Toyota RAV4 manuals

Toyota RAV4 Service Manual: 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 conditioning amplifier and servo motors.

Wiring diagram

Toyota RAV4. Ig power source circuit


Inspection procedure

  1. Inspect fuse (ecu-ig2)

  1. Remove the ecu-ig2 fuse from the instrument panel junction block.
  2. Measure the resistance of the fuse.

Standard resistance: below 1




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


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

Standard resistance




Proceed to next circuit inspection shown in problem symptoms table

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 ...

Back-up power source circuit
Description This is the back-up power source circuit for the air conditioning amplifier. Power is supplied even when the ignition switch is turned off and is used for functions such as the diagnos ...

Other materials:

Abs warning light does not come on
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Diagnosis system
Description Key reminder warning system data can be read through the data link connector 3 (dlc3) of the vehicle. When the system seems to be malfunctioning, use the intelligent tester (with can vim) to check for malfunctions and perform repairs. Check dlc3 The vehi ...

Trailer towing
Your vehicle is designed primarily as a passenger-and-load-carrying vehicle. Towing a trailer can have an adverse impact on handling, performance, braking, durability, and fuel consumption. For your safety and the safety of others, you must not overload your vehicle or trailer. You must also e ...

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