Toyota RAV4 (XA40) 2013-2018 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:
Communication
Description
The skid control ecu sends signals such as cruise control cancel demand
signals and brake operation
demand from ecm response signals to the ecm when the cruise control system is in
operation.
Inspection procedure
Hint:
This circuit uses can communication. Therefore, if t ...
Terminals of ecm
Check ecm
Measure the voltage of the ecm connector.
Hint:
Each ecm terminal's standard voltage is shown in
the table below.
In the table, first follow the information under
"condition". Look under "symbols (terminal no.)"
For the terminals to be inspected. ...
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 ...
