Toyota RAV4 Service Manual: Push switch / key unlock warning switch malfunction
Description
This dtc is output if the transponder key ecu does not detect that the unlock warning switch is on even when the ignition switch is on. Under normal conditions, the unlock warning switch is on when the ignition switch is on.
Wiring diagram
Inspection procedure
- Read value of intelligent tester (unlock warning switch)
- Connect the intelligent tester (with can vim) to the dlc3.
- Turn the ignition switch on with a key that cannot start the engine.
- On the intelligent tester, enter the following menus: diagnosis / obd/mobd / immobiliser / data list / key sw. Read the result.
Ok: on (key is in ignition key cylinder) appears on the screen.
- Inspect unlock warning switch assembly
- Remove the unlock warning switch.
- Measure the resistance of the switch.
Standard resistance 
- Check wire harness (unlock warning switch - body ground)
- Disconnect the e6 switch connector.
- Measure the resistance of the wire harness side connector.
Standard resistance 
- Check wire harness (unlock warning switch - transponder key ecu)
- Disconnect the e6 switch connector.
- Disconnect the e46 ecu connector.
- Measure the resistance of the wire harness side connectors.
Standard resistance 
Replace transponder key ecu
Antenna coil open / short
Description
The transponder key coil receives key code signals from the transponder chip
in the key grip. The coil
built into the transponder key amplifier amplifies the key code signals and
...
Other materials:
Diagnosis system
Check dlc3
The ecm uses iso 15765-4 for communication. The
terminal arrangement of the dlc3 complies with sae
j1962 and matches the iso 15765-4 format.
If the result is not as specified, the dlc3 may have a
malfunction. Repair or replace the harness and
connector.
Hint:
Conn ...
Assist grips
An assist grip installed on the ceiling
can be used to support your
body while sitting on the seat.
Caution
Assist grip
Do not use the assist grip when getting in or out of the vehicle or
rising from
your seat.
Doing so could damage the assist grip, or could cause you to injure yourse ...
Cooling system
On-vehicle inspection
Check cooling system for leaks
Remove the radiator reservoir cap.
Caution:
To avoid the danger of being burned, do not
remove the radiator reservoir cap while the
engine and radiator are still hot. Thermal
expansion will cause hot engine coolant and
steam to b ...