ACTIVE STABILIZER SUSPENSION SYSTEM, Diagnostic DTC:C1946

DTC Code DTC Name
C1946 Malfunction in Signal from Steering Control ECU to Front Active Stabilizer Control ECU

DESCRIPTION

If the front active stabilizer control ECU receives a Variable Gear Ratio Steering (VGRS) system malfunction signal, DTC C1946 is output. If VGRS system related DTCs are output, perform a diagnosis for those DTCs. If no VGRS system DTCs are output, there may be a malfunction in the front active stabilizer control ECU.

DTC Code Detection Condition Trouble Area
C1946 Steering malfunction signal from VGRS system is input to front active stabilizer control ECU

  • VGRS system

  • Front active stabilizer control ECU

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK DTC (VGRS SYSTEM)


    1. Turn the power switch OFF.

    2. Connect the intelligent tester to the DLC3.

    3. Turn the power switch ON (READY) and the tester ON.

    4. Check that VGRS system DTCs are not output Click here.

      OK
      DTC is not output.

    NG

    GO TO VGRS SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) Click here

    OK

    REPLACE FRONT ACTIVE STABILIZER CONTROL ECU ASSEMBLY Click here