Toyota RAV4 manuals

Toyota RAV4 Service Manual: Pressure control solenoid "A " performance (shift solenoid valve sl1)

Toyota RAV4 Service Manual / U140f automatic transaxle / Automatic transaxle system / Diagnostic trouble code chart / Pressure control solenoid "A " performance (shift solenoid valve sl1)

Description

The ecm uses signals from the vehicle speed sensor to detect the actual gear position (1st, 2nd, 3rd or o/d 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.).

Toyota RAV4. Pressure control solenoid "a " performance (shift solenoid valve sl1)


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 or o/d gear position). When the gear position commanded by the ecm and the actual gear position are not the same, the ecm illuminates the mil.

Example: when either condition (a) or (b) is met, the ecm detects a malfunction.

  1. The ecm commands the 1st gear, but the actual gear is 2nd.
  2. The ecm commands the 2nd gear, but the actual gear is 1st.

Monitor strategy

Toyota RAV4. Monitor strategy


Typical enabling conditions

Toyota RAV4. Typical enabling conditions


Toyota RAV4. Typical enabling conditions


Typical malfunction thresholds

Either of the following conditions is met: off malfunction, or on malfunction (a) and (b) 2 detections are necessary per driving cycle: 1st detection: temporary flag on

2Nd detection: pending fault code on

Toyota RAV4. Typical malfunction thresholds


Inspection procedure

Hint:

Performing the intelligent tester's active test allows relay, vsv, actuator and other items to be operated without removing any parts. Performing the active test early in troubleshooting is one way to save time.

The data list can be displayed during the active test.

  1. Warm up the engine.
  2. Turn the ignition switch off.
  3. Connect the intelligent tester to the can vim. Then connect the can vim to the dlc3.
  4. Turn the ignition switch on and turn the tester on.
  5. Enter the following menus: diagnosis / enhanced obd ii / active test.
  6. Follow the instructions on the tester and read 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 (see page ax-31).

Toyota RAV4. Inspection procedure


Hint:

  1. Check other dtc output (in addition to dtc p0746)

  1. Connect the intelligent tester to the can vim. Then connect the can vim to the dlc3.
  2. Turn the ignition switch on and turn the tester on.
  3. Enter the following menus: diagnosis / enhanced obd ii / dtc info / current codes.
  4. Read the dtcs using the tester.

Result 


Hint:

If any other codes besides p0746 are output, perform the troubleshooting for those dtcs first.



  1. Inspect shift solenoid valve sl1

Toyota RAV4. Inspect shift solenoid valve sl1


  1. Remove the shift solenoid valve sl1.
  2. Measure the resistance of the solenoid valve.

Standard resistance: 5.0 To 5.6 Ùat 20°c (68°f)

  1. Connect the battery's positive (+) lead with a 21 w bulb to terminal 2 and the negative (-) lead to terminal 1 of the solenoid valve connector. Then check that the valve moves and makes an operating noise.

Ok: valve moves and makes operating noise.



  1. Inspect transmission valve body assembly

  1. Check the transmission valve body assembly.

Ok: there are no foreign objects on each valve.



  1. Inspect torque converter clutch assembly

  1. Check the torque converter clutch assembly (see page ax-153).

Ok: the torque converter clutch operates normally.



Repair or replace automatic transaxle assembly

Torque converter clutch solenoid performance (shift solenoid valve dsl)
Description The ecm uses the signals from the throttle position sensor, air-flow meter, turbine (input) speed sensor, intermediate (counter) shaft speed sensor and crankshaft position sensor t ...

Pressure control solenoid "A" electrical (shift solenoid valve sl1)
Description Shifting from 1st to o/d is performed in combination with the on and off operation of the shift solenoid valves sl1 and sl2, which are controlled by the ecm. If an open or short circu ...

Other materials:

Open in one side of can branch line
Description If 2 or more ecus and/or sensors do not appear on the intelligent tester's "bus check" screen via the can vim, one side of the can branch wire may be open. (One side of the canh [branch wire] /canl [branch wire] of the ecu and/or sensor is open.) Wiring diagram ...

Air mix damper control servo motor circuit (driver side)
Description The air mix damper servo sends pulse signals to indicate the damper position to the air conditioning amplifier. The air conditioning amplifier activates the motor (normal or reverse) based on these signals to move the air mix damper (driver seat) to the appropriate position. T ...

General maintenance (2006/01- )
Inspect drive belt (see page em-7) Replace spark plugs (see page ig-7) Replace air cleaner filter Remove the air filter. Visually check that the air filter is not excessively damaged or oily. Replace the air filter with a new one, if necessary. Replace engine oil and oil fil ...

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