DTC P3177-864: Transmission Oil Pump Motor Coil Temperature Sensor Circuit High: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.
4. Read and record the DTCs and freeze frame data.
5. Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.
6. Clear DTCs and freeze frame data.

NEXT: Go to next step 

1. Select the following menu items: Powertrain / Hybrid Control / Data List / OPM Temperature.
2. Read the data list.

   Result

   Result	Proceed to
   32°F (0°C) (open or short to +B)	A
   Approximately equal to the actual temperature	B

B → See step   5 

A: Go to next step 

1. Turn the power switch off.
   Fig 1: Disconnecting Connectors A74 And E55 From Hybrid Vehicle Control ECU

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect connectors A74 and E55 from the hybrid vehicle control ECU.
3. Turn the power switch on (IG).
4. Measure the voltage according to the value(s) in the table below.

   Standard voltage

   Tester Connection	Switch Condition	Specified Condition
   E55-34 (TOPM) - A74-5 (E2) or Body ground	Power switch on (IG)	Below 1 V

   NOTE:

   Turning the power switch on (IG) with the hybrid vehicle control ECU connectors disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

5. Turn the power switch off.
6. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   E55-34 (TOPM) - A74-5 (E2)	68°F (20°C)	121 to 129.7 kΩ
   E55-34 (TOPM) - A74-5 (E2)	104°F (40°C)	50.49 to 55.01 kΩ
   E55-34 (TOPM) - A74-5 (E2)	176°F (80°C)	11.26 to 12.99 kΩ

NG → See step   4 

OK → See step   7 

1. Turn the power switch off.
   Fig 2: Locating Oil Pump Motor Temperature Sensor Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the oil pump motor temperature sensor connector.
3. Turn the power switch on (IG).
4. Measure the voltage according to the value(s) in the table below.
   Fig 3: Identifying E64 Oil Pump Motor Temperature Sensor Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard voltage

   Tester Connection	Switch Condition	Specified Condition
   E64-1 (OMT) - E64-2 (OMTG)	Power switch on (IG)	Below 1 V
   E64-2 (OMTG) - Body ground	Power switch on (IG)	Below 1 V

   NOTE:

   Turning the power switch on (IG) with the oil pump motor temperature sensor connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

5. Turn the power switch off.
6. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   E64-1 (OMT) - E64-2 (OMTG)	68°F (20°C)	121 to 129.7 kΩ
   E64-1 (OMT) - E64-2 (OMTG)	104°F (40°C)	50.49 to 55.01 kΩ
   E64-1 (OMT) - E64-2 (OMTG)	176°F (80°C)	11.26 to 12.99 kΩ

NG → See step   6 

OK → REPAIR OR REPLACE HARNESS OR CONNECTOR