Toyota RAV4 manuals

Toyota RAV4 Service Manual: Check for open circuit

Toyota RAV4. Check for open circuit


  1. For an open circuit in the wire harness in fig. 1, Check the resistance or voltage, as described below.
  2. Check the resistance.

Toyota RAV4. Check for open circuit


  1. Disconnect connectors a and c, and measure the resistance between them.

Standard resistance (fig. 2)

Hint:


Measure the resistance while lightly shaking the wire harness vertically and horizontally.

If the results match the examples above, an open circuit exists between terminal 1 of connector a and terminal 1 of connector c.

  1. Disconnect connector b and measure the resistance between the connectors.

Standard resistance (fig. 3)

If the results match the examples
above, an open circuit exists between terminal 1 of connector b2 and terminal 1 of connector c.

  1. Check the voltage.

Toyota RAV4. Check the voltage


  1. In a circuit in which voltage is applied to the ecu connector terminal, an open circuit can be checked by conducting a voltage check.

    With each connector still connected, measure the voltage between the body ground and these terminals (in this order): 1) terminal 1 of connector a, 2) terminal 1 of connector b, and 3) terminal 1 of connector c.

Standard voltage (fig. 4)

If the results match the examples
above, an open circuit exists in the wire harness between terminal 1 of connector b and terminal 1 of connector c.

Basic inspection
When measuring resistance of electronic parts Unless otherwise stated, all resistance measurements should be made at an ambient temperature of 20°c (68°f). Resistance measurements m ...

Check for short circuit
If the wire harness is ground shorted (fig. 5), Locate the section by conducting a resistance check with the body ground (below). Check the resistance with the body ground. Disconne ...

Other materials:

All-wheel drive lock switch (awd models)
All-wheel drive lock mode can be used when a large amount of drive power needs to be applied to all the wheels, such as when the vehicle gets stuck in mud and you need to free it. Press the switch. The torque of the engine is distributed to the rear wheels to the maximum extent possible in ac ...

Mass or volume air flow circuit
Description The mass air flow (maf) meter is a sensor that measures the amount of air flowing through the throttle valve. The ecm uses this information to determine the fuel injection time and to provide the appropriate air-fuel ratio. Inside the maf meter, there is a heated platinu ...

Emission control system
Parts location System diagram On-vehicle inspection Check fuel cut rpm Increase the engine speed to at least 3,500 rpm. Use a sound scope to check for injector operating noise. Check that the operating sounds stop momentarily and then resume when the t ...

© 2011-2020 Copyright www.trav4.net