Diagnostic Test

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

1) CHECK FOR ACTIVE DTCs
With the scan tool, read the active DTCs.

Cycle the ignition switch from off to on at least 5 times, leaving the ignition on for a minimum of 90 seconds per cycle.

With the scan tool, read the active DTCs.

Does the scan tool display this DTC as active?

Yes
1. Go to 2).
No
1. If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.
2) CHECK TIPM DTCs
With the scan tool, read TIPM active DTCs.

Does the scan tool display any CAN B BUS DTC's - ACTIVE?

Yes
1. Refer to DIAGNOSIS AND TESTING .
No
1. Go to 3).
3) (D55) CAN B BUS (+) CIRCUIT OPEN
Turn the ignition off.

Disconnect the negative battery cable.

Disconnect the SKREEM connector.

Disconnect the TIPM connector.

Measure the resistance of the (D55) CAN B Bus (+) circuit between the TIPM harness connector and the SKREEM harness connector.

Is the resistance below 2.0 ohms?

Yes
1. Go to 4).
No
1. Repair the (D55) CAN B Bus (+) circuit for an open.
2. Perform BODY VERIFICATION TEST - VER 1 .
4) (D54) CAN B BUS (-) CIRCUIT OPEN
Measure the resistance of the (D54) CAN B Bus (-) circuit between the TIPM harness connector and the SKREEM harness connector.

Is the resistance below 2.0 ohms?

Yes
1. Replace the SKREEM in accordance with the Service Information.
2. Perform BODY VERIFICATION TEST - VER 1 .
No
1. Repair the (D54) CAN B Bus (-) circuit for an open.
2. Perform BODY VERIFICATION TEST - VER 1 .