Dodge Nitro. Manual — part 871

Diagnostic Test

1) LIFTGATE LATCH INOPERATIVE

Fig. 47: Connecting Test Light Between (P304) Tailgate Lock Driver Circuit And (P406) Tailgate
Unlock Driver Circuit
Courtesy of CHRYSLER LLC

Turn the ignition off.

Disconnect the Tailgate Latch connector.

Connect a test light between the (P304) Tailgate Lock Driver circuit and the (P406) Tailgate Unlock
Driver circuit.

Close the front doors or trip the front door latches to the closed position.

Operate the door locks in both positions and observe the test light.

Does the test light illuminate brightly for approximately 300 ms. when the door locks are actuated?

Possible Causes

(P304) TAILGATE (LIFTGATE) LOCK DRIVER CIRCUIT OPEN
(P304) TAILGATE (LIFTGATE) LOCK DRIVER CIRCUIT SHORT TO GROUND
(P306) TAILGATE (LIFTGATE) UNLOCK DRIVER CIRCUIT OPEN
(P306) TAILGATE (LIFTGATE) UNLOCK DRIVER CIRCUIT SHORT TO GROUND
TAILGATE LATCH
TOTALLY INTEGRATED POWER MODULE (TIPM)

2007 Dodge Nitro R/T

2007 ACCESSORIES AND EQUIPMENT Power Locks - Electrical Diagnostics - Nitro

Yes

Replace the Liftgate Latch.

Perform BODY VERIFICATION TEST - VER 1 .

No

Go to step 2).

2) (P306) TAILGATE UNLOCK DRIVER CIRCUIT OPEN

Fig. 48: Measuring Resistance Of (P306) Tailgate Unlock Driver Circuit Between Latch Connector
And TIPM C5 Connector
Courtesy of CHRYSLER LLC

Disconnect the TIPM C5 connector.

Measure the resistance of the (P306) Tailgate Unlock Driver circuit between the Latch connector and the
TIPM C5 connector.

2007 Dodge Nitro R/T

2007 ACCESSORIES AND EQUIPMENT Power Locks - Electrical Diagnostics - Nitro

Is the resistance below 2.0 ohms?

No

Repair the (P306) Tailgate Unlock Driver circuit for an open.

Perform BODY VERIFICATION TEST - VER 1 .

Yes

Go to step 3).

3) (P306) TAILGATE UNLOCK DRIVER CIRCUIT SHORT TO GROUND

Fig. 49: Measuring Resistance Between Ground And (P306) Tailgate Unlock Driver Circuit
Courtesy of CHRYSLER LLC

Measure the resistance between Ground and the (P306) Tailgate Unlock Driver circuit.

Is the resistance below 1000.0 ohms?

Yes

Repair the (P306) Tailgate Unlock Driver circuit for a short to ground.

Perform BODY VERIFICATION TEST - VER 1 .

No

Go to step 4).

4) (P304) TAILGATE LOCK DRIVER CIRCUIT OPEN

2007 Dodge Nitro R/T

2007 ACCESSORIES AND EQUIPMENT Power Locks - Electrical Diagnostics - Nitro

Fig. 50: Measuring Resistance Of (P304) Tailgate Lock Driver Circuit Between TIPM C6
Connector And Tailgate Latch Connector
Courtesy of CHRYSLER LLC

Disconnect the TIPM C6 connector.

Measure the resistance of the (P304) Tailgate Lock Driver circuit between the TIPM C6 connector and
the Tailgate Latch connector.

Is the resistance below 2.0 ohms?

Yes

Go to step 5).

No

Repair the (P304) Tailgate Lock Driver circuit for an open.

Perform BODY VERIFICATION TEST - VER 1 .

2007 Dodge Nitro R/T

2007 ACCESSORIES AND EQUIPMENT Power Locks - Electrical Diagnostics - Nitro