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.
This power source is used for operating components, such as the air conditioning amplifier and servo motors.
Wiring diagram
Inspection procedure
- Inspect fuse (ecu-ig2)
- Remove the ecu-ig2 fuse from the instrument panel junction block.
- Measure the resistance of the fuse.
Standard resistance:
below 1 
- Check wire harness (air conditioning amplifier - battery)
- Disconnect the e36 amplifier connector.
- Measure the voltage of the wire harness side connector.
Standard voltage 
- Check wire harness (air conditioning amplifier - body ground)
- Disconnect the e36 amplifier connector.
- 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 ...
Refrigerant
...
Other materials:
Data list / active test (2005/11-2006/01)
Read data list
Hint:
Using the intelligent tester's data list allows switch,
sensor, actuator and other item values to be read without
removing any parts. Reading the data list early in
troubleshooting is one way to save time.
Connect the intelligent tester (with can vim) to the
...
Instrument panel
Engine switch
Starting the engine/changing the modes
Emergency stop of the engine
When the engine will not start
Warning messages*1
Shift lever
Changing the shift position
Precautions against towing
When the shift lever does not move
Meters
Reading the meters/adjusting the instrument pa ...
Test mode procedure
Hint:
By switching the skid control ecu from normal mode to
test mode, abnormality detection sensitivity is enhanced
and troubleshooting can be conducted efficiently.
Perform a sensor check in test mode after the speed
sensor or sensor rotor has been repaired or replaced.
If the igniti ...
