Suzuki Baleno Manual page 968

The immobilizer control system is designed to prevent vehicle burglar and consists of following components.
D Engine control module/Powertrain control module (ECM/PCM)
D Immobilizer Control Module
D Ignition key (with built-in transponder)
D Coil antenna
Operation of this system is as follows.
(1) Each ignition key has its own code Transponder code stored in memory. When the ignition switch is turned ON,
Immobilizer Control Module tries to read the Transponder code through the coil antenna installed to the steering
lock assembly.
(2) Immobilizer Control Module compares the Transponder code read in (1) and that registered in Immobilizer Con-
trol Module and checks if they match.
(3) When it is confirmed that two Transponder codes match each other as described above, Immobilizer Control
Module and ECM/PCM check if ECM/Immobilizer Control Module codes registered in them respectively match.
(4) Only when it is confirmed that ECM/Immobilizer Control Module codes match, the engine starts running. If
Transponder codes in Step (2) or ECM/Immobilizer Control Module codes in Step (3) do not match, ECM/PCM
will stop operation of the injector and the ignitor (i.e., ignition of spark plug).
Ignition key
Transponder
GENERAL DESCRIPTION
Immobilizer
code (1)
IMMOBILIZER CONTROL SYSTEM (IF EQUIPPED) 8G-3
(2)
(3)
Control
Module
(4)
ECM/PCM
1. ECM/PCM
2. Coil antenna
3. Immobilizer diagnostic coupler
3-1. Diagnostic output terminal
("P/G" wire terminal)
3-2. Ground terminal
("B" wire terminal)
4. Immobilizer Control Module
5. J/B
6. Immobilizer indicator lamp
(if equipped)
7. Malfunction indicator lamp