C1783

DTC C1783/83 Speed Signal Communication Error

DESCRIPTION

DTC Detection Condition:

The speed sensors monitors the speed of the wheels, and sends an 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.

Step 1-2:

Step 2(Continued)-3:

INSPECTION PROCEDURE

NOTE:
- Before performing troubleshooting, inspect the connectors of related circuits.
- Before replacing the suspension control ECU, perform all of the following again: 1) symptom simulation; 2) DTC inspection; and 3) intelligent tester or Techstream inspection (Data List or Active Test). If no malfunctions are found in other areas, replace the suspension control ECU.
- If the suspension control ECU or height control sensor is replaced, the vehicle height offset calibration must be performed.