Diagnostic Test

WARNING: This page is about a different car, the 2006 Chrysler PT Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

1) TEST FOR INTERMITTENT CONDITION
Turn the ignition on.

With the scan tool, record and erase TIPM DTC's.

Cycle the ignition from on to off 3 times.

Turn the ignition on.

With the scan tool, read active TIPM DTC's.

Does the scan tool display this DTC as active?

Yes
1. Go To 2).
No
1. The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
2) CHECK THE (D55) CAN B BUS (+) CIRCUIT FOR A SHORT TO GROUND

Fig 1: MEASURING RESISTANCE BETWEEN GROUND AND CAN B BUS (+) CIRCUIT
Courtesy of DAIMLERCHRYSLER CORP.

Turn the ignition off.

Disconnect the Totally Integrated Power Module C3 harness connector.

Measure the resistance between ground and the (D55) CAN B Bus (+) circuit.

Is resistance below 1000.0 ohms?

Yes
1. Go To 3).
No
1. Inspect the wiring and connectors for damage or shorted circuits. If OK, replace the Totally Integrated Power Module in accordance with the service information.
2. Perform BODY VERIFICATION TEST - VER 1. (Refer to BODY VERIFICATION TEST - VER 1) .
3) (D55) CAN B BUS (+) CIRCUIT SHORTED TO GROUND

Fig 2: Measuring Resistance Between Ground And Can B Bus (+) Circuit
Courtesy of DAIMLERCHRYSLER CORP.

Measure the resistance between ground and the (D55) CAN B Bus (+) circuit.

While monitoring the ohmmeter, disconnect each CAN B Bus module one at a time.

NOTE: This is to determine if the short to ground is internal within a module or if the circuit is shorted.

NOTE: Disconnecting an in-line connector can eliminate a module or group of modules from the list of possible causes for this fault. Refer to the wring diagrams to assist in diagnosis.

Is resistance below 1000.0 ohms with all the CAN B Bus modules disconnected?

Yes
1. Repair the (D55) CAN B Bus (+) circuit for a short to ground.
2. Perform BODY VERIFICATION TEST - VER 1. (Refer to BODY VERIFICATION TEST - VER 1) .
No
1. Replace the module that when disconnected the short to ground was eliminated, in accordance with the service information.
2. Perform BODY VERIFICATION TEST - VER 1. (Refer to BODY VERIFICATION TEST - VER 1) .