DTC P0791: Intermediate Shaft Speed Sensor "A" Circuit; DTC P0793: Intermediate Shaft Speed Sensor "A": Procedure

1. Remove the valve body assembly.
2. Make sure that the connector is properly connected, and check the speed sensor installation.
   Fig 1: Locating Speed Sensor Bolt

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   OK

   The installation bolts are tightened properly and there is no clearance between the sensor and transaxle case.

NG → See step   6 

OK: Go to next step 

1. Remove the TCM.
   Fig 2: Identifying TCM Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the speed sensor connector from the transmission wire.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Condition	Condition	Specified Condition
   3 (NCO) sensor side - 3 (NCO) TCM side	Always	Below 1 Ω
   4 (NCB) sensor side - 4 (NCB) TCM side	Always	Below 1 Ω
   3 (NCO) sensor side - Body ground	Always	10 kΩ or higher
   4 (NCB) sensor side - Body ground	Always	10 kΩ or higher
   3 (NCO) sensor side - All other terminals except 4 (NCB) sensor side	Always	10 kΩ or higher
   4 (NCB) sensor side - All other terminals except 3 (NCO) sensor side	Always	10 kΩ or higher

NG → See step   7 

OK: Go to next step 

1. Refer to REMOVAL .

NEXT: Go to next step 

1. Connect the Techstream to the DLC3.
2. Start the engine and turn the Techstream on.
3. Enter the following menus: / ECT / DTC / Clear.

   HINT: 

   Write down the currently output DTCs before clearing them.

4. Perform the monitor drive pattern. Refer to MONITOR DRIVE PATTERN .
5. Enter the following menus: / ECT / DTC.
6. Read the DTCs using the Techstream.

   Result

   Display (DTC Output)	Proceed to
   Only "P0791 or P0793" is output	A
   No output	B

B → END 

A → See step   5