Toyota RAV4 (XA40) 2013-2018 Service Manual: System description
- Engine immobiliser system description
The engine immobiliser system is designed to prevent the vehicle from being stolen. This system uses a transponder key ecu that stores the key codes of authorized ignition keys. If an attempt is made to start the engine using an unauthorized key, the ecu sends a signal to the ecm to prohibit fuel delivery and ignition, effectively disabling the engine.
- Function of main component
- System function
- When the transponder key ecu detects that the
unlock warning switch is on, the ecu provides
current to the transponder key coil and produces a
faint electric wave. A transponder chip in the key grip
receives the wave and outputs a key id code signal.
The transponder key coil receives this signal, the transponder key amplifier amplifies it, and then the signal is transmitted to the ecu. The ecu matches the key's id code with the vehicle's id code, which was previously registered in the ecu and then communicates the results to the ecm using sfi communication.
- After the identification results show that the key's id code matches the vehicle's id code and the ecu has confirmed their match: 1) the engine immobiliser system is canceled and the engine starting controls (fuel injection control and ignition control) enter standby mode; and 2) the ecu receives a security indicator light signal, and turns the security indicator light off.
Engine immobiliser system
Parts location
System diagram
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How to proceed with troubleshooting
Hint:
Use these procedures to troubleshoot the engine immobiliser
system.
*: Use the intelligent tester.
Vehicle brought to workshop
Inspect battery voltage
Standard voltage:
11 t ...
Other materials:
On-vehicle inspection
Check steering pad assembly (vehicle not involved in collision and
airbag not deployed)
Perform a diagnostic system check (see page rs-
49).
With the steering pad (with airbag) installed on the
vehicle, perform a visual check:
check for cuts, cracks or discoloration on the
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Abs control system malfunction
Description
This dtc is output when the vsc system detects a malfunction in the abs
system.
Inspection procedure
Check dtc for abs system
Clear the dtc (see page bc-47).
Turn the ignition switch on.
Check if the same dtc is recorded (see page bc-47).
Result
Repair ...
Rear view monitor
system
The rear view monitor system assists the driver by displaying an
image of the view behind the vehicle and fixation guide lines
while backing up, for example while parking.
The screen illustrations used in this text are intended as examples,
and may differ from the image that is actually displaye ...
