Suzuki GA413, Service Manual

Page: 964 / 1246

With the diagnosis switch terminal of monitor coupler for ECM not
grounded, the ignition switch turned ON (but the engine at stop)
and regardless of the condition of the engine and emission control
system, ECM indicates whether a trouble has occurred in the im-
mobilizer control system or not by causing the malfunction indica-
tor lamp to flash or turn ON.
Malfunction indicator lamp is ON:
No trouble exists in the immobilizer control system.
Malfunction indicator lamp is flashing:
ECM or Immobilizer Control Module has detected some trouble in
the immobilizer control system.
NOTE:
As soon as the ignition switch is turned ON, ECM and Immobi-
lizer Control Module diagnose if a trouble has occurred in the
immobilizer control system. While the diagnosis is being
made, the malfunction indicator lamp stays ON and if the diag-
nosis result is “abnormal”, it immediately changes to flashing
but if the result if “normal”, it remains ON. Diagnosis takes
about 3 seconds at maximum.
0.5
TIME (sec.)
Ignition switch ON
ON
Immobilizer
control system
is normal
Immobilizer
control system
is abnormal
OFF
0.5 0.5 0.5 0.5
ON
OFF
MIL
When ECM and Immobilizer Control Module detects a trouble
which has occurred in the above areas, it stores DTC correspond-
ing to the exact trouble area in ECM and Immobilizer Control Mod-
ule memory.
DTCs stored in memory of each controller (Immobilizer Control
Module and ECM) can be read by using the procedure described
in “DIAGNOSTIC TROUBLE CODE CHECK (IMMOBILIZER
CONTROL MODULE)” and “DIAGNOSTIC TROUBLE CODE
CHECK(ECM)” in this section.
IMMOBILIZER CONTROL SYSTEM (IF EQUIPPED) 8G-5
GA413
supple