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:
Multiplex communication circuit
Description
The air conditioning amplifier communicates data with the ecm and combination
meter through the can
communication system.
Wiring diagram
Inspection procedure
Check dtc
Clear the dtc (see page ac-31).
Read the dtc (see page ac-31).
Result
Go to can c ...
Instrument cluster
For the purpose of explanation, the following illustrations display all
warning lights and indicators illuminated.
â– With 7-inch multi-information display
The display of the speedometer can be selected from two types,
analog or digital.
When analog speedometer is displayed
The units used on the m ...
Towing related terms
Gcwr (gross combination weight rating)
The maximum allowable gross
combination weight. The gross
combination weight is the sum
of the total vehicle weight
(including the occupants, cargo
and any optional equipment
installed on the vehicle) and the
weight of the trailer being towed
(inc ...