Dtc P0771 Shift Solenoid E Performance (Shift Solenoid Valve Sr)

Transmission. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
U151F Automatic Transaxle. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

DESCRIPTION

MONITOR DESCRIPTION

INSPECTION PROCEDURE

CHECK OTHER DTCS OUTPUT (IN ADDITION TO DTC P0771)

INSPECT SHIFT SOLENOID VALVE SR

INSPECT TRANSMISSION VALVE BODY ASSEMBLY

INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY

DTC P0771 Shift Solenoid "E" Performance (Shift Solenoid Valve SR)


DESCRIPTION

The ECM uses signals from the vehicle speed sensor to detect the actual gear position (1st, 2nd, 3rd, 4th or 5th gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical problems of the shift solenoid valves, valve body or automatic transaxle (clutch, brake, gear, etc.).

DTC No.
DTC Detection Condition
Trouble Area
P0771
Gear required by the ECM does not match the actual gear when driving (2 trip detection logic)
  1. Shift solenoid valve SR remains open or closed
  2. Valve body is blocked
  3. Shift solenoid valve SR
  4. Automatic transaxle (clutch, brake, gear, etc.)

MONITOR DESCRIPTION

The ECM commands gear shifts by turning the shift solenoid valves ON/OFF. According to the input shaft revolution, intermediate (counter) shaft revolution and output shaft revolution, the ECM detects the actual gear position (1st, 2nd, 3rd, 4th or 5th gear position). When the gear position commanded by the ECM and the actual gear position are not the same, the ECM illuminates the MIL and stores the DTC.

INSPECTION PROCEDURE

HINT:
Using the intelligent tester 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. Warm up the engine.
  2. Turn the ignition switch OFF.
  3. Connect the intelligent tester to the DLC3.
  4. Turn the ignition switch ON and turn the tester ON.
  5. Enter the following menus: Powertrain / Engine and ECT / Active Test.
  6. Follow the instructions on the tester and perform the Active Test.
HINT:
While driving, the shift position can be forcibly changed with the tester.
Comparing the shift position commanded by the Active Test with the actual shift position enables you to confirm the problem (RAV4_ACA30 RM000000O8L0BDX.html).

Tester Display
Test Part
Control Range
Diagnostic Note
Control the Shift Position
[Test Details]
Operate the shift solenoid valve and set each shift lever position by yourself
[Vehicle Condition]
  1. IDL: ON
  2. 50 km/h (31 mph) or less
[Other information]
  1. Press "→" button: Shift up
  2. Press "←" button: Shift down
1st / 2nd / 3rd / 4th / 5th
Possible to check the operation of the shift solenoid valves
HINT:
  1. This test can be conducted when the vehicle speed is 50 km/h (31 mph) or less.
  2. The shift position commanded by the ECM is shown in the Data List / Shift Status display on the tester.
1.CHECK OTHER DTCS OUTPUT (IN ADDITION TO DTC P0771)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch ON and turn the tester ON.

  1. Enter the following menus: Powertrain / Engine and ECT / DTC / Current or Pending.

  1. Read the DTCs using the tester.

    Result:
    Result
    		Proceed to
    P0771
    		A
    P0771 and other DTCs
    		B
    HINT:
    If any other codes besides P0771 are output, perform troubleshooting for those DTCs first.


B
GO TO DTC CHART (RAV4_ACA30 RM000000W710ATX.html)
A


2.INSPECT SHIFT SOLENOID VALVE SR


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.U151F Automatic Transaxle.Automatic Transaxle System. Dtc P0771 Shift Solenoid E Performance (Shift Solenoid Valve Sr)

  1. Remove the shift solenoid valve SR.

  1. Measure the resistance between the solenoid valve terminal and solenoid valve body.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    Solenoid Connector (SR) - Solenoid Body (SR)
    		20°C (68°F)
    		11 to 15 Ω

  1. Connect the battery's positive (+) lead to the terminal of the solenoid valve connector, and the negative (-) lead to the solenoid body. Then check that the valve moves and makes an operating sound.

    OK:
    Valve moves and makes operating sound.


NG
REPLACE SHIFT SOLENOID VALVE SR (RAV4_ACA30 RM0000027NY00CX.html)
OK


3.INSPECT TRANSMISSION VALVE BODY ASSEMBLY

  1. Check the transmission valve body assembly.

    OK:
    There are no foreign objects on each valve.


NG
REPAIR OR REPLACE TRANSMISSION VALVE BODY ASSEMBLY (RAV4_ACA30 RM000001SU5018X.html)
OK


4.INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY

  1. Check the torque converter clutch assembly (RAV4_ACA30 RM000001GS000WX.html).

    OK:
    The torque converter clutch operates normally.


NG
REPLACE TORQUE CONVERTER CLUTCH ASSEMBLY (RAV4_ACA30 RM000001SUM00YX.html)
OK

REPAIR OR REPLACE AUTOMATIC TRANSAXLE ASSEMBLY (RAV4_ACA30 RM000001SUM00YX.html)