Toyota RAV4 manuals

Toyota RAV4 (XA40) 2013-2018 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:

If you have a flat tire
Your vehicle is equipped with a spare tire. The flat tire can be replaced with the spare tire. WARNING â– If you have a flat tire Do not continue driving with a flat tire. Driving even a short distance with a flat tire can damage the tire and the wheel beyond repair, which could result in an accide ...

Dtc check / clear
Check dtc Dtcs which are stored in the ecm can be displayed with the intelligent tester. The intelligent tester can display pending dtcs and current dtcs. Some dtcs are not stored unless a malfunction is detected in consecutive driving cycles. When a malfunction is detected ...

Inspection
Inspect starter assembly Notice: These tests must be performed within 3 to 5 seconds to avoid burning out the coil. Perform the pull-in test. Disconnect the lead wire from terminal c. Connect the battery to the magnetic switch as shown in the illustration. Check that the clutch ...

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