(a) Clear the DTCs See: Lighting and Horns/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes.
(b) Check for DTCs See: Lighting and Horns/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes.
OK:
DTCs are not output.
NG -- GO TO CAN COMMUNICATION SYSTEM See: Powertrain Management/Computers and Control Systems/Information
Bus/Testing and Inspection/Initial Inspection and Diagnostic Overview/CAN Communication System/How to Proceed With
Troubleshooting
OK -- USE SIMULATION METHOD TO CHECK See: Accessories and Optional Equipment/Antitheft and Alarm
Systems/Diagrams/Diagnostic Aids/How To Troubleshoot ECU Controlled Systems/How To Proceed With Troubleshooting
Up to 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 See: Steering and Suspension/Suspension/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes.
(b) Perform a road test.
(c) Check for DTC See: Steering and Suspension/Suspension/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes.
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