Toyota RAV4 manuals

Toyota RAV4 Service Manual: Check and replace ecu

Notice:

Toyota RAV4. Check and replace ecu


  1. First, check the ecu ground circuit. If it is faulty, repair it. If it is normal, the ecu could be faulty.

    Temporarily replace the ecu with a normally functioning one and check if the problem symptoms occur. If the problem symptoms disappear, replace the original ecu.

  1. Measure the resistance between the ecu ground terminal and body ground.

    Standard resistance: Below 1 ù

  2. Disconnect the ecu connector. Check the ground terminal on the ecu side and wire harness side for bending, corrosion or foreign matter. Lastly, check the contact pressure of the female terminals.
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 ...

Terms
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Other materials:

Terminals of ecu (2005/11-2006/01)
Check air conditioning amplifier Measure the voltage and resistance of the connectors. Hint: Check from the rear of the connector while it is connected to the air conditioning amplifier. using an oscilloscope, check waveform 1. Can communication signal Hint: ...

How to proceed with troubleshooting (2005/11-2006/01)
Hint: Use these procedures to troubleshoot the air conditioning system. *: Use the intelligent tester. Vehicle brought to workshop Customer problem analysis and symptom check Inspect battery voltage Standard voltage: 11 to 14 v If the voltage is below 11 v, rechar ...

Steering gear
Components Removal Position front wheels facing straight ahead Disconnect cable from negative battery terminal Caution: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation. ...

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