Toyota RAV4 (XA40) 2013-2018 Service Manual: Engine immobiliser system malfunction
Description
This dtc is output when one of the following occurs: 1) the ecm detects errors in its own communications with the transponder key ecu; 2) the ecm detects errors in the communication lines; or 3) the ecu communication id between the transponder key ecu and ecm is different and an engine start is attempted. Before troubleshooting for this dtc, make sure no transponder key ecu dtcs are present. If present, troubleshoot the transponder key ecu dtcs first.
Wiring diagram
Inspection procedure
- Check for dtc
- Delete the dtc (see page ei-18).
- Recheck for dtc.
Ok: b2799 output does not reoccur.
- Check wire harness (transponder key ecu - ecm)
- Disconnect the e46 ecu connector.
- Disconnect the a9 ecm connector.
- Measure the resistance of the wire harness side connectors.
Standard resistance 
- Check transponder key ecu (operation)
- Temporarily replace the transponder key ecu with a new or normally functioning one.
- Check that then engine starts normally.
Ok: engine starts normally.
End (transponder key ecu is defective)
Communication malfunction no. 1
Description
This dtc is output when a communication error occurs between the transponder
key amplifier and
transponder key ecu. Some possible reasons for the communication error are: 1) 2
or ...
Security indicator light circuit
Description
When the transponder key is registered, the transponder key ecu indicates the
key registration condition
by lighting up, blinking or turning off the security indicator.
Wiring diagram ...
Other materials:
Defogging the windshield
Set the air outlet selector dial to
position.
Set the outside/recirculated air
mode button to outside air mode if
recirculated air mode is used.
Perform the following operations accordingly:
To adjust the fan speed, turn the fan speed control dial.
To adjust the temperat ...
Terminals of ecm
Check ecm
Disconnect the a9 and b30 connectors.
Measure the voltage and resistance of the wire
harness side connectors.
If the result is not as specified, there may be a
malfunction on the wire harness side. ...
Removal
Hint:
Use the same procedures for the rh side and lh side.
The procedures listed below are for the lh side.
Caution:
Be sure to read the precautionary notices concerning the
srs airbag system before servicing it (see page rs-1).
Disconnect cable from negative battery terminal
Cauti ...
