B1888

B1888 - Power Liftgate Pinch Sensor 1 Circuit Low






For a complete wiring diagram, refer to

• When Monitored: Whenever the power liftgate module is awake.

• Set Condition: The power liftgate module has detected the left liftgate pinch sensor circuit voltage is under 0.5 volts for over 20 seconds.






Test Step 1 - DTC Present

• With the scan tool, record DTCs and any liftgate inhibitors.

• Erase DTCs.

• Turn the ignition OFF, wait 10 seconds, then turn the ignition ON.

• Operate the liftgate several times.

• With the scan tool, check for DTCs.

Does the scan tool display B1888 - Power Liftgate Pinch Sensor 1 Circuit Low?

Yes

• Go to Test Step 2

No

• Using the wiring diagram/schematic as a guide, inspect the wiring and connectors for an intermittent condition.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior

Test Step 2 - Left Pinch Sensor Short






• Disconnect the left liftgate pinch sensor harness connector.

• Erase DTCs.

• Turn the ignition OFF, wait 10 seconds, then turn the ignition ON.

• With the scan tool, check for DTCs.

Does the scan tool display B1888 - Power Liftgate Pinch Sensor 1 Circuit Low?

Yes

• Go to Test Step 3

No

• Replace the left liftgate pinch sensor.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior

Test Step 3 - Check the Left Pinch Sensor Signal for a Short to Ground






• Turn the ignition OFF.

• Disconnect the power liftgate module C2 harness connector.

• Measure the resistance between ground and the left pinch sensor signal harness circuit.

Is the resistance less than 10k ohms?

No

• Replace the power liftgate module.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior

Yes

• Repair the left pinch sensor signal circuit for a short to ground.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior