Immobilizer System - Keyless Entry System

DTC CHART - IMMOBILIZER SYSTEM - KEYLESS ENTRY SYSTEM

DTC				Detection condition	Action
Security light flashing pattern		M-MDS display
Security light flashing pattern		Instrument cluster	PCM
11	Courtesy of MAZDA MOTORS CORP.	B1681	P1260	No detected communication with the coil antenna	<SECURITY LIGHT 11, DTC B1681.P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)] .
12	Courtesy of MAZDA MOTORS CORP.	B2103	P1260	Coil antenna malfunction The PCM determined a malfunction in the coil antenna even though it is normal.	<SECURITY LIGHT 12, DTC B2103.P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]
13	Courtesy of MAZDA MOTORS CORP.	B1600	P1260	The key ID number data cannot be read.	<SECURITY LIGHT 13, DTC 81600.P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]
13	Courtesy of MAZDA MOTORS CORP.	B2431	P1260	Key ID number registration error	<SECURITY LIGHT 13, DTC B2431.P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]
14	Courtesy of MAZDA MOTORS CORP.	B1602	P1260	The instrument cluster cannot read key ID number data normally.	<SECURITY LIGHT 14, DTC B1602.P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]
15	Courtesy of MAZDA MOTORS CORP.	B1601	P1260	The instrument cluster has detected unregistered key ID number.	<SECURITY LIGHT 15, DTC B1601.P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]
16	Courtesy of MAZDA MOTORS CORP.	U2510	P1260	Communication error between the instrument cluster and the PCM (no response)	<SECURITY LIGHT 16, DTC U2510.P1260, U1147.P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]
16	Courtesy of MAZDA MOTORS CORP.	U1147	P1260	Communication error between the instrument cluster and the PCM (mismatched conditions)
21	Courtesy of MAZDA MOTORS CORP.	B1213	P1260	Only one key ID number is registered.	<SECURITY LIGHT 21, DTC B1213.P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]
22	Courtesy of MAZDA MOTORS CORP.	B2141	P1260	Communication error between the instrument cluster and the PCM (data transfer error)	<SECURITY LIGHT 22, DTC B2141.P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]
23	Courtesy of MAZDA MOTORS CORP.	B2139	P1260	ID number data in the PCM and the instrument cluster do not match.	<SECURITY LIGHT 23, DTC B2139.P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]
Not illuminated		B1342	-	Instrument cluster malfunction	<DTC B1342 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]