Suzuki SY413 Service Manual page 5132

IMMOBILIZER CONTROL SYSTEM (IF EQUIPPED) 8A-3
DIAGNOSIS
PRECAUTIONS IN DIAGNOSING TROUBLES
PRECAUTIONS IN IDENTIFYING DIAGNOSTIC
TROUBLE CODE
D Before identifying diagnostic trouble code indicated by malfunc-
tion indicator lamp ("CHECK ENGINE" light), do not disconnect
coupler from immobilizer control module, battery cable from bat-
tery, immobilizer control module ground wire harness. Such dis-
connection will clear trouble codes for immobilizer control
system stored in memory of immobilizer control module.
D If abnormality or malfunction lies in two or more areas, malfunc-
tion indicator lamp ("CHECK ENGINE" light) indicates applica-
ble codes three times each.
D When immobilizer control module detects a trouble in immobiliz-
er control system, malfunction indicator lamp ("CHECK EN-
GINE" light) indicates trouble code(s) while the ignition switch is
turned ON.
PRECAUTION AFTER REPLACING FUEL PUMP
ASSEMBLY OR IMMOBILIZER CONTROL MODULE
D When Fuel Pump Assembly was replaced, including when re-
placed because rechecking by using a known-good Fuel Pump
Assembly was necessary during trouble diagnosis, be sure to
register Fuel Pump Assembly/Immobilizer Control Module code
in Fuel Pump Assembly and Immobilizer Control Module by per-
forming procedure described in "Procedure After Fuel Pump As-
sembly Replacement" in this section. If it is not registered, the
engine would not start and accurate trouble diagnosis would not
be assured.
D When Immobilizer Control Module was replaced, including
when replaced because rechecking by using a known-good Im-
mobilizer Control Module was necessary during trouble diagno-
sis, the Transponder code and Fuel Pump Assembly/
Immobilizer Control Module code must be registered in Immobi-
lizer Control Module and Fuel Pump Assembly/Immobilizer
Control Module code in Fuel Pump Assembly by performing pro-
cedure described in "Procedure After Immobilizer Control Mod-
ule Replacement" in this section. If they are not registered, the
engine would not start and accurate trouble diagnosis would not
be assured.
[NOTES ON SYSTEM CIRCUIT INSPECTION]
Refer to "Precautions for Electrical Circuit Service" and "Intermit-
tents And Poor Connection" in SECTION 0A.