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:
Front stabilizer bar
Components
Removal
Remove front wheel
Remove front stabilizer link assembly lh
Remove the 2 nuts and stabilizer link.
Remove front stabilizer link assembly rh
Hint:
Use the same procedures described for the lh side.
Remove front suspension member brace front lh
...
The keys
The following keys are provided with the vehicle.
Vehicles without a smart key system (type a)
Master keys
Operating the wireless remote control
function
Valet key
Key number plate
Vehicles without a smart key system (type b)
Master keys
Operating the wireless r ...
Throttle / pedal position sensor / switch "A" circuit range / performance
problem
Hint:
This dtc relates to the throttle position (tp) sensor.
Description
Refer to dtc p0120 (see page es-114).
Monitor description
The ecm uses the tp sensor to monitor the throttle valve opening angle.
This sensor transmits two signals: vta1 and vta2. Vta1 is used to detect the
th ...
