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
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 e37 amplifier connector.
- Measure the voltage of the wire harness side connector.
Standard voltage
- Check wire harness (air conditioning amplifier - body ground)
- Disconnect the e37 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 ...
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:
Indications on multi-information
display
Vehicles with 7-inch display
LTA indicator
The illumination condition of the
indicator informs the driver of the
system operation status.
Illuminated in white: LTA system is
operating.
Illuminated in green: Steering
wheel assistance of the steering
assist function or lane centering
function is ...
System description
Key reminder warning system description
When the driver side door is opened with the key in
the ignition key cylinder and ignition switch in the
acc or off position, this system causes the key
reminder warning buzzer to sound in order to warn
the driver that the ignition key has not ...
Luggage compartment
features
Cargo hooks
Raise the hooks to use.
The cargo hooks are provided for
securing loose items.
Caution
When the cargo hooks are not in use
To avoid injury, always return the cargo hooks to their stowed
positions.
Grocery bag hooks
Notice
Grocery bag hook weight capacity
Do not hang ...
