Diagnostic Test

WARNING: This page is about a different car, the 2006 Dodge Magnum, 2006 Dodge Charger, and 2006 Chrysler 300. 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 DTC's.

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 DTC's.

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 FRONT CONTROL MODULE FOR U0019 DTC
With the scan tool, read Front Control Module active DTCs

Does the scan tool display U0019 CAN B BUS - ACTIVE?

Yes
1. Refer to DIAGNOSTIC CODE INDEX and perform the U0019 diagnostic procedure.
No
1. Go To 3).
3) (D55) CAN B BUS (+) CIRCUIT OPEN

Fig 1: Checking CAN B BUS (+) Circuit
Courtesy of DAIMLERCHRYSLER CORP.

Turn the ignition off.

Disconnect the Front Control Module C1 connector.

Turn the ignition on.

Measure the voltage of the (D55) CAN B Bus (+) circuit.

Is any voltage present on this circuit?

Yes
1. Go To 4).
No
1. Repair the (D55) CAN B Bus (+) circuit for an open.
2. Perform BODY VERIFICATION TEST - VER 1.(Refer to BODY VERIFICATION TEST - VER 1) .
4) (D54) CAN B BUS (-) CIRCUIT OPEN

Fig 2: Checking CAN B BUS (-) Circuit
Courtesy of DAIMLERCHRYSLER CORP.

Measure the voltage of the (D54) CAN B Bus (-) circuit.

Is any voltage present on this circuit?

Yes
1. Replace the Front Control Module in accordance with the service information.
2. Perform BODY VERIFICATION TEST - VER 1.(Refer to BODY VERIFICATION TEST - VER 1) .
No
1. Repair the (D54) CAN B Bus (-) circuit for an open.
2. Perform BODY VERIFICATION TEST - VER 1.(Refer to BODY VERIFICATION TEST - VER 1) .