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:

Basic inspection
When a malfunction is not confirmed by the dtc check, troubleshooting should be carried out in all circuits considered to be possible causes of the problem. In many cases, by carrying out the basic engine check shown in the following flowchart, the location of the problem can be found quickly a ...

Vin not programmed or mismatch - ecm / pcm
Description Dtc p0630 is set when the vehicle identification number (vin) is not stored in the engine control module (ecm) or the input vin is incorrect. Input the vin with the intelligent tester. Monitor strategy Typical enabling conditions Typical malfunction thresholds Com ...

Headlight assembly
Components Removal Hint: Use the same procedures for the rh and lh sides. The procedures listed below are for the lh side. Disconnect cable from negative battery terminal Remove front fender liner lh (see page et-4) Remove front fender liner rh (see page et-4) Remove ra ...

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