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:

Ts and cg terminal circuit
Description If the vehicle is stationary during sensor check mode, speed sensor malfunctions cannot be detected. The vehicle must be driven for speed sensor malfunctions to be detected. Hint: Change to sensor check mode by connecting terminals tc and cg of the dlc3, and turning the ignitio ...

Power seat switch
Inspection Inspect front power seat switch Measure the resistance between the terminals when each switch is operated. Standard resistance Slide switch Front vertical switch Lifter switch Reclining switch If the result is not as specified, replace the switch. ...

Emergency wheel
Concept In the event of a flat tire, the emergency wheel can be used in place of the wheel with the defective tire. The emergency wheel is only intended for temporary use until the defective tire/wheel has been replaced. General information Mount one emergency wheel only. Also check the tire inflat ...

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