Toyota RAV4 (XA40) 2013-2018 Service Manual: 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 outputs the signal to the transponder key ecu.
Wiring diagram
Inspection procedure
- Read value of intelligent tester (transponder key coil)
- 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 / antenna coil. Read the result.
Ok: normal (transponder key coil is normal) appears on the screen.
- Check wire harness (transponder key ecu - transponder key amplifier)
- Disconnect the e46 ecu connector.
- Disconnect the e5 amplifier connector.
- Measure the resistance of the wire harness side connectors.
Standard resistance 
Replace transponder key amplifier
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 ...
Transponder chip malfunction
Description
This dtc is output when: 1) during key code registration, a key malfunction
occurs; 2) the key code was
unable to be registered properly.
Inspection procedure
Reregister k ...
Other materials:
Brake warning light remains on
Description
If any of the following conditions are detected, the brake warning light
remains on:
The ecu connectors are disconnected from the skid control ecu.
The brake fluid level is insufficient.
The parking brake is applied.
The ebd is defective.
Wiring diagram
Inspection p ...
Deterioration of battery
Description
The ecm determines the battery power according to the voltage of the batt
terminal while the engine is
running (not cranking).
Inspection procedure
Inspect battery
Inspect the battery specific gravity.
Check the specific gravity of each cell.
Standard gravity: ...
Terminals of ecu
Center airbag sensor assembly (w/ curtain
shield airbag)
Center airbag sensor assembly (w/o curtain
shield airbag)
...
