Toyota RAV4 Quiz
Air conditioning

Ig power source circuit

In this manual: Air conditioning
Introduction — 37Interior — 12Exterior — 432Az-fe engine mechanical — 1552Az-fe ignition — 182Az-fe charging — 232Az-fe emission control — 82az-fe exhaust — 32Az-fe fuel — 72Az-fe lubrication — 4Brake — 17Brake control — 63U140f automatic transaxle — 59Instrument panel — 8Suspension — 18Drive shaft — 23Axle — 6Tire and wheel — 30Air conditioning — 93Lighting — 45Cruise control — 21Differential — 12Door lock — 31Engine immobiliser — 21Horn — 5Can communication — 27Mirror — 5Parking brake — 5Power steering — 27Propeller shaft — 3Seat — 29Seat belt — 27Sliding roof — 25Steering column — 6Wiper and washer — 11Supplemental restraint system — 95Other system — 5Maintenance — 14
7steps
~42min
2/5difficulty
Done 0 of 7
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)
  2. Remove the ecu-ig2 fuse from the instrument panel junction block.
  3. 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

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