Toyota RAV4 (XA40) 2013-2018 Service Manual: 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 diagram
Inspection procedure
- Perform active test by intelligent tester (a/c mag clutch)
- Connect the intelligent tester (with can vim) to 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 compressor magnetic relay operates.
- Inspect fuse (ecu-ig1)
- Remove the ecu-ig1 fuse from the instrument panel junction block.
- Measure the resistance of the fuse.
Standard resistance:
below 1 
- Inspect magnetic clutch relay (marking: mg clt)
- Remove the magnetic clutch relay from the engine room no. 1 Relay block.
- Measure the resistance of the relay.
Standard resistance
- Check wire harness (air conditioning amplifier - battery)
- Disconnect the e37 amplifier connector.
- Measure the voltage of the wire harness side connector.
Standard voltage
- Check air conditioning amplifier (mgc voltage)
- Remove the air conditioning amplifier with its connectors still connected.
- Measure the voltage of the connector.
Standard voltage
- Check magnetic clutch
- Disconnect the b47 magnetic clutch connector.
- Connect the battery's positive (+) lead to terminal 3 of the magnetic clutch and the negative (-) lead to the body ground.
Ok: magnetic clutch is engaged.
Repair or replace wire harness (magnetic clutch - ecu-ig1)
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 diagra ...
Ig power source circuit
Description
This is the main power source supplied to the air conditioning amplifier when
the ignition switch is on
(ig). This power source is used for operating components, such as the air
cond ...
Other materials:
Operating the interior
lights
â– Front interior lights
Turns the lights on/off
Turns the switch to the door
position (door linked)
When a door is opened while the
door position is on, the lights turn
on.
Turns the door position on
Turns the lights off
â– Rear interior light
Turns the light on
Turns the door-linked fu ...
Cup holders
Front
Rear
Pull the armrest down.
Adjusting the size of the cup holder (front passenger’s side)
The adjuster can be removed.
Caution
Items unsuitable for the cup holders
Do not place anything other than cups or aluminum cans in the cup
holders.
Other items may be thrown out ...
Fog light relay
On-vehicle inspection
Inspect front fog light relay
Remove the front fog relay from the no. 6 Relay
block.
Measure the resistance of the relay.
Standard resistance
If the result is not as specified, replace the relay. ...
