8G-8 IMMOBILIZER CONTROL SYSTEM (G10/M13 ENGINES)
DTC B3042 W-line CKT Malf (Short to Ground) for M13 Engine Model
Wiring Circuit
Refer to “Wiring Circuit for M13 Engine Model” on page 8G-2.
DTC Detecting Condition and Trouble Area
Troubleshooting
DTC Detecting Condition Trouble Area
W-line circuit voltage is low. W-line circuit is shorted to ground.
Step Action Yes No
1 1) Ignition switch at OFF position.
2) Disconnect connector from ECM.
3) Check for proper connection to ECM at
E21-11 terminal.
Is it in good condition?
Go to step 2. Repair or replace.
2 1) Connect connector to ECM.
2) Measure voltage between G17-7 terminal of
immobilizer control module and body
ground with ignition switch at ON position.
Is it 10 – 14 V?
Substitute a known-good
ECM according to “Proce-
dure After ECM Replace-
ment” under “Registration
Procedure of Immobilizer
System Components”,
and recheck.
W-line (WHT/BLK) is
shorted to ground.
Repair and recheck.
1. G17-7 terminal
[A]:
Fig. for step 2
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