Dtc P1625: Immobilizer Antenna Error; Dtc P1636: Immobilizer Information Registration Failure - Suzuki Swift Sport 2004 Service & Repair Manual

Step
3 Registration of unregistered ignition key with ECM
1) Register unregistered ignition key with ECM referring to
"Registration of the Ignition Key".
Was registration of ignition key completed?
4 Registration of the spare ignition key
1) Register the spare ignition key referring to "Registration
of the Ignition Key".
Was registration of spare ignition key completed?

DTC P1625: Immobilizer Antenna Error

Detecting Condition and Trouble Area
Detecting Condition
ICM
DTC Confirmation Procedure
1) Turn ignition switch to ON position.
2) Check DTC in ECM.
Troubleshooting
Step
1 Was "Immobilizer Control System Check" performed?
2 DTC confirmation
1) Clear DTC(s) referring to "Diagnostic Trouble Code
(DTC) Clearance".
2) Turn the ignition switch to OFF position.
3) Check ECM for DTC referring to "Diagnostic Trouble
Code (DTC) Check".
Is DTC P1625 still detected?

DTC P1636: Immobilizer Information Registration Failure

DTC Detecting Condition and Trouble Area
Detecting Condition
The registration of the immobilizer control system
information in ECM is failed.
Troubleshooting
Step
1 Was "Immobilizer Control System Check" performed?
2 DTC check of ECM
1) Check ECM for DTC referring to "DTC Check in Section
1A".
Is DTC P1674, P1675, P1678 and/or P1685 detected?
Action
Action
Action
Immobilizer Control System:
Yes
Unregistered ignition
key.
Replace ignition key
which cannot be
registered.
Trouble Area
• ICM
• ECM
Yes
Go to Step 2.
Replace ICM and
recheck DTC. If DTC
P1625 is still detected,
substitute a known-
good ECM and recheck.
Trouble Area
• CAN communication wire circuits
• BCM
• ECM
Yes
Go to Step 2.
Go to applicable DTC
diag. flow.
10C-14
No
Go to Step 4.
Substitute a known-
good ECM and recheck.
S7RS0BA304015
No
Go to "Immobilizer
Control System Check".
Intermittent trouble.
Check for intermittent
referring to "Intermittent
and Poor Connection
Inspection in Section
00".
S7RS0BA304016
No
Go to "Immobilizer
Control System Check".
Go to Step 3.