Toyota RAV4 (XA40) 2013-2018 Service Manual: Hazard warning switch circuit
Description
When the hazard warning signal switch is turned on, the turn signal flasher relay (marking: flsh) in the main body ecu turns on to flash the hazard warning signal lights.
Wiring diagram
Inspection procedure
- Perform active test by intelligent tester
- Connect the intelligent tester (with can vim) to the dlc3.
- Turn the ignition switch on and press the intelligent tester main switch on.
- Select the item below in the active test and then check the relay operation.
Ok: all hazard warning signal lights flash.
- Inspect fuse (haz)
- Remove the haz fuse from the engine room no. 1 Relay block.
- Measure the resistance of the fuse.
Standard resistance:
below 1
- Check wire harness (turn signal flasher relay - battery)
- Remove the turn signal flasher relay from the instrument panel junction block.
- Measure the voltage of the wire harness side connector.
Standard voltage
- Check operation of turn signal flasher relay (marking: flsh)
- Replace the turn signal flasher relay with a normally functioning one or a new one.
- Check that the appropriate turn signal light flashes.
- Connect the intelligent tester (with can vim) to the dlc3.
- Turn the ignition switch on and press the intelligent tester main switch on.
- Select the item below in the active test and then check the relay operation.
Ok: all hazard warning signal lights flash.
Replace turn signal flasher relay
- Inspect hazard warning signal switch
- Remove the hazard warning signal switch.
- Measure the resistance of the switch.
Standard resistance
Repair or replace harness and connector (hazard warning signal switch - body ground)
Turn signal light circuit
Description
The turn signal flasher relay (marking: flsh) in the main body ecu turns on
when it receives signals
from the headlight dimmer switch integrated with the turn signal switch, causing
...
Back-up light circuit
Description
The park / neutral position switch turns on when the shift lever is moved
into the r position, causing the
back-up lights to illuminate.
Wiring diagram
Inspection procedure
I ...
Other materials:
Diagnosis system
Check dlc3
Check the dlc3:
the power steering ecu uses can (iso11898-1)
and iso9141-2 for communication protocol. The
terminal arrangement of the dlc3 complies with
sae j1962 and matches the iso9141-2 format.
Notice:
*: Before measuring the resistance, leave the
vehicle ...
Components (2005/11-2006/01)
Sliding roof ecu power source circuit
Description
If the sliding function and tilt function do not operate, there may be a
malfunction in the sliding roof ecu
power source circuit.
Wiring diagram
Inspection procedure
Perform active test by i ...
Check for intermittent problems
Hint:
Inspect the vehicle's ecm using check mode. Intermittent
problems are easier to detect with the intelligent tester when
the ecm is in check mode. In check mode, the ecm uses 1
trip detection logic, which is more sensitive to malfunctions
than normal mode (default), which uses 2 trip detec ...
