C1781

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

DTC C1781 - Suspension Control ECU Malfunction

DESCRIPTION

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






INSPECTION PROCEDURE
NOTICE:
- Before performing troubleshooting, inspect the connectors of related circuits.
- If the suspension control ECU or height control sensor is replaced, the vehicle height offset calibration must be performed Testing and Inspection.

PROCEDURE

1. CHECK DTC
(a) Clear the DTC Air Suspension System.
(b) Perform a road test.
(c) Check for DTC Air Suspension System.

Result





B -- USE SIMULATION METHOD TO CHECK
A -- REPLACE SUSPENSION CONTROL ECU