Toyota RAV4 manuals

Toyota RAV4 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.

Toyota RAV4. Blower motor circuit


Wiring diagram

Toyota RAV4. Blower motor circuit


Inspection procedure

  1. Perform active test by intelligent tester (blower motor)

  1. Connect the intelligent tester to (with can vim) 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 blower motor operates.

Toyota RAV4. Perform active test by intelligent tester (blower motor)




  1. Inspect fuse (htr)

  1. Remove the htr h-fuse from the engine room no. 2 Relay block.
  2. Measure the resistance of the h-fuse.

Standard resistance: below 1




  1. Check wire harness (blower motor - body ground)

Toyota RAV4. Check wire harness (blower motor - body ground)


  1. Disconnect the e53 motor connector.
  2. Measure the resistance of the wire harness side connector.

Standard resistance




  1. Check wire harness (blower motor - battery)

 Toyota RAV4. Check wire harness (blower motor - battery)


  1. Disconnect the e53 motor connector.
  2. Measure the voltage of the wire harness side connector.

Standard voltage



  1. Check blower w/ fan motor sub-assembly

Toyota RAV4. Check blower w/ fan motor sub-assembly


  1. Disconnect the e37 amplifier connector.
  2. Connect the e53 motor connector.
  3. Measure the voltage of the connector.

Standard voltage




  1. Check wire harness (air conditioning amplifier - body ground)

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


  1. Disconnect the e37 amplifier connector.
  2. Measure the voltage of the wire harness side connector

Standard voltage




  1. Check air conditioning amplifier

Toyota RAV4. Check air conditioning amplifier


  1. Remove the air conditioning amplifier with its connectors still connected.
  2. 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:

Hitch
Trailer hitch assemblies have different weight capacities. Toyota recommends the use of toyota hitch/bracket for your vehicle. For details, contact your toyota dealer. If you wish to install a trailer hitch, contact your toyota dealer. Use only a hitch that conforms to the gross trailer weig ...

Trailer tongue weight
A recommended tongue weight varies in accordance with the types of trailers or towing as described below. To ensure the recommended values shown below, the trailer must be loaded by referring to the following instructions. Tongue weight The gross trailer weight should be distributed so ...

System description
General The air conditioning system has the following features: The air conditioning amplifier controls the operation of parts, such as the a/c compressor, automatically in accordance with the operating conditions of the air conditioning system. Mode position and damper ...

В© 2011-2019 Copyright www.trav4.net