Toyota RAV4 Service Manual: Check and replace ecu
Notice:
- The connector should not be disconnected from the ecu. Perform the inspection from the backside of the connector on the wire harness side.
- When no measuring condition is specified, perform the inspection with the engine stopped and the ignition switch on.
- Check that the connectors are fully seated. Check for loose, corroded or broken wires.
- 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.
- Measure the resistance between the ecu
ground terminal and body ground.
Standard resistance: Below 1 ù
- 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:
Installation
Install fan and generator v belt
Using sst and 19 mm socket wrench, loosen the vribbed
belt tensioner arm clockwise, then install the
fan and generator v belt.
Sst 09216-42010
Notice:
Be sure to connect sst and the tools so that
they are in line during use.
When retracti ...
Installation
Notice:
Do not heat the vehicle body, emblem and name plate
excessively.
Hint:
When installing the emblem and name plate, heat the vehicle
body, emblem and name plate using a heat light.
Standard heating temperature
Install no. 4 Back door name plate (for 4wd)
Clean the vehicle body ...
Air outlet damper control servo motor circuit
Description
The damper servo sends pulse signals to indicate the damper position to the
air conditioning amplifier.
The air conditioning amplifier activates the motor (normal or reverse) based on
these signals to move the
mode damper to the appropriate position, which controls the air o ...