Test Mode Procedure

HINT:

• When entering the test mode, all test mode DTCs are stored. During the inspection, if an ECU is determined to be normal, its corresponding test mode DTC is erased from memory.
• After returning to the normal mode, all test mode DTCs are erased.

1. TEST MODE OPERATION METHOD 
   1. Turn the engine switch off.
   2. Connect the intelligent tester (with CAN VIM) to the DLC3.
   3. Turn the engine switch on (IG) and press the intelligent tester main switch ON.
   4. Following the displays on the tester, select test mode and confirm that test mode is operating.
      NOTE:

      • The steering wheel must be in the neutral position.
      • A vehicle speed signal must not be present.

      HINT:

      After entering test mode, it is indicated on the multi-information display.

      Fig 1: Connecting Intelligent Tester To DLC3

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 2: Identifying Combination Meter Warning Light

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 3: Active Stabilizer Operation Flow Diagram (1 Of 2)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 4: Active Stabilizer Operation Flow Diagram (2 Of 2)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Table content screen A and screen B 

      REFERENCE VALUE
      
      

      Parameter	Measurement Item/ Range	Condition	Reference Value
      Param1	Front stabilizer twist angle: Min.: -2457.6° Max.: 2457.6°	When steering wheel is turned to right (clockwise) 90°	Approx. -7°
      		When steering wheel is turned to left (counterclockwise) 90°	Approx. 7°
      Param2	Rear stabilizer twist angle: Min.: -2457.6° Max.: 2457.6°	When steering wheel is turned to right (clockwise) 90°	Approx. 14°
      		When steering wheel is turned to left (counterclockwise) 90°	Approx. -14°

      HINT:

      • When the steering wheel is turned to the left, Param1 (front stabilizer twist angle) displays "+", and Param2 (rear stabilizer twist angle) displays
      • When the steering wheel is turned to the right, Param1 (front stabilizer twist angle) displays "-", and Param2 (rear stabilizer twist angle) displays
      Fig 5: Active Stabilizer Operation Flow Diagram

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   5. Confirm that the multi-information display turns off and that test mode finishes.
   6. If test mode is repeated but screen "C" still appears: The steering angle sensor may not be sending signals. Check the DTC and perform troubleshooting (see DTC CHECK / CLEAR ).
2. TEST MODE DTC CHART 
   DTC CHART
   
   

   DTC Code	Detection Item	Trouble Area
   C194F	Left/right steering operation complete	Test mode operation error Signal from steering sensor not received HINT:The warning light illuminates when a malfunction is detected
   C1950	Left/right steering malfunction signal input to front active stabilizer control ECU	Front active stabilizer control ECU Front active stabilizer control actuator Wire harness
   C1951	Left/right steering malfunction signal input to rear active stabilizer control ECU	Rear active stabilizer control ECU Rear active stabilizer control actuator Wire harness