Diagnosis; Precautions In Diagnosing Troubles - Suzuki Grand Vitara XL-7 Service Manual

8G-6 IMMOBILIZER CONTROL SYSTEM (IF EQUIPPED)

DIAGNOSIS

Immobilizer Control Module have on-board diagnostic system (a
system self-diagnosis function) as described previously.
Investigate where the trouble is by referring to "IMMOBILIZER
DIAGNOSTIC FLOW TABLE" and "DIAGNOSTIC TROUBLE
CODE TABLE" on later pages.

PRECAUTIONS IN DIAGNOSING TROUBLES

[PRECAUTIONS IN IDENTIFYING DIAGNOSTIC TROUBLE
CODE]
Immobilizer Control Module
D Take a note of diagnostic trouble code indicated first.
[NOTES ON SYSTEM CIRCUIT INSPECTION]
Refer to "Precautions for Electrical Circuit Service" and "Intermit-
tents and Poor Connection" in Section 0A.
[Precaution after replacing ECM or Immobilizer Control Module]
D When ECM was replaced the ECM codes must be registered in
ECM and Immobilizer Control Module by performing procedure
described in "Procedure after ECM Replacement" in this section.
If it is not registered, ECM would not function as Immobilizer Con-
trol System 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 Immobiliz-
er Control Module was necessary during trouble diagnosis, the
Transponder code and ECM code must be registered in Immobi-
lizer Control Module by performing procedure described in "Pro-
cedure after Immobilizer Control Module Replacement" in this
section. If they are not registered, the engine would not start and
accurate trouble diagnosis would not be assured.