With Entry Start

ENGINE IMMOBILIZER SYSTEM DIAGNOSTIC TROUBLE CODE IDENTIFICATION

Diagnostic codes	Diagnostic items	Diagnostic code output check operation	Reference
B1571	[Reference Code Incompatibility]	Engine switch on (IG)	DIAGNOSTIC TROUBLE CODE CHART
B1572	[IMM Circuit Failure (Except Antenna Circuit)]	Engine switch on (IG)	Inspection steps
B1576	[EGI Control Module EEPROM]	Engine switch on (IG) Register the ECU communication ID	DTC B1576 EGI unit EEPROM
B1577	[IMM Control Module EEPROM]	Engine switch on (IG)	DTC B1577 Immobilizer unit EEPROM

CERTIFICATION ECU DIAGNOSTIC TROUBLE CODE IDENTIFICATION

Diagnostic codes	Diagnostic items	Diagnostic code output check operation	Reference
B2784	[Abnormal antenna coil]	With the shift lever in P* the electrical key transmitter sub-assembly is held against the engine switch and an engine start operation is performed by pressing and holding the engine switch when the transmitter battery is depleted.	Inspection steps
B278A	[Abnormal immobilizer power supply]	With the shift lever in P* the electrical key transmitter is held against the engine switch and an engine start operation is performed by pressing and holding the engine switch when the transmitter battery is depleted.	DTC B278A Faulty immobilizer power
B278D	[ID code box recognition evaluation abnormal]	Always	DTC B278D ID code box recognition error