Suzuki GRAND VITARA JB416 Service Manual page 444

10C-6 Immobilizer Control System:
Troubleshooting
Step
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?
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?
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?
4 Diagnostic Trouble Code (DTC) check
Is any DTC other than P1615 detected in Step 3?
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?
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?
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
Action
Ω
or less?
Yes
Go to Step 2.
The troubleshooting is
completed.
Go to Step 4.
Perform the
troubleshooting
referring to the
corresponding
flowchart.
Replace the steering
lock unit with a known-
good one and recheck.
Go to Step 7.
Go to Step 8.
No
The troubleshooting is
completed.
Go to Step 3.
Replace ECM with a
known-good one and
recheck.
Go to Step 5.
Go to Step 6.
Replace the steering
lock unit referring to
"Steering Lock
Assembly (Ignition
Switch) Removal and
Installation: in Section
6B in related manual".
Repair open or high
resistance in
malfunctional wire
circuit.