Toyota RAV4 manuals

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

Toyota RAV4. Compressor circuit


Inspection procedure

Inspection procedure

  1. Perform active test by intelligent tester (a/c mag clutch)

  1. Connect the intelligent tester (with can vim) to the dlc3.
  2. Turn the ignition switch on and turn the intelligent tester main switch on.
  3. Select the item below in the active test and then check that the compressor magnetic relay operates.

Toyota RAV4. Perform active test by intelligent tester (a/c mag clutch)




  1. Inspect fuse (ecu-ig1)

  1. Remove the ecu-ig1 fuse from the instrument panel junction block.
  2. Measure the resistance of the fuse.

Standard resistance: below 1



  1. Inspect magnetic clutch relay (marking: mg clt)

Toyota RAV4. Inspect magnetic clutch relay (marking: mg clt)


  1. Remove the magnetic clutch relay from the engine room no. 1 Relay block.
  2. Measure the resistance of the relay.

Standard resistance



  1. Check wire harness (air conditioning amplifier - battery)

  1. Disconnect the e36 amplifier connector.
  2. Measure the voltage of the wire harness side connector.

Standard voltage


Toyota RAV4. Check wire harness (air conditioning amplifier - battery)




  1. Check air conditioning amplifier (mgc voltage)

Toyota RAV4. Check air conditioning amplifier (mgc voltage)


  1. Remove the air conditioning amplifier with its connectors still connected.
  2. Measure the voltage of the connector.

Standard voltage




  1. Check magnetic clutch

Toyota RAV4. Check magnetic clutch


  1. Disconnect the b47 magnetic clutch connector.
  2. 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 When the heater control (blower switch) is set to position 1 or higher, the contact of the htr relay is closed, current flows to the blower motor, and the blower motor operates. The ...

Ig power source circuit
Description This is the main power source supplied to the air conditioning amplifier when the ignition switch is on. This power source is used for operating components, such as the air condition ...

Other materials:

Dtc check / clear
Check dtc Connect the intelligent tester to the dlc3. Turn the ignition switch on and turn the tester on. Select the following menu item: body / sliding roof / dtc. Check the dtc(s). Clear dtc Connect the intelligent tester to the dlc3. Turn the ignition switch on ...

Handling of hose clamps
Before removing the hose, check the clamp position so that it can be reinstalled in the same position. Replace any deformed or dented clamps with new ones. When reusing a hose, attach the clamp on the clamp track portion of the hose. For a spring type clamp, you may want to spread ...

Transmission fluid temperature sensor "A" circuit
Description The automatic transmission fluid (atf) temperature sensor converts the atf temperature into a resistance value which is input into the ecm. The ecm applies a voltage to the temperature sensor through ecm terminal tho1. The sensor resistance changes with the atf temperature. ...

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