Diagnostic Test

With the scan tool, record DTCs

Erase DTCs.

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

If possible, operate the liftgate several times.

With the scan tool, read DTCs.

Does the scan tool display B188F-POWER LIFTGATE CONTROL CIRCUIT 1 OPEN? 

Yes 

1. Go to  2).

No 

1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors for an intermittent condition.
2. Perform BODY VERIFICATION TEST .

Fig 1: Measuring Resistance Between Liftgate Open Driver Circuit And Liftgate Close Driver Circuit

Courtesy of CHRYSLER LLC

Turn the ignition off.

Disconnect the Power Liftgate Module C1 harness connector.

Measure the resistance between the (Q88) Liftgate Open Driver circuit and the (Q89) Liftgate Close Driver circuit.

Is the resistance approximately 4.3 ohms? 

No 

1. Go to  3).

Yes 

1. Replace the Power Liftgate Module in accordance with the service information.
2. Perform BODY VERIFICATION TEST .

Fig 2: Measuring Resistance Of Liftgate Open Driver Circuit

Courtesy of CHRYSLER LLC

Disconnect the Power Liftgate Drive Unit harness connector.

Measure the resistance of the (Q88) Liftgate Open Driver circuit between the Power Liftgate Module C1 harness connector and the Power Liftgate Drive Unit connector.

Is the resistance below 5.0 ohms? 

No 

1. Repair the (Q88) Liftgate Open Driver circuit for an open.
2. Perform BODY VERIFICATION TEST .

Yes 

1. Go to  4).

Fig 3: Measuring Resistance Of Liftgate Close Driver Circuit

Courtesy of CHRYSLER LLC

Measure the resistance of the (Q89) Liftgate Close Driver circuit between the Power Liftgate Module C1 harness connector and the Power Liftgate Drive Unit harness connector.

Is the resistance below 5.0 ohms? 

No 

1. Repair the (Q89) Liftgate Close Driver circuit for an open.
2. Perform BODY VERIFICATION TEST .

Yes 

1. Replace the Power Liftgate Drive Unit in accordance with the service information.
2. Perform BODY VERIFICATION TEST .