate Latch.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test