Suzuki sq-416-420-625 Service Manual page 593

High
Immobilizer
Low
control system
is normal
Ignition switch ON
High
Immobilizer
Low
control system
is abnormal
0.5 0.5 0.5 0.5
High
Immobilizer
Low
control system
is normal
Ignition switch ON
High
Immobilizer
Low
control system
is abnormal
0.5 0.5 0.5 0.5
<Vehicle equipped with monitor coupler>
With the diagnosis switch terminal of monitor coupler for
ECM/PCM not grounded, the ignition switch turned ON (but the en-
gine at stop) and regardless of the condition of the electronic fuel
injection system, ECM/PCM indicates whether a trouble has oc-
curred in the immobilizer control system or not by causing the mal-
function indicator 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/PCM or Immobilizer Control Module has detected some
trouble in the immobilizer control system.
NOTE:
As soon as the ignition switch is turned ON, ECM/PCM and Im-
mobilizer 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
TIME (sec.)
but if the result is "normal", it remains ON. Diagnosis takes
0.5 about 3 seconds at maximum.
<Vehicle not equipped with monitor coupler>
With the ignition switch turned ON (but the engine at stop) regard-
less of the condition of the electronic fuel injection system,
ECM/PCM indicates whether a trouble has occurred in the immobi-
lizer control system or not by causing the immobilizer indicator lamp
to flash or turn ON.
Immobilizer indicator lamp is ON:
No trouble exists in the immobilizer control system.
Immobilizer indicator lamp is flashing:
ECM/PCM or Immobilizer Control Module has detected some
trouble in the immobilizer control system.
NOTE:
As soon as the ignition switch is turned ON, ECM/PCM and Im-
mobilizer Control Module diagnose if a trouble has occurred
in the immobilizer control system. While the diagnosis is being
made, the Immobilizer indicator lamp stays ON and if the diag-
nosis result is "abnormal", it immediately changes to flashing
TIME (sec.)
but if the result is "normal", it remains ON. Diagnosis takes
0.5
about 3 seconds at maximum.
When ECM/PCM and Immobilizer Control Module detects a
trouble which has occurred in the above areas, it stores DTC corre-
sponding to the exact trouble area in ECM/PCM and Immobilizer
Control Module memory.
DTCs stored in memory of each controller (Immobilizer Control
Module and ECM/PCM) can be read by using the procedure de-
scribed in "DIAGNOSTIC TROUBLE CODE CHECK (IMMOBILIZ-
ER CONTROL MODULE)" and "DIAGNOSTIC TROUBLE CODE
CHECK (ECM/PCM)" in this section.
IMMOBILIZER CONTROL SYSTEM (IF EQUIPPED) 8G-5