Dtc B3042 W-Line Ckt Malf (Short To Ground) For M13 Engine Model - Suzuki Wagon R Plus RB310 Service Manual

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
DTC Detecting Condition
W-line circuit voltage is low.
Troubleshooting
Step
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?
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?
Action
1. G17-7 terminal
[A]: Fig. for step 2
Trouble Area
W-line circuit is shorted to ground.
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 ground.
Repair and recheck.