VARIABLE GEAR RATIO STEERING SYSTEM Master Warning Light Malfunction

DESCRIPTION

If the steering control ECU detects that the VGRS system has a malfunction, warning information is transmitted to the combination meter via CAN communication.

The combination meter will turn the master warning light on based on this information.

Warning information is transmitted via the following route:


Connecting terminals TC and CG of the DLC3 makes the master warning light blink and outputs DTCs.

WIRING DIAGRAM

A015B8GE01

INSPECTION PROCEDURE

Tech Tips

Check that there is no problem in CAN communication before performing the following procedure.

If there are any problems in CAN communication, first troubleshoot them and then proceed to the troubleshooting below.

PROCEDURE


  1. CHECK BATTERY


    1. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      Positive (+) battery terminal - negative (-) battery terminal Always 11 to 14 V

    NG

    RECHARGE OR REPLACE BATTERY

    OK

  2. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (COMBINATION METER)


    1. Select the Active Test, use the intelligent tester to generate a control command, and then check that the master warning light turns on/off.

      Combination Meter:
      Tester Display Test Part Control Range Diagnostic Note
      Master Warning Master warning light OFF/ON Confirm that the vehicle is stopped and the engine is running
      OK
      Indicator light turns on/off.
      Result

      Result

      		 Proceed to
      NG A
      OK (for LHD) B
      OK (for RHD) C

    B

    REPLACE STEERING CONTROL ECU Click here

    C

    REPLACE STEERING CONTROL ECU Click here

    A

    GO TO METER / GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) Click here