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 power switch OFF.
   2. Connect the intelligent tester (with CAN VIM) to the DLC3.
      Fig 1: Connecting Intelligent Tester To DLC3

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   3. Turn the power 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 2: Identifying Multi-Information Display And Master Warning Light

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 3: Active Stabilizer Suspension System Checking Procedure Chart (Screen A)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 4: Active Stabilizer Suspension System Checking Procedure Chart (Screen B)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Table content screen A ( Fig 3 ) and screen B ( Fig 4 ) 

      MEASUREMENT ITEMS AND REFERENCE VALUE SPECIFICATION
      
      

      Parameter	Measurement Item/ Display (Range)	Condition	Reference Value
      Param 1	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°
      Param 2	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, Param 1 (front stabilizer twist angle) displays "+", and Param 2 (rear stabilizer twist angle) displays "-".
      • When the steering wheel is turned to the right, Param 1 (front stabilizer twist angle) displays "-", and Param 2 (rear stabilizer twist angle) displays "+".
        Fig 5: Active Stabilizer Suspension System Checking Procedure Chart

        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 
   TEST MODE DTC CHART
   
   

   DTC No.	Detection Item	Trouble Area	See
   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