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DIAGNOSTICS
ENGINE IMMOBILIZER SYSTEM (1ND--TV)
05--395
COROLLA Supplement (RM1129E)
CODE 31 IS OUTPUT (UNMATCHED KEY CODE)
CIRCUIT DESCRIPTION
This code is output when a key with a key code that has not been registered in the ECU is inserted into the
ignition key cylinder.
Code No.
Detection Condition
Trouble Area
31
Key with unregistered key code is inserted
Key
INSPECTION PROCEDURE
1
REREGISTER KEY
(a)
Reregister the key and check that the engine starts with the key.
OK: Engine starts
NG
REPLACE KEY
OK
END
05B0G--13
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TOYOTA COROLLA REPAIR MANUAL SUPP 1129E