Toyota RAV4 manuals

Toyota RAV4 (XA40) 2013-2018 Service Manual: Vehicle speed sensor "A"

Toyota RAV4. Vehicle speed sensor "A"


description

The speed sensor detects the wheel speed and sends the appropriate signals to the skid control ecu.

The skid control ecu converts these wheel speed signals into a 4-pulse signal and outputs it to the ecm via the combination meter. The ecm determines the vehicle speed based on the frequency of these pulse signals.

Toyota RAV4. Vehicle speed sensor "a"


Toyota RAV4. Vehicle speed sensor "a"


Monitor description

The ecm assumes that the vehicle is being driven, when the indicated engine speed is more than 2,300 rpm and 30 seconds have elapsed since the park/neutral position (pnp) switch was turned off. If there is no speed signal from the combination meter, despite these conditions being met, the ecm interprets this as a malfunction in the speed signal circuit. The ecm then illuminates the mil and sets the dtc.

Monitor strategy

Toyota RAV4. Monitor strategy


Typical enabling conditions

Toyota RAV4. Typical enabling conditions


Toyota RAV4. Typical enabling conditions


Typical malfunction thresholds

Toyota RAV4. Typical malfunction thresholds


Wiring diagram

Toyota RAV4. Wiring diagram


Inspection procedure

Hint:

Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

  1. Check operation of speedometer

  1. Drive the vehicle and check whether the operation of the speedometer in the combination meter is normal.

Hint:



  1. Read value using intelligent tester (vehicle spd)

  1. Connect the intelligent tester to the dlc3.
  2. Turn the ignition switch on.
  3. Turn the tester on.
  4. Select the following menu items: diagnosis / enhanced obd ii / data list / primary / vehicle spd.
  5. Drive the vehicle.
  6. Read the value displayed on the tester.

Ok: vehicle speeds displayed on tester and speedometer display are equal.



  1. Check combination meter assembly (+s voltage)

  1. Disconnect the e19 combination meter connector.
  2. Turn the ignition switch on.
  3. Measure the voltage between the terminal of the combination meter and the body ground.

Standard voltage


  1. Reconnect the combination meter connector.



  1. Check combination meter assembly (spd signal waveform)

  1. Shift the transmission gear selector lever to the neutral position.
  2. Jack up the vehicle.
  3. Turn the ignition switch on.
  4. Check the voltage between the terminal of the combination meter and the body ground while the wheel is turned slowly.

Standard voltage


Hint:

The output voltage should fluctuate up and down, similarly to the diagram, when the wheel is turned slowly.



  1. Check harness and connector (combination meter assembly - ecm)

  1. Disconnect the e19 combination meter connector.
  2. Disconnect the a9 ecm connector.
  3. Check the resistance.

Standard resistance (check for open)


Standard resistance (check for short)


  1. Reconnect the combination meter connector.
  2. Reconnect the ecm connector.




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Brake switch "A" / "B" correlation
Description The stop light switch is a duplex system that transmits two signals: stp and st1-. These two signals are used by the ecm to monitor whether or not the brake system is working prope ...

Other materials:

List screen operation
When a list screen is displayed, use the appropriate buttons to scroll through the list. How to scroll   Select to scroll to the next or previous page. Appears to the right of titles, the complete titles are too long for the display. Select this button to scroll the title. Turn th ...

BSM (Blind Spot Monitor)
The Blind Spot Monitor is a system that uses rear side radar sensors installed on the inner side of the rear bumper on the left and right side to assist the driver in confirming safety when changing lanes. WARNING â– Cautions regarding the use of the system The driver is solely responsible for sa ...

Steering angle sensor zero point malfunction
Description The skid control ecu learns the steering sensor zero point every time the ignition switch is turned on and the vehicle is driven at 35 km/h (22 mph) or more for approximately 5 seconds. The ecu also stores the previous zero point. If front wheel alignment or the steering wh ...

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