Suzuki Liana RH413, Service Manual

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10C-3 Immobilizer Control System:
General Description
Immobilizer Control System Introduction
S3RH0AA301001
The immobilizer control system designed to prevent vehicle burglar consists of the following components.
• Engine Control Module (ECM) (1)
• Immobilizer Control Module with coil antenna (2)
• Ignition key with built-in transponder (3)
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 reads the Transponder code through the coil antenna installed to the steering lock
assembly.
2) Immobilizer Control Module compares the Transponder code read in Step 1) and that registered in Immobilizer
Control Module, and then checks if they match. If they do not match, ECM stops operation of the injector and
ignition of spark plug.
3) When it is confirmed that two Transponder codes match, Immobilizer Control Module and ECM check if ECM/
Immobilizer Control Module (ECU) codes registered in them respectively match.
4) Only when it is confirmed that ECM/Immobilizer Control Module (ECU) codes match, the engine starts running. If
ECM/Immobilizer Control Module (ECU) codes do not match, ECM stops operation of the injector and ignition of
spark plug.
iii)
i)
1
2
3
2 1
3
4
5
I3RH0AA30005-01
4. Immobilizer indicator lamp (if equipped)
5. Malfunction indicator lamp