DTC P0778: Pressure Control Solenoid "B" Electrical (Shift Solenoid Valve SL2) [08/2015 - 08/2019]: Procedure

1. Disconnect the B32 transmission wire connector.

   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
   11 (SL2+) - 3 (SL2-)	20°C (68°F)	5.0 to 5.6 Ω
   11 (SL2+) - Body ground	Always	10 kΩ or higher
   3 (SL2-) - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Transmission Wire)

Result: 

NG 

See step  3

Result: 

OK 

See step  2

1. Disconnect the B37 and B38 ECM connectors.

   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
   B37-31 (SL2+) - B38-34 (SL2-)	20°C (68°F)	5.0 to 5.6 Ω
   B37-31 (SL2+) - Body ground	Always	10 kΩ or higher
   B38-34 (SL2-) - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

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

Result: 

OK 

REPLACE ECM 

(Refer to REMOVAL [08/2015 - ] )

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

See step  3

Result: 

OK 

REPAIR OR REPLACE TRANSMISSION WIRE 

(Refer to REMOVAL [08/2015 - ] )

Result: 

NG 

REPLACE SHIFT SOLENOID VALVE SL2 

(Refer to PROCEDURE - Step 3 )