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B1889






B1889-POWER LIFTGATE PINCH SENSOR 1 CIRCUIT HIGH





For a complete wiring diagram refer to Diagrams/Electrical

- When Monitored:

Whenever the Power Liftgate Module is awake.

- Set Condition:

The power liftgate module has detected the left pinch sensor circuit voltage is above 4.6 volts for over 10 seconds.





Diagnostic Test

1.DTC PRESENT

With the scan tool, record DTC's and any liftgate inhibitors.

Erase DTC's

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

Operate the liftgate several times.

With the scan tool, read DTCs.

Does the scan tool display B1889-POWER LIFTGATE PINCH SENSOR 1 CIRCUIT 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.(Q901) LOGIC GROUND OPEN





Turn the ignition off.

Remove the Liftgate trim panel.

Disconnect the Liftgate Left Pinch Sensor connector.

Measure the resistance between ground and the (Q901) Logic Ground circuit in the Liftgate Left Pinch Sensor connector.

Is the resistance below 5.0 ohms?

Yes

- Go To 3

No

- Repair the (Q901) Logic Ground circuit for an open.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

3.(Q75) LEFT PINCH SENSOR SIGNAL CIRCUIT OPEN





Turn the ignition on.

Measure the voltage between the (Q901) Logic Ground circuit and the (Q75 ) Left Pinch Sensor Signal circuit in the Left Pinch Sensor connector.

Is the voltage below 5.3 volts?

Yes

- Go To4

No

- Go to 5

4.(Q75) LEFT PINCH SENSOR SIGNAL WIRE OPEN





Turn the ignition off.

Disconnect the Power Liftgate Module C2 connector.

Measure the resistance of the Left Pinch Sensor Signal circuit between the Power Liftgate Module C2 connector and the Left Pinch Sensor connector.

Is the resistance below 5.0 ohms?

Yes

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

No

- Repair the (Q75) Left Pinch Sensor Signal wire for an open.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

5.(Q75) LEFT PINCH SENSOR SIGNAL SHORT TO VOLTAGE





Measure the voltage between the (Q901) Logic Ground circuit and the (Q75 ) Left Pinch Sensor Signal circuit in the Left Pinch Sensor connector.

Is the voltage above 5.2 volts?

No

- Replace the Left Pinch Sensor.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

Yes

- Repair the Left Pinch Sensor Signal wire for a short to battery
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test