U0423

U0423-00-IMPLAUSIBLE DATA RECEIVED FROM CLUSTER/CCN

For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
Park Assist Module supply voltage between 9-16 volts. Ignition in Run/Start.

- Set Condition:
Ignition status = 7h





1. CHECK FOR ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, record and erase Park Assist Module DTCs.
3. Wait 30 seconds.
4. With the scan tool, read Park Assist Module DTCs.

Is this DTC active?

Yes

- Go To 2

No

- The condition that caused this code to set is not present at this time. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. INSTRUMENT CLUSTER IS ACTIVE ON THE CAN C INTERIOR BUS
1. With the scan tool, select ECU View.
2. Verify that the Instrument Cluster is active on the bus.

Is the Instrument Cluster active on the bus?

Yes

- Go To 3

No

- Perform the No Response from Cluster/CCN diagnostic procedure. No Response From CCN (Cluster)
- Perform the BODY VERIFICATION TEST. Body Verification Test.

3. DTCS STORED OR ACTIVE IN THE INSTRUMENT CLUSTER
1. Check for Ignition Switch DTCs in the Instrument Cluster.

Are any DTCs active or stored in the Instrument Cluster?

Yes

- Testing and InspectionPerform the appropriate diagnostic procedure.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 4

4. ACTIVE DTCS IN THE FCM
1. With the scan tool, select ECU View and select FCM.
2. With the scan tool, read active DTCs.

Are any Communication DTCs active in the FCM?

Yes

- Testing and InspectionPerform the appropriate diagnostic procedure.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Replace and program the Park Assist Module.
- Perform the BODY VERIFICATION TEST. Body Verification Test.