VARIABLE GEAR RATIO STEERING SYSTEM, Diagnostic DTC:C15A5/65

DTC Code DTC Name
C15A5/65 Actuator Malfunction

DESCRIPTION

If the steering control ECU detects a malfunction in the lock mechanism, it will turn the master warning light on, store the DTC C15A5/65, and stop VGRS operation.

DTC Code Detection Condition Trouble Area
C15A5/65 The steering control ECU detects that the LG terminal voltage is abnormal

  • Harness or connector

  • Steering actuator

  • Steering control ECU

WIRING DIAGRAM

A000TN2E17

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (STEERING CONTROL ECU - STEERING ACTUATOR)

    A000TOLE03
    *1 Rear view of wire harness connector: (to Steering Control ECU)
    *2 Front view of wire harness connector: (to Steering Actuator)
    *3 LV

    1. Disconnect the A41 steering control ECU connector.

    2. Disconnect the z16 steering actuator connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance
      Tester Connection Condition Specified Condition
      A41-3 (LV) - z16-4 (LV) Always Below 1 Ω
      A41-12 (LG) - z16-10 (LG)
      A41-3 (LV) - Body ground Always 10 kΩ or higher
      A41-12 (LG) - Body ground

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

      Standard voltage
      Tester Connection Switch Condition Specified Condition
      A41-3 (LV) - Body ground Power switch ON (IG) Below 1 V
      A41-12 (LG) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK HARNESS AND CONNECTOR (STEERING CONTROL ECU - STEERING ACTUATOR)


    1. Disconnect the A41 steering control ECU connector.

    2. A000U1ZE03
      *1 Rear view of wire harness connector: (to Steering Control ECU)
      *2 LV

      Reconnect the z16 steering actuator connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance
      Tester Connection Condition Specified Condition
      A41-3 (LV) - A41-12 (LG) Always 10 to 100 Ω
      A41-3 (LV) - Body ground Always 10 kΩ or higher
      A41-12 (LG) - Body ground

    OK

    REPLACE STEERING CONTROL ECU Click here

    NG

    REPLACE STEERING ACTUATOR Click here