DTC P2769: Short in Torque Converter Clutch Solenoid Circuit (Shift Solenoid Valve SL); DTC P2770: Open in Torque Converter Clutch Solenoid Circuit (Shift Solenoid Valve SL) [12/2012 - ]: Procedure

1. Disconnect the ECM connector.

   Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

   *a	Front view of wire harness connector (to ECM)

2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   B77-3 (SL) - Body ground	20°C (68°F)	11 to 15 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE ECM. Refer to  REMOVAL [12/2012 - ] 

Result: 

NG 

See step  2

1. Disconnect the B78 wiring harness connector.
2. Disconnect the B77 ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   B78-6 (SL) - B77-3 (SL)	Always	Below 1 Ω
   B78-6 (SL) or B77-3 (SL) - Body ground and other terminals	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

1. Remove the wiring harness connector.

   Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

   *a	Component without harness connected (Transmission Wire)

2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A-6 (SL) - Body ground	20°C (68°F)	11 to 15 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE WIRING HARNESS CONNECTOR. Refer to  REMOVAL [12/2012 - 08/2017]  or  REMOVAL [08/2017 - ] 

Result: 

NG 

See step  4

1. Remove shift solenoid valve SL.

   Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

   *1	Shift Solenoid Valve SL

2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   Shift solenoid valve SL connector terminal - Shift solenoid valve SL body	20°C (68°F)	11 to 15 Ω

3. Apply 12 V battery voltage to the shift solenoid valve and check that the valve moves and makes an operating noise.

   OK

   Measurement Condition	Specified Condition
   Battery positive (+) → Shift solenoid valve SL connector Battery negative (-) → Shift solenoid valve SL body	Valve moves and makes an operating noise

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE TRANSMISSION WIRE. Refer to  REMOVAL [12/2012 - ] 

Result: 

NG 

REPLACE SHIFT SOLENOID VALVE SL. Refer to  DISASSEMBLY [12/2012 - ]