TEST
ACTION
APPLICABILITY
7
Disconnect the Power Liftgate Drive Unit connector.
Turn the ignition on.
Measure the voltage between ground and the Optical Sensor Supply circuit in the
harness connector.
Is the voltage above 4.7 volts?
All
Yes
→ Go To 8
No
→ Go To 10
8
Disconnect the Power Liftgate Module C2 connector.
Measure the resistance between ground and the Optical Sensor Signal 1 then Optical
Sensor Signal 2 circuits in the Power Liftgate C2 connector.
Is the resistance below 20000.0 ohms in either circuits?
All
Yes
→ Repair the Optical Sensor Signal 1 or 2 wire for a short to ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 9
9
Turn the ignition off.
Disconnect the Power Liftgate Drive Unit connector.
Disconnect the Power Liftgate Module C2 connector.
Measure the resistance of the Optical Sensor Signal 1 then 2 circuit between the
Power Liftgate Drive Unit connector and the Power Liftgate Module C2 connector.
Is the resistance below 2.0 ohms on both circuits?
All
Yes
→ Replace the Optical Sensor.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Repair the Optical Sensor Signal 1 or 2 wire for an open.
Perform BODY VERIFICATION TEST - VER 1.
10
Turn the ignition off.
Disconnect the Power Liftgate Drive Unit connector.
Disconnect the Power Liftgate Module C2 connector.
Measure the resistance between ground and the Liftgate Optical Sensor Supply
circuit.
Is the resistance below 10000.0 ohms?
All
Yes
→ Repair the Optical Sensor Supply wire for a short to Ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 11
11
Disconnect the Power Liftgate Drive Unit connector.
Disconnect the Power Liftgate Module C2 connector.
Measure the resistance of the Liftgate Optical Supply circuit between the Drive Unit
connector and the Module connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Replace the Power Liftgate Module.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Repair the Optical Sensor Supply wire for an open.
Perform BODY VERIFICATION TEST - VER 1.
841
POWER DOORS - LIFTGATE
INCOMPLETE POWER CLOSE - OPTICAL SIGNAL MISSING —
Continued