RT-3 USER GUIDE____________________________________________________
There is a dialog through an interconnection channel between the injection ECU and the
immobilizer ECU, to allow or not the vehicles´ ignition. This protection is implemented at
two levels; so, there are two conditions to be fulfilled for the athorization to take place:
1.
The immobilizer´s ECU is programmed to allow the starting only with the previously
right coded injection ECU.
2.
The immobilizer authorizes to start only if the key’s code has already been stored by
the system ECU. That means that in case the customer needed a new key, this should
be recognized and memorized by the immobilizer.
8.1.4 OPERATION
The steps done by the ECU before authorizing the ignition are the following:
The user enters the key and turns it on. Each key has a chip that emits a code when
excited by a radio-frequency signal. That signal is emitted from the ignition lock
cylinder when the contact has been done, then, a sensor reads the key’s emitted code.
The immobilizer ECU compares the read code with the stored codes(with a maximum
of eight).If the read code matches with one of the stored codes, the immobilizer ECU
authorizes the starting. On the contrary, immobilizer´s light flashes and the vehicle
stops after two seconds.
Moreover when the engine just starts, the immobilizer´s ECU proceeds with the
recognition of the injection ECU allowing starting if the code is correct.
36
(0 votes, average: 0 out of 5)
Comments are closed.