C1785

SUSPENSION CONTROL: ACTIVE HEIGHT CONTROL SUSPENSION: C1785: Steering Control ECU Communication Error
C1785 - Steering Control ECU Communication Error

DESCRIPTION

The suspension control ECU receives signals from the steering control ECU via CAN communication.





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 Programming and Relearning.

PROCEDURE

1. CHECK DTC (VARIABLE GEAR RATIO STEERING SYSTEM)

(a) Check if a DTC is output from the variable gear ratio steering system Reading and Clearing Diagnostic Trouble Codes.

Result





B -- GO TO VARIABLE GEAR RATIO STEERING SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) Variable Gear Ratio Steering System
A -- Continue to next step.

2. CLEAR DTC

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

NEXT -- Continue to next step.

3. CHECK DTC

(a) Check for DTCs.

Result





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

A -- REPLACE SUSPENSION CONTROL ECU Removal