C1783

SUSPENSION CONTROL: ACTIVE HEIGHT CONTROL SUSPENSION: C1783: Speed Signal Communication Error
C1783 - Speed Signal Communication Error

DESCRIPTION

The speed sensors monitor the speed of the wheels, and send appropriate speed signals to the suspension control ECU through the skid control ECU. If trouble occurs in either the front speed sensor or rear speed sensor, DTC (C1783) 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 Programming and Relearning.

PROCEDURE

1. CHECK FOR DTC (VEHICLE STABILITY CONTROL SYSTEM)

(a) Check if a speed sensor malfunction DTC is output under the vehicle stability control system Reading and Clearing Diagnostic Trouble Codes.

Result





B -- GO TO VEHICLE STABILITY CONTROL SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) Vehicle Stability Control 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