Dtc C1783 Speed Signal Communication Error

Suspension. Land Cruiser. Urj200, 202 Grj200 Vdj200
Suspension Control. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

INSPECTION PROCEDURE

CHECK FOR DTC (VEHICLE STABILITY CONTROL SYSTEM)

CLEAR DTC

CHECK DTC

DTC 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.

DTC Code
Detection Condition
Trouble Area
C1783
A speed sensor circuit malfunction for 1 second or more.
  1. Vehicle stability control system
  2. Suspension control ECU

INSPECTION PROCEDURE

NOTICE:
  1. Before performing troubleshooting, inspect the connectors of related circuits.
  2. If the suspension control ECU or height control sensor is replaced, the vehicle height offset calibration must be performed (Click here).
1.CHECK FOR DTC (VEHICLE STABILITY CONTROL SYSTEM)

  1. Check if a speed sensor malfunction DTC is output under the vehicle stability control system (Click here).

    Result
    Result
    		Proceed to
    DTC is not output
    		A
    DTC is output
    		B



B
GO TO VEHICLE STABILITY CONTROL SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) (Click here)
A


2.CLEAR DTC

  1. Clear the DTCs (Click here).


NEXT


3.CHECK DTC

  1. Check for DTCs.

    Result
    Result
    		Proceed to
    DTC C1783 is output
    		A
    DTC C1783 is not output
    		B



B
USE SIMULATION METHOD TO CHECK (Click here)
A

REPLACE SUSPENSION CONTROL ECU (Click here)