Toyota RAV4 (XA40) 2013-2018 Service Manual: Ig power supply voltage malfunction
Description
The power steering ecu distinguishes the ignition switch status as on or off
through the ig power
source circuit.
Wiring diagram
Inspection procedure
- Read value of intelligent tester (ig power supply)
- Connect the intelligent tester (with can vim) to the dlc3.
- Turn the ignition switch on.
- Select the item "ig supply" in the data list and read the value displayed on the intelligent tester.
- Inspect fuse (ecu-ig1)
- Remove the ecu-ig1 fuse from the instrument panel junction block.
- Measure the resistance of the fuse.
Ok:
below 1 
- Check harness and connector (battery - power steering ecu)
- Disconnect the e18 and a1 power steering ecu connectors.
- Measure the voltage of the wire harness side connectors.
Standard voltage
Replace power steering ecu
Ecu malfunction
Description
Inspection procedure
If the power steering ecu detects these dtcs, it will shut off the motor
relay circuit (built into the power
steering ecu) and stop power assist. However, pow ...
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 ...
Other materials:
Reassembly
Caution:
Wear protective gloves. Sharp areas on the seat frame
(with adjuster) may injure your hands.
Hint:
Use the same procedures for the rh side and lh side.
The procedures listed below are for the lh side.
Install occupant classification ecu (for
driver side) (see page rs-394)
...
Rear airbag sensor
Components
On-vehicle inspection
Check rear airbag sensor (vehicle not
involved in collision)
Perform a diagnostic system check (see page rs-
49).
Check rear airbag sensor (vehicle
involved in collision and airbag has not
deployed)
Perform a diagnostic system check ...
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 ...
