Suzuki SY413 Service Manual page 2354

8G-20 IMMOBILIZER CONTROL SYSTEM (IF EQUIPPED)
DTC31 TRANSPONDER CODE NOT REGISTERED
DESCRIPTION:
Immobilizer Control Module checks if Transponder code transmitted from ignition key and that registered in Immo-
bilizer Control Module match when ignition switch is ON. If there is no Transponder code registered in Immobilizer
Control Module, this DTC is set.
INSPECTION:
Register ignition key with built-in transponder by using Suzuki scan tool and performing following steps.
1) Register Transponder code in Immobilizer Control Module by performing procedure described in "How To Reg-
ister Ignition Key".
2) Turn ignition switch OFF, then turn it ON and check that DTC31 is not set.