Inspection Procedure

HINT:

Read freeze frame data using hand-held tester or OBD II scan tool. Because freeze frame records the engine condition when a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, etc. at the time of the malfunction.

1. Check for open or short in harness and connector between select stroke sensor and transmission control ECR ( PROCEDURE  ). 
   1. NG: Repair or replace harness and connector. 
   2. OK: Go to next step 
2. Inspect select stroke sensor. 

   PREPARATION: 

   Remove the select stroke sensor.

   CHECK: 

   Check the voltage of the select stroke sensor.

   1. Connect 3 dry cell batteries (1.5 V) in series.
   2. Connect the battery positive (+) wire to terminal A and the battery negative (-) wire to terminal C.
   3. Measure the voltage between terminals C and B when moving the link.
   Fig 1: Measuring Voltage Between Terminal C And B Of Select Stroke Sensor

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK: 

   1. Voltage (Power source voltage at 4.5 V): 
   Voltage Output Table
   
   

   Sensor Angle (degree)	Terminal (C - B) Output Voltage (V)
   44.8	4.127-4.306
   135.5	0.185-0.364

   HINT:

   Formula when the power source voltage has changed.

   (4V less than or equal power source, less than or equal 6V)

   Voltage Output Table
   
   

   Sensor Angle (degree)	Output Voltage (V)
   44.8	Power source x (0.937 +/- 0.02)
   135.5	Power source x (0.061 +/- 0.02)

   1. NG: Replace select stroke sensor. 
   2. OK: Go to next step 
3. Perform initial learning of transmission control ECU (see  PRE-CHECK  ) 

   After replacing the transmission control ECU, check that the problem disappears.

   1. NG: Replace transmission control ECU. 
   2. OK: END.