VARIABLE GEAR RATIO STEERING SYSTEM Master Warning Light Malfunction

DESCRIPTION

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

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

A01GNUGE01

INSPECTION PROCEDURE

Tech Tips

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

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

PROCEDURE


  1. CHECK BATTERY


    1. Measure the battery voltage.

      Standard voltage
      Tester Connection Condition Specified Condition
      Battery terminal (+) - Battery terminal (-) Always 11 to 14 V

    NG

    REPLACE BATTERY

    OK

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


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. From the display on the tester, perform the "Active Test".

      Combination meter:
      Tester Display Test Part Control Range
      Master Warning Master warning (OFF/ON) Confirm that the vehicle is stopped and engine idling
      OK
      Indicator light turns on / turns off.

    NG

    REPLACE NO. 1 METER ECU SUB-ASSEMBLY Click here

    OK

  3. CHECK DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)


    1. Check for DTCs in the electronically controlled brake system Click here.

      Result
      Result Proceed to
      DTC is not output OK
      DTC is output NG

    NG

    GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM Click here

    OK

    REPLACE STEERING CONTROL ECU Click here