Toyota RAV4 (XA40) 2013-2018 Service Manual: 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)
- Connect the intelligent tester to (with can vim) the dlc3.
- Turn the ignition switch on and turn the intelligent tester main switch on.
- Select the item below in the active test, and then check that the blower motor operates.
- Inspect fuse (htr)
- Remove the htr h-fuse from the engine room no. 2 Relay block.
- Measure the resistance of the h-fuse.
Standard resistance:
below 1 
- Check wire harness (blower motor - body ground)
- Disconnect the e53 motor connector.
- Measure the resistance of the wire harness side connector.
Standard resistance
- Check wire harness (blower motor - battery)
- Disconnect the e53 motor connector.
- Measure the voltage of the wire harness side connector.
Standard voltage
- Check blower w/ fan motor sub-assembly
- Disconnect the e37 amplifier connector.
- Connect the e53 motor connector.
- Measure the voltage of the connector.
Standard voltage
- Check wire harness (air conditioning amplifier - body ground)
- Disconnect the e37 amplifier connector.
- Measure the voltage of the wire harness side connector
Standard voltage
- Check air conditioning amplifier
- Remove the air conditioning amplifier with its connectors still connected.
- Check the waveform of the amplifier connector.
Ok: waveform is as shown in the illustration.
Hint:
The waveform varies with the blower level.
Replace blower w/ fan motor sub-assembly
Air conditioning control panel does not operate
Description
This circuit consists of the air conditioning control and the air
conditioning amplifier. When the air
conditioning control is operated, signals are transmitted to the air
conditioni ...
Compressor circuit
Description
When the a/c switch is turned on, the magnetic clutch on signal is sent from
the air conditioning
amplifier. Then the mg clt relay turns on to operate the magnetic clutch.
Wiring diag ...
Other materials:
Using the interior lights
Interior lights list
Interior lights
Interior/personal lights
Engine switch light (if equipped)
Cup holder light (if equipped)
Interior lights
Front
Off
Door position
The interior lights come on when
a door is opened. They turn off
when the doors are closed.
On
...
Diagnosis system
Description
Engine immobiliser system data and diagnostic
trouble codes (dtcs) can be read through the
vehicle's data link connector 3 (dlc3). In some
cases, a malfunction may be occurring in the engine
immobiliser system even though the security
indicator light is not illuminated ...
Rear occupant classification sensor lh collision detection
Description
Dtc b1787 is output when the occupant classification ecu receives a collision
detection signal sent by
the rear occupant classification sensor lh when an accident occurs.
Dtc b1787 is also output when the front seat assembly rh is subjected to a
strong impact, even if an
actua ...
