8G-4 IMMOBILIZER CONTROL SYSTEM (G10/M13 ENGINES)
Diagnosis
Diagnostic Flow Table for M13 Engine Model
Step Action Yes No
1 Turn ignition switch to start engine.
Does engine run?
Go to step 5. Go to step 2.
2 W-line circuit check
Measure terminal voltage of immobilizer control
module connector G17-7.
Is it 10 – 14 V with ignition switch at ON posi-
tion, 0 – 1 V with ignition switch at OFF posi-
tion?
W-line circuit is in good
condition.
Go to step 3.
W-line circuit open or
short
Check and repair.
Then, go to step 3.
3 Check for DTC referring to “Diagnostic Trouble
Code (DTC) Check” in Section 6-2.
Is there any DTC(s)?
Go to step 4. Go to step 5.
4 Check, repair and/or perform necessary regis-
tration procedure according to flow table corre-
sponding to DTC(s).
Is there other DTC(s)?
Repeat step 4 until no
DTC is indicated.
Go to step 5.
5 Check for DTC referring to “Diagnostic Trouble
Code (DTC) Check” in this section.
Is there any DTC(s)?
Go to step 6. Immobilizer control sys-
tem is in good condition.
If engine does not run,
electronic fuel injection
system is failed.
Proceed to “Engine and
Emission Control System
Check” in Section 6-2.
6 Check and repair according to flow table corre-
sponding to DTC(s).
Is there other DTC(s)?
Repeat step 6 until no
DTC is indicated.
Immobilizer control sys-
tem is in good condition.
If engine does not run,
electronic fuel injection
system is failed.
Proceed to “Engine and
Emission Control System
Check” in Section 6-2.
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