Toyota RAV4 (XA40) 2013-2018 Service Manual: Ecu power source circuit
Description
This is the power source for the tire pressure warning ecu.
Wiring diagram
Inspection procedure
Notice:
It is necessary to register an id code after replacing the tire pressure monitor valve and/or the tire pressure warning ecu (see page tw-9).
- Inspect fuse (ecu-ig1)
- Remove the ecu-ig1 fuse from the instrument panel junction block.
- Measure the resistance of the fuse.
Standard resistance:
below 1 
- Inspect ig1 relay
- Remove the ig1 relay from the instrument panel junction block.
- Measure the resistance of the relay.
Standard resistance
- Inspect wire harness (ecu - battery and body ground)
- Disconnect the e56 ecu connector.
- Measure the voltage of the wire harness side connector.
Standard voltage 
- Measure the resistance of the wire harness side connector.
Standard resistance 
Proceed to next circuit inspection shown in problem symptoms table
Tire pressure warning light circuit
Description
If the tire pressure warning ecu detects trouble, the tire pressure warning
light turns on and tire pressure
monitor is canceled at the same time. At this time, the ecu records a dtc i ...
Tire pressure warning receiver (w/ antenna)
Components
...
Other materials:
Diaphragm oil seal
Components
Removal
Drain differential oil
Using a 10 mm socket hexagon wrench, remove the
rear differential drain plug and gasket, and drain the
oil.
Install a new gasket to the rear differential drain
plug.
Using a 10 mm socket hexagon wrench, install the
rear differe ...
System description
Power door lock system description
The power door lock system locks / unlocks all
doors with a one-touch operation.
The door control switch of the power window
regulator master switch or door control switch on
passenger side sends lock / unlock request
signals to the main body ...
Customization
Customizable features
Your vehicle includes a variety
of electronic features
that can be personalized to
suit your preferences. The
settings of these features
can be changed using the
multi-information display,
navigation/multimedia system,
or at your Toyota
dealer.
Customizing vehicle features
â– ...
