From 08/2009

SUSPENSION CONTROL: AIR SUSPENSION SYSTEM: U0100-U0122,U0124,U0140: Lost Communication with ECM / PCM "A"
U0140 - Lost Communication with Main Body ECU

DESCRIPTION

The suspension control ECU inputs signals from the skid control ECU, yaw rate sensor, ECM, TCM and main body ECU via CAN communication.





INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC

(a) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.

(b) Perform a road test.

(c) Check for DTC Reading and Clearing Diagnostic Trouble Codes.

Result:





HINT
If a CAN communication malfunction DTC and a related sensor malfunction DTC are output at the same time, the CAN communication malfunction must be repaired before troubleshooting the sensor malfunction DTC.

B -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting

A -- GO TO CAN COMMUNICATION SYSTEM How to Proceed With Troubleshooting