U0429-IMPLAUSIBLE DATA RECEIVED FROM SCM

For a complete wiring diagram Refer to Section 8W

When Monitored:
Continuously while the system is active.
Set Condition:
An error message has been received over the bus from the Steering Control Module (SCM).

Possible Causes

INTERMITTENT DTC

CAN BUS OPEN OR SHORTED CONDITION

STEERING CONTROL MODULE (SCM)

ENGINE CONTROL MODULE (ECM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

Diagnostic Test

1. ACTIVE DTC

NOTE: Diagnose all CAN B and C communication DTCs before continuing.

Ignition on, engine not running.
With a scan tool, view DTCs.

Is the status Active for this DTC?

Yes

Go To 2

No

Refer to the INTERMITTENT CONDITION Diagnostic Procedure. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

2. SCM COMMUNICATION RELATED DTC'S IN OTHER MODULES

With a scan tool check for SCM communication related DTCs in other modules on the CAN Bus.

Are there any SCM communication related DTCs in other modules on the CAN Bus at this time?

Yes

Replace and program the Steering Control Module (SCM) in accordance with the Service Information.

Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

No

Replace and program the Engine Control Module (ECM) in accordance with the Service Information.
Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)