Diagnostic Test

WARNING: This page is about a different car, the 2007 Dodge Sprinter. However, it is still accessible from the selected car via links, so may be relevant.

1) TEST FOR INTERMITTENT CONDITION
Turn the ignition on.

NOTE: Ensure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts.

With the scan tool, select ECU view.

NOTE: A red X will be next to the module that is not communicating, indicating that the module is not active on the Bus network. A green check indicates that the module is active on the Bus network.

Does the scan tool display a red X next to the module?

Yes
1. Go To step 2).
No
1. The no response condition is not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring for chafed, pierced, pinched, and partially broken wires and the wiring harness connectors for broken, bent, pushed out, and corroded terminals.
2) GROUND CIRCUIT OPEN

Fig 1: Driver Door Module C1 And C2 Harness Connectors
Courtesy of CHRYSLER LLC

Turn the ignition off.

Disconnect the Driver Door Module C2 harness connector.

Using a 12-volt test light connected to 12-volts, check the ground circuit.

Does the test light illuminate brightly?

Yes
1. Go To step 3).
No
1. Repair the ground circuit for an open.
2. Perform BODY VERIFICATION TEST - VER 1 .
3) FUSED B(+) CIRCUIT OPEN OR SHORTED

Fig 2: Driver Door Module C2 Harness Connectors - Pin 1
Courtesy of CHRYSLER LLC

Using a 12-volt test light connected to ground, check the Fused B(+) circuit.

Does the test light illuminate brightly?

Yes
1. Go To step 4).
No
1. Repair the Fused B(+) circuit for an open or short.
2. Perform BODY VERIFICATION TEST - VER 1 .
4) CAN B BUS CIRCUITS OPEN

Fig 3: Driver Door Module C1 Harness Connectors - Pins 10 And 20
Courtesy of CHRYSLER LLC

NOTE: One open circuit will not cause this condition.

NOTE: Perform this test on all CAN B Bus circuits at the Driver Door Module. Use the wiring diagrams as a guide.

Turn the ignition on.

Measure the voltage between the CAN B Bus (-) circuit and ground.

Measure the voltage between the CAN B Bus (+) circuit and ground.

Is there any voltage present on either circuit?

Yes
1. Replace the Driver Door Module in accordance with the service information.
2. Perform BODY VERIFICATION TEST - VER 1 .
No
1. Inspect the connector for damage. Repair the CAN B Bus circuits for an open.
2. Perform BODY VERIFICATION TEST - VER 1 .