Test Mode Procedure [12/2017 - 10/2023]

HINT: 

• All test mode DTCs are stored at once when the test mode is entered. The DTC record is cleared if the inspection determines the ECU to be normal.
• Test mode DTCs do not indicate a malfunction.
• When the system is switched from test mode to normal mode, all the test mode DTCs are cleared.

1. Procedure to enter Test Mode.
   1. Turn the engine switch off.
   2. Connect the Techstream to the DLC3.
   3. Turn the engine switch on (IG).
   4. Turn the Techstream on.
   5. Enter the following menus: Chassis / VGRS / Utility / Check Mode.

      Chassis > VGRS > Utility 

      Tester Display
      Check Mode

2. Check the Test Mode display.
   1. Check that "VGRS TEST MODE" is displayed on the multi-information display when the system enters Test Mode.
3. Check the steering sensor signal and motor rotation signal.
   1. Start the engine.
   2. Rotate the steering wheel slowly from lock to lock.

      HINT: 

      • The state of the master warning light does not change.
      • When the steering signal is confirmed to be normal, the test mode DTC C15C4 is cleared.
      • When the steering sensor zero point calibration is performed and the motor rotation signal is confirmed to be normal, the test mode DTC C15C5 is cleared.
4. Ending test mode.
   1. Turn the engine switch off.
   2. After turning the engine switch on (IG), check that "VGRS TEST MODE" is not displayed on the multi-information display.

1. If a trouble code is output during the DTC check, check the trouble area indicated by the DTC. For details of each code, proceed to the DTC chart.

   DTC Code	Detection Item	Trouble Area	Proceed to
   C15C4	Steering signal indicating tire angle of 36° or more (to left or right) is input after entering test mode	Steering sensor VGRS ECU (front steering control ECU) Harness or connector	Refer to DTC C1595: Lost Communication with Steering Angle Sensor Module(SIL); DTC C15C4: Steering Signal Not Detected [12/2017 - 10/2023]
   C15C5	Steering signal indicating motor rotation angle of 36° or more (to left or right) is input after entering test mode	Steering actuator assembly VGRS ECU (front steering control ECU) Harness or connector	Refer to DTC C15A3: Motor Rotation Angle Not Detected; DTC C15C5: Motor Rotation Signal Not Detected [12/2017 - 10/2023]