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. Refer to INSTALLATION .
   Fig 1: Locating Speed Sensor Bolt

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK

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

NG → See step   8 

OK: Go to next step 

1. Disconnect the speed sensor connector from the transmission wire.
   Fig 2: Measuring Resistance Of Transmission Wire

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   3 (NCO) sensor side - A-3 (NCO) wiring harness connector side	Always	Below 1 Ω
   4 (NCB) sensor side - A-4 (NCB) wiring harness connector side	Always	Below 1 Ω
   3 (NCO) sensor side - Body ground and other terminals	Always	10 kΩ or higher
   4 (NCB) sensor side - Body ground and other terminals	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Transmission Wire)
   *b	Wiring Harness Connector Side
   *c	Sensor Side

NG → See step   9 

OK: Go to next step 

1. Disconnect the ECM connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   E26-118 (NCB) - E8-4 (NCB)	Always	Below 1 Ω
   E26-117 (NCO) - E8-3 (NCO)	Always	Below 1 Ω
   E26-118 (NCB) or E8-4 (NCB)- Body ground and other terminals	Always	10 kΩ or higher
   E26-117 (NCO) or E8-3 (NCO) - Body ground and other terminals	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the wiring harness connector.
2. Measure the resistance according to the value(s) in the table below.
   Fig 3: Measuring Resistance In Wiring Harness Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   E8-3 (NCO) - A-3 (NCO)	Always	Below 1 Ω
   E8-4 (NCB) - A-4 (NCB)	Always	Below 1 Ω
   E8-3 (NCO) - All other terminals	Always	10 kΩ or higher
   E8-4 (NCB) - All other terminals	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Transmission Wire)
   *b	ECM Side
   *c	Transmission Wire Side

NG → See step   10 

OK: Go to next step 

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. Clear the DTCs. Refer to DTC CHECK / 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: Powertrain / Engine and ECT / Trouble Codes.
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   7