Suzuki GRAND VITARA JB416, Service Manual

Page: 444 / 474

10C-6 Immobilizer Control System:
Troubleshooting
Step Action Yes No
1 Diagnostic Trouble Code (DTC) confirmation
1) Clear DTC(s) referring to “Diagnostic Trouble Code
(DTC) Clearance: in related manual”.
2) Turn the ignition switch to OFF position.
3) Check if any DTC is detected referring to “Diagnostic
Trouble Code (DTC) Check: in related manual”.
Is DTC P1615 still detected?
Go to Step 2. The troubleshooting is
completed.
2 Registration of the ignition key
1) Turn the ignition switch to OFF position.
2) Turn the ignition switch to ON position, and register the
transponder code in the transponder in the ignition key
with ECM referring to “Registration of the Ignition Key:
in related manual”.
Was it possible to register the ignition key (transponder
code) in ECM?
The troubleshooting is
completed. Go to Step 3.
3 Diagnostic Trouble Code (DTC) check
1) Check if any DTC is detected referring to “Diagnostic
Trouble Code (DTC) Check: in related manual”.
Is any DTC detected?
Go to Step 4. Replace ECM with a
known-good one and
recheck.
4 Diagnostic Trouble Code (DTC) check
Is any DTC other than P1615 detected in Step 3?
Perform the
troubleshooting
referring to the
corresponding
flowchart. Go to Step 5.
5 Steering lock unit check
1) Turn on the engine start knob of the keyless start
system.
Is the engine start knob at ON position?
Replace the steering
lock unit with a known-
good one and recheck. Go to Step 6.
6 Steering lock unit operation check
1) Check the steering lock unit for operation referring to
“Ignition Switch Inspection: in Section 9C”.
Does the engine start knob operate as specified?
Go to Step 7. Replace the steering
lock unit referring to
“Steering Lock
Assembly (Ignition
Switch) Removal and
Installation: in Section
6B in related manual”.
7 Check for open in wire circuits between steering lock
unit and keyless start control module
1) Disconnect steering lock unit connector “G22” and
keyless start control module connector “G42”.
2) Measure resistance at the following connector terminals.
• Between “G22-3” terminal of steering lock unit
connector and “G42-20” terminal of keyless start
control module connector.
• Between “G22-7” terminal of steering lock unit
connector and “G42-29” terminal of keyless start
control module connector.
• Between “G22-8” terminal of steering lock unit
connector and “G42-30” terminal of keyless start
control module connector.
Is each resistance 1
Ω
or less?
Go to Step 8. Repair open or high
resistance in
malfunctional wire
circuit.