Inspection Of Immobilizer Control Module (Icm) And Its Circuit - Suzuki Grand Vitara 2011 Manual

10C-53 Immobilizer Control System: For Diesel Engine Model
Step
5 Check for communication circuit between steering lock
unit and keyless start control module
1) With the ignition switch at OFF position, disconnect
steering lock unit connector and keyless start control
module connector.
2) Check for proper connection at terminals and wires of
each connector referring to "Intermittent and Poor
Connection Inspection in Section 00".
3) If OK, check for open, short, and high resistance in each
circuit between steering lock unit and keyless start
control module. Refer to Step 2 in "DTC No. 11:
Communication Error with Steering Lock Unit in Section
10E".
Is each circuit in good condition?
6 Steering lock unit power supply check
1) Connect keyless start control module connector.
2) With ignition switch at ON position, check power supply
terminal voltage of steering lock unit connector. Refer to
"Keyless Start Control Module Power and Ground Circuit
Check in Section 10E".
Is voltage 4 – 6 V?

Inspection of Immobilizer Control Module (ICM) and Its Circuit

ICM and its circuit can be checked at ICM wiring connector by measuring voltage.
CAUTION
!
ICM cannot be checked by itself. It is strictly prohibited to connect voltmeter or ohmmeter to ICM with
connector disconnected from it.
Voltage Check
1) Remove ICM (1) from steering lock assembly or steering lock unit referring to "Immobilizer Control Module (ICM)
Removal and Installation: For Diesel Engine Model".
2) Connect ICM connector (2) to ICM.
Action Yes
Go to Step 6.
Replace steering lock
unit and recheck.
No
Repair malfunction part
and recheck.
Substitute a known-
good keyless start
control module and
recheck. If DTC B1718
is still detected,
substitute a known-
good ECM and recheck.
S6JB0AA324018