Test Mode Procedure [09/2015 - ]

HINT: 

• When the system enters test mode, "VGRS TEST MODE" is displayed on the multi-information display.
• Before entering test mode, check and repair any malfunctions indicated by the present DTCs of the VGRS system.
• By switching from normal mode to test mode, the steering angle sensor can be read.
• When entering test mode, the steering control ECU sets all the test mode DTCs first.
• When the mode is switched from test mode to normal mode, all the test mode DTCs will be erased.

1. Procedure to enter Test Mode (using Techstream)
   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 / Signal Check.
2. Procedure to enter Test Mode (using SST check wire)
   1. Turn the engine switch off.
   2. Using SST, connect terminals 12 (TS) and 4 (CG) of the DLC3.
      • SST: 09843-18040 
      Fig 1: DLC3 Connector End View

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      *a	Front view of DLC3

   3. Turn the engine switch on (IG).
3. Check the Test Mode display.
   1. Check that "VGRS TEST MODE" is displayed on the multi-information display when the system enters Test Mode.
4. 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 C15C4/68 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 C15C5/69 is cleared.
5. Read Test Mode DTCs (using Techstream)
   1. Read the test mode DTCs by following the prompts on the Techstream screen.
6. Read Test Mode DTCs (using SST check wire)
   NOTE:

   Perform these procedures with the vehicle stopped.

   1. Turn the engine switch off.
   2. Using SST, connect terminals 12 (TS), 13 (TC) and 4 (CG) of the DLC3.
      • SST: 09843-18040 
      Fig 2: DLC3 Connector End View

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      *a	Front view of DLC3

   3. Turn the engine switch on (IG).
   4. Read the 2-digit test mode DTCs from the multi-information display.
7. Clear Test Mode DTCs (using Techstream)
   1. After completing test mode, disconnect the Techstream and turn the engine switch off.
8. Clear the test mode DTCs (using SST check wire).
   1. Turn the engine switch off.
   2. Disconnect SST from the DLC3.
      • SST: 09843-18040 
   3. Turn the engine switch on (IG).

      HINT: 

      If the engine switch is turned on (IG) with terminals 12 (TS) and 4 (CG) connected, the system remains in test mode.

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

   DTC Code	Detection Item	Trouble Area	Proceed to
   C15C4/68	A steering signal indicating a tire angle of 36° or more (to the left or right) is input after transfer to test mode*	Steering angle sensor Wire harness or connector Steering control ECU	Refer to DTC C1595/55: Lost Communication with Steering Angle Sensor Module; DTC C15C4/68: Steering Angle Signal (Test Mode DTC) [09/2015 - ]
   C15C5/69	A steering signal indicating a motor rotation angle of 36° or more (to the left or right) is input after transfer to test mode*	Wire harness or connector Steering actuator Steering control ECU	Refer to DTC C15A3/63: Actuator Malfunction; DTC C15C5/69: Motor Revolution Angle Signal (Test Mode DTC) [09/2015 - ]

   HINT: 

   *: A tire angle of 36° and a motor rotation angle of 36° correspond to the steering wheel angle respectively. The amount of change in tire angle and motor rotation angle is from when the mode is changed to test mode.