Immobilizer Control System - Suzuki GA413 Service Manual

IMMOBILIZER CONTROL SYSTEM

WARNING:
For vehicles equipped with Supplemental Restraint (Air Bag) System
D Service on and around the air bag system components or wiring must be performed only by an
authorized SUZUKI dealer. Refer to "Air Bag System Components and Wiring Location View" un-
der "General Description" in air bag system section in order to confirm whether you are perform-
ing service on or near the air bag system components or wiring. Please observe all WARNINGS
and "Service Precautions" under "On-Vehicle Service" in air bag system section before perform-
ing service on or around the air bag system components or wiring. Failure to follow WARNINGS
could result in unintentional activation of the system or could render the system inoperative. Ei-
ther of these two conditions may result in severe injury.
D Technical service work must be started at least 90 seconds after the ignition switch is turned to
the "LOCK" position and the negative cable is disconnected from the battery. Otherwise, the sys-
tem may be activated by reserve energy in the Sensing and Diagnostic Module (SDM).
GENERAL DESCRIPTION
DIAGNOSIS . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Precautions in Diagnosing Troubles
Diagnostic Flow Table . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code Check
(Immobilizer Control Module)
Diagnostic Trouble Code Check (ECM) 8G- 9
Diagnostic Trouble Code Table
TABLE A DTC is not Output
from Diagnostic Output Terminal
DTC 11 Transponder Code Not Matched
DTC 31 Transponder Code Not
Registered . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC 12 Fault in Immobilizer Control
Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC 13 No Transponder Code Transmitted
or Coil Antenna Opened/Shorted
DTC21 ECM/Immobilizer Control Module
Code Not Matched (Immobilizer Control
Module Side) . . . . . . . . . . . . . . . . . . . . . . . .
DTC81 (P1623) ECM/Immobilizer Control
Module Code Not Matched (ECM Side)
SECTION 8G
(IF EQUIPPED)
CONTENTS
. . . . . . . . . . . . . . . 8G- 2
8G- 6
. . . . . 8G- 6
8G- 7
. . . . . . . . 8G- 8
. . . . . . . . . 8G-11
. . . . . . . 8G-12
. 8G-13
8G-13
8G-13
. . . . . . . 8G-14
8G-16
. 8G-16
IMMOBILIZER CONTROL SYSTEM (IF EQUIPPED) 8G-1
DTC84 (P1620) ECM/Immobilizer Control
Module Code Not Registered
DTC 82 (P1622) Fault in ECM
DTC22 Ignition Switch Circuit
Open/Short . . . . . . . . . . . . . . . . . . . . . . . . .
DTC23 No ECM/Immobilizer Control
Module Code Transmitted from ECM or
DLC Circuit Opened/Shorted
DTC83 (P1621) No ECM/Immobilizer
Control Module Code Transmitted from
Immobilizer Control Module or DLC
Circuit Opened/Shorted
Inspection of ECM, Immobilizer Control
Module and its Circuit
ON-VEHICLE SERVICE . . . . . . . . . . . . . . . . .
Precautions in Handling Immobilizer
Control System . . . . . . . . . . . . . . . . . . . . . .
Immobilizer Control Module
Coil Antenna . . . . . . . . . . . . . . . . . . . . . . . . .
HOW TO REGISTER IGNITION KEY
PROCEDURE AFTER IMMOBILIZER
CONTROL MODULE REPLACEMENT
. . . . . . . . . . 8G-16
. . . . . . . . . . 8G-16
8G-17
. . . . . . . . . . 8G-18
. . . . . . . . . . . . . . . 8G-18
. . . . . . . . . . . . . . . . 8G-20
8G-22
8G-22
. . . . . . . . . . . . 8G-23
8G-23
. . . . . . 8G-24
. . . . 8G-26
8G