B194F

B194F - Power Liftgate Temperature Sensor Circuit Performance






For a complete wiring diagram, refer to.

• When Monitored: Whenever the power liftgate is awake.

• Set Condition: The power liftgate module has detected the temperature it senses does not agree with the temperature that the PCM is sensing.






Test Step 1 - Check For DTCs

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

• 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 B194F - Power Liftgate Temperature Sensor Circuit Performance?

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 - Check For Other Pinch Sensor DTCs

• With the scan tool, read other power liftgate DTCs.

Are there any other pinch sensor DTCs?

Yes

• Repair the other liftgate pinch sensor DTCs before proceeding.

No

• Go to Test Step 3

Test Step 3 - Check the Liftgate Ambient Temperature Sensor






• The vehicle must be in a warm environment of approximately 70 degrees Fahrenheit for the results of this next step to be valid.

• Turn the ignition OFF.

• Open the liftgate.

• Allow the vehicle to stabilize in the warm environment for at least one hour.

• Disconnect the right liftgate pinch/temp sensor harness connector.

• Measure the resistance between the logic ground circuit and the right pinch sensor signal circuit in the right liftgate pinch/temp sensor (component side) connector.

• Graphic shows the harness side - component side is the mate connector.

Is the resistance between 11k and 13k ohms?

Yes

• Go to Test Step 4

No

• Replace the right liftgate pinch/temp sensor.

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

Test Step 4 - Right Pinch Sensor Signal Circuit Open






• Disconnect the power liftgate module C2 harness connector.

• Measure the resistance of the right pinch sensor signal circuit between the power liftgate module C2 connector and the right liftgate pinch/temp sensor connector.

Is the resistance less than 2.0 ohms?

Yes

• Go to Test Step 5.

No

• Repair the right pinch/temp sensor signal circuit for an open.

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

Test Step 5 - Right Pinch Sensor Signal Circuit Short to Ground






• Measure the resistance between ground and the right liftgate pinch temp sensor signal circuit.

Is the resistance less than 10k ohms?

No

• Go to Test Step 6

Yes

• Repair the right liftgate pinch/temp sensor signal circuit for a short to ground.

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

Test Step 6 - Logic Ground Open






• Measure the resistance of the logic ground circuit between the right liftgate pinch/temp sensor connector and the power liftgate C2 harness connector.

Is the resistance less than 2.0 ohms?

Yes

• Replace the power liftgate module.

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

No

• Repair the logic ground circuit for an open.

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