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8G-6 IMMOBILIZER CONTROL SYSTEM
Immobilizer Control System Check
Step
1
1) Check immobilizer indicator lamp while igni-
tion switch is ON (but without starting
engine). See Fig. 1.
Does immobilizer indicator lamp flash?
2
1) Check DTC stored in ECM referring to
"Immobilizer Control Module" under "DTC
Check" in this section.
Is there any DTC(s)?
3
1) Check DTC stored in Immobilizer Control
Module referring to "ECM" under "DTC
Check" in this section.
Is there any DTC(s)?
4
1) Check DTC stored in ECM referring to
"Immobilizer Control Module" under "DTC
Check" in this section.
Is there any DTC(s) for immobilizer control sys-
tem?
NOTE:
After replacing with a known-good ECM, register ECM/Immobilizer Control Module code in ECM by
performing procedure described in "Procedure After ECM Replacement" in this section.
[A]
Action
[A]: Fig. 1 for Step 1
Yes
Go to Step 3.
Go to "Table B –
Immobilizer Indicator
Lamp Check (Immobi-
lizer Indicator Lamp
Remains ON After
Engine Starts)" in this
section.
Go to flow table for
DTC No.
Go to flow table for
DTC No.
No
If immobilizer indicator lamp
remains ON, go to Step 2.
If immobilizer indicator lamp
remains OFF, go to "Table A
– Immobilizer Indicator Lamp
Check (Immobilizer Indicator
Lamp Does Not Light at Igni-
tion Switch ON)" in this sec-
tion.
Immobilizer control system is
in good condition.
Go to Step 4.
Substitute a known-good
ECM and recheck.
See NOTE below.
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