U0423-IMPLAUSIBLE DATA RECEIVED FROM CLUSTER/CCN

For a complete wiring diagram Refer to Section 8W

Theory of Operation

The messages sent on the CAN bus are distinguished by an identifier (ID). Each CAN ID is defined to contain a certain number of bytes. The All Wheel Drive (AWD) Control Module verifies that it has received the proper number of bytes for each ID.

When Monitored:
Continuously with the ignition on, one valid CAN ID received at least once, and no U0002-CAN Bus Off Performance DTC present.
Set Condition:
When the AWD Control Module detects an incorrect CAN ID from the CLUSTER/CCN.

Possible Causes

TOTALLY INTEGRATED POWER MODULE (TIPM) NOT CONFIGURED CORRECTLY

CAN BUS DTC'S PRESENT

CLUSTER/CCN MODULE DTC'S PRESENT

ALL WHEEL DRIVE (AWD) CONTROL MODULE

Diagnostic Test

1. CHECK FOR TIPM CAN BUS DTCS

With the scan tool, read TIPM DTCs.

Are there any TIPM CAN BUS DTCs present?

Yes

(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) category and perform the appropriate symptom.
Perform AWD Control Module VERIFICATION TEST. (Refer to 3 - DIFFERENTIAL & DRIVELINE/ELECTRONICALLY CONTROLLED CLUTCH - STANDARD PROCEDURE).

Go To 2

2. CHECK IF CLUSTER/CCN DTCS ARE PRESENT

With the scan tool, read CLUSTER/CCN DTCs.

Are there any CLUSTER/CCN DTCs present?

Yes

(Refer to 8 - ELECTRICAL/INSTRUMENT CLUSTER - DIAGNOSIS AND TESTING) category and perform the appropriate symptom.
Perform AWD Control Module VERIFICATION TEST. (Refer to 3 - DIFFERENTIAL & DRIVELINE/ELECTRONICALLY CONTROLLED CLUTCH - STANDARD PROCEDURE).

Using the schematics as a guide, check the AWD Control Module pins, terminals, and connectors for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the AWD Control Module per the Service Information.
Perform AWD Control Module VERIFICATION TEST. (Refer to 3 - DIFFERENTIAL & DRIVELINE/ELECTRONICALLY CONTROLLED CLUTCH - STANDARD PROCEDURE).