Toyota RAV4 (XA40) 2013-2018 Service Manual: Eps warning light circuit
Description
If the power steering ecu detects a malfunction, the p/s warning light comes
on. At this time, the power
steering ecu stores a dtc in its memory.
Wiring diagram
Inspection procedure
- Check for dtc
- Using the intelligent tester (with can vim), check for
dtcs and confirm that there are no problems in the can
communication system.
Ok:
can dtcs are not output.
- Read value of intelligent tester (ig power supply)
- Connect the intelligent tester (with can vim) to the
dlc3.
- Turn the ignition switch on and press the intelligent
tester main switch on.
- Select the item "ig supply" in the data list and read
the value displayed on the intelligent tester.
Main body ecu
- 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 wire harness (battery - power steering ecu and body ground)
- Disconnect the a1 and e18 power steering ecu
connector.
- Measure the voltage of the wire harness side
connectors.
Standard voltage
- Perform active test by intelligent tester
- Connect the intelligent tester (with can vim) to the
dlc3.
- Turn the ignition switch on and press the intelligent
tester main switch on.
- Operate the intelligent tester according to the steps on
the display and select the active test.
Combination meter
Ok:
indicator comes on.
Replace power steering ecu
Description
The power steering ecu receives signals from the ecm and the skid control ecu
via the can
communication system.
Hint:
When 2 or more dtcs starting with [u] are output simul ...
Components
Removal
Position front wheels facing straight
ahead
Disconnect cable from negative battery
terminal
Caution:
Wait at least 90 seconds after disconnecting the
cable f ...
Other materials:
Front occupant classification sensor rh collision detection
Description
Dtc b1786 is output when the occupant classification ecu receives a collision
detection signal sent by
the front occupant classification sensor rh when an accident occurs.
Dtc b1786 is also output when the front seat assembly rh is subjected to a
strong impact, even if an
a ...
Trailer towing tips
Your vehicle will handle differently when towing a trailer. Help to avoid
an accident, death or serious injury, keep the following in mind when
towing:
Speed limits for towing a trailer vary by state or province. Do not
exceed the posted towing speed limit.
Toyota recommends that the vehic ...
Refrigerant line
Components (2005/11-2006/01)
Components (2006/01- )
...