Toyota RAV4 (XA40) 2013-2018 Service Manual: Power supply relay failure
Description
If the power steering ecu detects these dtcs, it shuts off the motor relay
circuit (built into the power
steering ecu) and stops power assist.
Inspection procedure
- Reconfirm dtc
- Check for dtc.
Ok: dtc is not output.
Replace power steering ecu
Pig power supply voltage malfunction
Description
When a problem occurs in the system, the power source relay circuit is shut
off to stop the power assist.
Wiring diagram
Inspection procedure
Read value of intelligent ...
Assist map number un-writing
Description
The power steering ecu outputs this dtc when it determines that the assist
map is not written in the
ecu.
Hint:
The assist map data is written in the power steering ecu to contro ...
Other materials:
Blower motor circuit
Description
The blower motor is operated by signals from the air conditioning amplifier.
Blower motor speed signals
are transmitted in accordance with changes in the duty ratio.
Wiring diagram
Inspection procedure
Perform active test by intelligent tester (blower motor)
Conne ...
Intake air temperature sensor gradient too high
Description
The intake air temperature (iat) sensor, mounted on the mass air flow (maf)
meter, monitors the iat.
The iat sensor has a built-in thermistor with a resistance that varies according
to the temperature of the
intake air. When the iat is low, the resistance of the thermist ...
Inspection
Inspect generator brush holder assembly
Using a vernier caliper, measure the brush length.
Standard length:
9.5 To 11.5 Mm (0.374 To 0.453 In.)
Minimum length:
4.5 Mm (0.177 In.)
If the brush length is less than the minimum, replace
the generator brush holder assembly.
Inspe ...
