Toyota RAV4 (XA40) 2013-2018 Service Manual: Drl relay circuit
Description
The main body ecu controls the daytime running light no. 2 Relay (marking:
drl no.2).
Wiring diagram

Inspection procedure
- Inspect daytime running light relay (marking: drl no. 2, Drl no. 3,
Drl no. 4)

- Remove the no. 2 Relay, no. 3 Relay and no. 4 Relay from
the engine room no. 2 Relay block.
- Measure the resistance of the relays.
Standard resistance:
No. 2, No. 4 
No. 3 
- Inspect fuse (head lh)
- Remove the head lh fuse from the engine room no. 2
Relay block.
- Measure the resistance of the fuse.
Standard resistance:
below 1 

- Inspect headlight bulb (high)

- Remove the headlight bulb (high).
- Connect the positive (+) lead from the battery to terminal
2 and the negative (-) lead to terminal 1, then check that
the bulb illuminates.

- Check wire harness (battery - no. 2 Daytime running light relay)

- Remove the no. 2 Daytime running light relay from the
engine room no. 2 Relay block.
- Measure the voltage of the relay block.
Standard voltage 

- Check wire harness (no. 2 Daytime running light relay - headlight
bulb and body ground)

- Remove the no. 2 Daytime running light relay from the
engine room no. 2 Relay block.
- Disconnect the a14 and a22 headlight (high)
connectors.
- Measure the resistance of the wire harness side
connectors and relay block.
Standard resistance 

- Check wire harness (main body ecu - battery)

- Disconnect the e16 main body ecu connector.
- Measure the voltage of the wire harness side connector.
Standard voltage 

Replace instrument panel junction block (main body ecu)
Description
When the light control switch, located on the headlight dimmer switch, is
turned to the head position, the
head relay illuminates the headlights.
Wiring diagram
Inspection proced ...
Description
The body ecu controls the headlight relay, no. 2 Daytime running light relay
(marking: drl no. 2) And
no. 4 Daytime running light relay (marking: drl no. 4).
Wiring diagram
I ...
Other materials:
Terminals of ecu (2006/01- )
Check air conditioning amplifier
Measure the voltage and resistance of the
connectors.
Hint:
Check from the rear of the connector while it is
connected to the air conditioning amplifier.
Hint:
*: For 2gr-fe
Using an oscilloscope, check waveform 1.
A/c compressor* ...
The rear cross traffic alert function
The rear cross traffic alert functions when your vehicle is in reverse.
It can detect other vehicles approaching from the right or left rear of
the vehicle. It uses radar sensors to alert the driver of the other vehicle’s
existence through flashing the outside rear view mirror indicators
and ...
Door control transmitter module
Components
Removal
Remove transmitter housing cover
Notice:
Take extra care when handling these precision
electronic components.
Twist the screwdriver in the direction of the arrow
mark in the illustration, and open the transmitter
housing cover.
Notice:
Do not forcibly pry ...