Table of Contents
DTC B3043 W-line CKT Malf (Short to Battery) for M13 Engine Model
Wiring Circuit
Refer to "Wiring Circuit for M13 Engine Model" on page 8G-2.
DTC Detecting Condition and Trouble Area
DTC Detecting Condition
W-line circuit voltage is high.
Troubleshooting
Step
1
1) Ignition switch at OFF position.
2) Disconnect connector from ECM.
3) Check for proper connection to ECM at
E21-11.
Is it in good condition?
2
1) Connect connector to ECM.
2) Measure voltage between G17-7 terminal of
immobilizer control module and body
ground with ignition switch at OFF position
and scan tool disconnected.
Is it 0 – 1 V?
Action
1. G17-7 terminal
[A]: Fig. for step 2
IMMOBILIZER CONTROL SYSTEM (G10/M13 ENGINES) 8G-9
Trouble Area
W-line circuit is shorted to power supply circuit.
Yes
Go to step 2.
Substitute a known-good
ECM according to "Proce-
dure after ECM Replace-
ment" under "Registration
Procedure of Immobilizer
System Components",
and recheck.
No
Repair or replace.
W-line (WHT/BLK) is
shorted to power supply
circuit.
Repair and recheck.
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