Inspection Procedure

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / ECT / Trouble Codes.
5. Read the DTCs using the Techstream.

   Result 

   RESULT REFERENCE
   
   

   Display (DTC output)	Proceed to
   Only P0746 and P0873 are output	A
   P0746, P0873 and other DTCs are output	B

   HINT:

   If any other codes besides P0746 and P0873 are output, perform troubleshooting for those DTCs first.

B: GO TO DTC CHART  (See DIAGNOSTIC TROUBLE CODE CHART  )

A: Go to next step 

1. Measure the resistance of the wire harness side connector.

   Standard Resistance 

   RESISTANCE REFERENCE
   
   

   Tester Connection	Condition	Specified Condition
   E6-2S (TPS1) - Body ground	Always	10 kΩ or higher

   Fig 1: Identifying TCM E6 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   HINT:

   Do not disconnect the connectors of the TCM.

NG: Go to step  6

OK: Go to next step 

1. Remove the shift solenoid valve SL1 (see DISASSEMBLY  ).
2. Measure the resistance of the shift solenoid valve.

   Standard Resistance 

   RESISTANCE REFERENCE
   
   

   Tester Connection	Condition	Specified Condition
   Terminal 1 of the shift solenoid valve SL1 - terminal 2	20°C (68°F)	5.0 to 5.6 Ω

3. Connect the battery's positive (+) lead with a 21 W bulb to terminal 2 and the negative (-) lead to terminal 1 of the solenoid valve connector. Then check that the valve moves and makes an operating noise.
   Fig 2: Identifying Shift Solenoid Valve SL1

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK: Valve moves and makes operating noise. 

NG: REPLACE SHIFT SOLENOID VALVE SL1  (See DISASSEMBLY  )

OK: Go to next step 

1. Check the transmission valve body assembly (see DISASSEMBLY  ).

   OK: There are no foreign objects on any valve. 

NG: REPAIR OR REPLACE TRANSMISSION VALVE BODY ASSEMBLY  (See REMOVAL  )

OK: Go to next step 

1. Check the torque converter clutch assembly (see INSPECTION  ).

   OK: The torque converter clutch operates normally. 

NG: REPLACE TORQUE CONVERTER CLUTCH ASSEMBLY  (See REMOVAL  )

OK: REPAIR OR REPLACE AUTOMATIC TRANSMISSION ASSEMBLY  (See REMOVAL  )

1. Connect terminals TPS1 and E1 of the E5 and E6 TCM connectors.

   HINT:

   Before checking, do visual and contact pressure checks on the TCM connectors.

2. Connect the Techstream to the DLC3.
3. Turn the engine switch on (IG).
4. Turn the Techstream on.
5. Enter the following menus: Powertrain / ECT / Data List.
6. Read the value displayed on the Techstream.

   Result 

   RESULT REFERENCE
   
   

   Tester Display	Proceed to
   TPS 1 Switch OFF	A
   TPS 1 Switch ON	B

   Fig 3: TCM Connector Terminal Identification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

B: Go to step  8

A: Go to next step 

1. Replace the TCM (see REMOVAL  ).

NEXT: PERFORM A/T CODE REGISTRATION  (See REGISTRATION  )

1. Disconnect the E50 transmission wire connector.
2. Disconnect the E6 TCM connector.
3. Measure the resistance of the wire harness side connectors.

   Standard Resistance 

   RESISTANCE REFERENCE
   
   

   Tester Connection	Condition	Specified Condition
   E50-17 (TPS1) - E6-25 (TPS1)	Always	Below 1 Ω
   E50-17 (TPS1) or E6-25 (TPS1) - Body ground	Always	10 kΩ or higher

   Fig 4: Identifying E50 Transmission Wire Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the oil pressure switch connector.
2. Disconnect the E50 transmission wire connector.
3. Measure the resistance of the transmission wire.

   Standard Resistance 

   RESISTANCE REFERENCE
   
   

   Tester Connection	Condition	Specified Condition
   Oil pressure switch connector-17 (TPS1)	Always	Below 1 Ω
   Oil pressure switch connector or 17 (TPS1) - Body ground	Always	10 kΩ or higher

   Fig 5: Identifying Oil Pressure Switch Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE TRANSMISSION WIRE  (See REMOVAL  )

OK: REPLACE OIL PRESSURE SWITCH  (See DISASSEMBLY  )