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:

Turning the high beam on/off manually
Switching to low beam Pull the lever to original position. Switching to high beam Turn the light switch to position. The automatic high beam indicator will turn off and the high beam indicator will turn on. The automatic high beam can be operated when Vehicles without a smart ke ...

Back-up light circuit
Description The park / neutral position switch turns on when the shift lever is moved into the r position, causing the back-up lights to illuminate. Wiring diagram Inspection procedure Inspect fuse (gauge1) Remove the gauge1 fuse from the instrument panel junction block. Meas ...

Reassembly
Install piston Using a small screwdriver, install a new snap ring onto one end of the piston pin hole. Hint: Make sure that the end gap of the snap ring is not aligned with the pin hole cutout portion of the piston. Gradually heat the piston up to 80 to 90°c (176 to 194°f ...

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