Toyota RAV4 (XA40) 2013-2018 Service Manual: Check 4wd control ecu (for 4wd)
Notice:
- Turn the ignition switch off before measuring the
resistances of the main wire and branch wire.
- After the ignition switch is turned off, check that the
key reminder warning system and light reminder
warning system are not in operation.
- Before measuring the resistance, leave the vehicle as
is for at least 1 minute and do not operate the ignition
switch, any other switches or the doors. If doors need
to be opened in order to check connectors, open the
doors and leave them open.
Hint:
Operating the ignition switch, any other switches or the doors
triggers related ecu and sensor communication with the
can, which causes resistance variation.
- Junction connector
- No. 1 Junction connector
- No. 2 Junction connector
- No. 3 Junction connector
- No. 4 Junction connector
Hint:
*: For 4wd
- Check dlc3
- Measure the resistance of the connector.
- Check abs and traction actuator (skid control ecu)
- Disconnect the a19 ecu connector.
- Measure the resistance of the wire harness side
connector.
- Check steering angle sensor
- Disconnect the e11 sensor connector.
- Measure the resistance of the wire harness side
connector.
- Check yaw rate sensor
- Disconnect the k6 sensor connector.
- Measure the resistance of the wire harness side
connector.
- Check air conditioning amplifier (for automatic air conditioning
system)
- Disconnect the e37 amplifier connector.
- Measure the resistance of the wire harness side
connector.
- Check air conditioning amplifier (for manual air conditioning system)
- Disconnect the e36 amplifier connector.
- Measure the resistance of the wire harness side
connector.
- Check ecm
- Disconnect the a9 and b30 ecm connectors.
- Measure the resistance of the wire harness side
connectors.
Hint:
*1: For 2az-fe
*2: For 2gr-fe
- Check center airbag sensor assembly
- Disconnect the e45 sensor connector.
- Measure the resistance of the wire harness side
connectors.
- Check power steering ecu
- Disconnect the a1 and e18 ecu connectors.
- Measure the resistance of the wire harness side
connectors.
- Check combination meter ecu
- Disconnect the e19 ecu connector.
- Measure the resistance of the wire harness side
connector.
- Check instrument panel junction block (main body ecu)
- Disconnect the 1b and 1e junction block
connectors.
- Disconnect the e17 ecu connector.
- Measure the resistance of the wire harness side
connectors.
- Check 4wd control ecu (for 4wd)
- Disconnect the e57 ecu connector.
- Measure the resistance of the wire harness side
connector.
Notice:
Turn the ignition switch off before measuring the
resistances of the main wire and the branch wire.
After the ignition switch is turned off, check that the
key reminder warning syste ...
Bus check
Select "bus check" from the "obd / mobd
menu" screen.
Hint:
The ecus and sensors that are properly connected
to the can communication system can be di ...
Other materials:
Diagnosis system
Description
Sliding roof system data and diagnostic trouble
codes (dtcs) can be read through the vehicle's
data link connector 3 (dlc3). When the system
seems to be malfunctioning, use the intelligent
tester to check for malfunctions and perform repairs.
Check dlc3
The vehi ...
Basic inspection
When a malfunction is not confirmed by the dtc check,
troubleshooting should be carried out in all circuits
considered to be possible causes of the problem. In many
cases, by carrying out the basic engine check shown in the
following flowchart, the location of the problem can be found
quickly a ...
RCTA function
â– Operation of the RCTA
function
The RCTA function uses rear
side radar sensors to detect
vehicles approaching from the right or left at the rear of the
vehicle and alerts the driver of
the presence of such vehicles
by flashing the outside rear view
mirror indicators and sounding a
buzzer.
Appr ...