Gas

U0155-NO CLUSTER BUS MESSAGE

For complete wiring diagrams refer to Diagrams/Electrical.


- When Monitored:

Ignition key on and battery voltage greater than 10.4 volts.

- Set Condition:

No messages received from the MIC (Instrument Cluster) for more than 20 seconds. One Trip Fault. Three good trips to turn off the MIL.







Refer to Communications for diagnostic procedures and for further possible causes.


Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding

Diagnostic Test


1. ACTIVE DTC

Ignition on, engine not running.

With the scan tool, erase DTCs.

Cycle the ignition key on and off several times.

With the scan tool, select View DTCs.

Does the DTC reset?

Yes

- Go To 2

No

- Refer to the INTERMITTENT CONDITION Diagnostic Procedure. Intermittent Condition

2. COMMUNICATE WITH CLUSTER

With the scan tool, attempt to communicate with the Instrument cluster.

Can communication be established with the Instrument Cluster?

Yes

- Go To 3

No

- Refer to Communications for diagnostic procedures and for further possible causes.
- Perform POWERTRAIN VERIFICATION TEST. Powertrain Verification Test

3. INSTRUMENT CLUSTER OPERATION

Start the engine

Allow the engine to idle.

Is the correct engine speed display in the instrument cluster (Tach)?

Yes

- Replace and program the Powertrain Control Module.
- Perform POWERTRAIN VERIFICATION TEST. Powertrain Verification Test

No

- Refer to Instrument Cluster / Carrier and perform the appropriate symptom.
- Perform POWERTRAIN VERIFICATION TEST. Powertrain Verification Test