Immobilizer Control System; Precaution In Replacing Ecm; Precautions In Handling Immobilizer Control - Suzuki Swift Sport 2004 Service & Repair Manual

10C-1 Immobilizer Control System:

Immobilizer Control System

Control Systems
Precautions in Diagnosing Troubles
• Before confirming the diagnostic trouble code (DTC),
do not disconnect connector from ECM, battery cable
from battery, ground wire harness, or main fuse. Such
disconnection will erase DTC stored in ECM.
• DTC stored in ECM memory can be checked as well
as cleared by using SUZUKI scan tool. Before using
SUZUKI scan tool, read its operator's manual
carefully to know how to use it and what functions are
available.
• Be sure to read "Precautions for Electrical Circuit
Service in Section 00" before inspection.
• Communication of ECM, BCM, keyless start control
module (if equipped), ABS / ESP® control module,
steering angle sensor (ESP® model), combination
meter and TCM (A/T model) is established by CAN
(Controller Area Network). Therefore, handle CAN
communication lines with care referring to "Precaution
for CAN Communication System in Section 00". For
CAN communication system, refer to description on
"CAN Communication System Description in Section
1A".

Precaution in Replacing ECM

• If ECM is replaced with new or used one without
immobilizer control function, the engine will not be
started. In case of the above, check if the newly
installed ECM has immobilizer control function.
• After ECM is replaced with new one or used one, the
transponder code in the transponder built in the
ignition key has to be registered with ECM. Or, the
engine cannot be started up. For the registration
procedure, refer to "Procedure after ECM
Replacement".
Precautions

Precautions in Handling Immobilizer Control

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System
• Do not turn ON ignition switch with ignition key in
contact with another one or quite close to another
one. Or, the immobilizer control system may detect
some abnormal condition and prevent the engine from
starting.
• Do not turn ON ignition switch by using ignition key
with any type of metal (1) wrapped its grip or in
contact with it. Or, the immobilizer control system may
detect some abnormal condition and prevent the
engine from starting.
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