Up to 08/2009

SUSPENSION CONTROL: AIR SUSPENSION SYSTEM: C1781: Suspension Control ECU Malfunction
C1781 - Suspension Control ECU Malfunction

DESCRIPTION

If a malfunction in the suspension control ECU is detected, DTC C1781 is output.





INSPECTION PROCEDURE

NOTICE:
- If DTC C1782 (Power Source Voltage Malfunction) is output at the same time, perform troubleshooting for C1782 first C1782.
- If the suspension control ECU is replaced, the vehicle height offset calibration and registration of vehicle identification information must be performed Calibration and Registration)
PROCEDURE

1. CHECK CAN COMMUNICATION SYSTEM

(a) Check the CAN communication system for any malfunctions Diagnosis System.

Result:





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

A -- REPLACE SUSPENSION CONTROL ECU