B1950

B1950-POWER LIFTGATE TEMPERATURE SENSOR CIRCUIT LOW





For a complete wiring diagram Consult Diagrams/Electrical

- When Monitored:
Whenever the Power Liftgate Module is awake.

- Set Condition:
If the module senses a resistance below 1100 ohms on the Liftgate Temperature Sensor Signal circuit, this code will set. The normal range for the sensor is 1.2K to 382K ohms. At room temperature (20° C or 68° F) the resistance will be between 11.2K and 13.5K ohms.





Diagnostic Test

1. DTC PRESENT
With the scan tool, record and 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: B1950-POWER LIFTGATE TEMPERATURE SENSOR CIRCUIT LOW?

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. (G32) LIFTGATE TEMPERATURE SIGNAL CIRCUIT SHORT TO GROUND




Disconnect the Power Liftgate Module C2 connector.
Measure the resistance between ground and the (G32) liftgate Temperature Sensor Signal circuit.
Is the resistance below 5000.0 ohms?

Yes

- Repair the (G32) Liftgate Temperature Sensor Signal circuit for a short to ground.
- PERFORM BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Go To 3

3. (Q203) POSITION SENSOR SUPPLY CIRCUIT SHORT TO GROUND




Disconnect the Power Liftgate Module C1 harness connector.
Measure the resistance between ground and the (Q203) Position Sensor Supply circuit.
Is the resistance below 10000.0 ohms?

No

- Go To 4

Yes

- Repair the (Q203) Position Sensor Supply circuit for a short to ground.
- PERFORM BODY VERIFICATION TEST - VER 1. Body Verification Test

4. POWER LIFTGATE MODULE TEMPERATURE SENSE SHORTED




Measure the resistance of the (G32) liftgate Temperature Sensor Signal circuit to the (Q901) Ground circuit in the PLG Module C2 harness connector.
Is the resistance below 1100.0 ohms?

Yes

- Go To 5

No

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

5. (G32) LIFTGATE TEMPERATURE SENSOR SIGNAL WIRE SHORT TO THE (Q901) GROUND WIRE.




Disconnect the License Lamp (light bar) connector.
Measure the resistance of the (G32) liftgate Temperature Sensor Signal circuit to the (Q901) Ground circuit in the PLG C2 harness connector.
Is the resistance below 100K ohms

Yes

- Repair the (G32) Liftgate Temperature Sensor Signal wire for a short to the (Q901) Ground wire.
- PERFORM BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Replace the Liftgate Temperature Sensor (light bar).
- PERFORM BODY VERIFICATION TEST - VER 1. Body Verification Test