DTC P0746: Pressure Control Solenoid "A" Performance (Shift Solenoid Valve SL1); DTC P0771: Shift Solenoid "E" Performance (Shift Solenoid Valve SR) [08/2015 - 08/2017]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
5. Read the DTCs using the Techstream.
   RESULT
   
   

   Result	Proceed to
   Only P0746 and P0771 are output Only P0771 is output	A
   P0746, P0771 and other DTCs are output	B

   HINT: 

   If any other codes besides P0746 and P0771 are output, perform troubleshooting for those DTCs first.

Result: 

B 

GO TO DTC CHART 

(Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2015 - ] )

Result: 

A 

See step  2

HINT: 

Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.

1. Remove the test plug from the transmission case and connect SST.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   • SST: 09992-00095 
     1. 09992-00231
     2. 09992-00271
2. Connect the Techstream to the DLC3.
3. Start the engine and warm it up.
4. Measure the line pressure with SST.
5. Turn the Techstream on.
6. Enter the following menus: Powertrain / Engine and ECT / Active Test.
7. According to the display on the Techstream, perform the Active Test.
8. Measure the line pressure.
   ENGINE AND ECT
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Activate the Solenoid (SLT)*	Operate shift solenoid SLT and raise line pressure	ON or OFF HINT:  OFF: Line pressure up (when Active Test "Activate the Solenoid (SLT)" is performed, ECM commands SLT solenoid to turn OFF) ON: No action (normal operation)	[Vehicle Condition] Vehicle stopped. Engine idling.

   HINT: 

   *: Activate the Solenoid (SLT) in the Active Test is performed to check the line pressure changes by connecting SST to the automatic transmission, which is used in the Hydraulic Test (Refer to HYDRAULIC TEST [08/2015 - ] ) as well. Note that the pressure values in the Active Test and Hydraulic Test are different.

   OK

   The line pressure changes as specified when performing the Active Test.

Result: 

NG 

REPLACE SHIFT SOLENOID VALVE SLT 

(Refer to PROCEDURE - Step 4 )

Result: 

OK 

See step  3

1. Remove shift solenoid valve SL1.

   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
   1 - 2	20°C (68°F)	5.0 to 5.6 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 (+) with a 21 W bulb → Terminal 1 Battery negative (-) → Terminal 2	Valve moves and makes operating noise

   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Shift Solenoid Valve SL1)

Result: 

NG 

REPLACE SHIFT SOLENOID VALVE SL1 

(Refer to PROCEDURE - Step 5 )

Result: 

OK 

See step  4

1. Remove shift solenoid valve SR.

   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
   Shift solenoid valve SR connector terminal - Shift solenoid valve SR 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 SR connector Battery negative (-) → Shift solenoid valve SR body	Valve moves and makes operating noise

   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Shift Solenoid Valve SR)

Result: 

NG 

REPLACE SHIFT SOLENOID VALVE SR 

(Refer to PROCEDURE - Step 1 )

Result: 

OK 

See step  5

1. Check the transmission valve body assembly (Refer to DISASSEMBLY [08/2015 - ] ).

   OK

   There are no foreign objects on any valve.

Result: 

OK 

REPAIR OR REPLACE AUTOMATIC TRANSMISSION ASSEMBLY 

(Refer to REMOVAL [08/2015 - ] )

Result: 

NG 

REPAIR OR REPLACE TRANSMISSION VALVE BODY ASSEMBLY 

(Refer to REMOVAL [08/2015 - ] )