ON-BOARD DIAGNOSTIC FUNCTION

id080200100500


Self-Malfunction Diagnostic Function


Malfunction detection function

•  Detects overall malfunctions in the air bag system-related parts.


Fail-safe function

•  If the SAS control module performance/function cannot be maintained due to any cause, the fail-safe function stops air bag system control and flashes the air bag system warning light to prevent the air bags from operating (deploying) accidentally.


Memory function

•  Stores malfunctions in the air bag system-related parts detected by the malfunction detection function, and the stored malfunction contents are not cleared even if the ignition switch is turned to the LOCK position or the negative battery cable is disconnected.


Display Function

•  When the malfunction detection function detects a malfunction, the air bag system warning light illuminates to advise the driver. Using the external tester communication function, DTCs can be output to the DLC-2 via the CAN line.

DTC table

DTC

System malfunction location

Mazda Modular Diagnostic System (M-MDS) display
B1046
Driver-side curtain air bag module and other air bag module circuits short
B1047
Driver-side side air bag module and other air bag module circuits short
B1048
Passenger-side air bag module and other air bag module circuits short
B1049
Passenger-side pre-tensioner seat belt and other air bag module circuits short
B104B
Driver-side side air bag sensor and other sensor circuits short to power supply
B104C
Passenger-side side air bag sensor and other sensor circuits short to power supply
B104D
Crash zone sensor and other sensor circuits short to power supply
B104E
Driver-side side air bag sensor circuit open or short
B104F
Passenger-side side air bag sensor (internal circuit abnormal)
B1050
Passenger-side side air bag sensor circuit open or short
B1051
Driver-side side air bag sensor (internal circuit abnormal)
B1053
Driver-side front buckle switch and other sensor circuits short to power supply
B1054
Driver-side pre-tensioner seat belt and other air bag module circuits short
B1055
Passenger-side side air bag module and other air bag module circuits short
B1056
Passenger-side curtain air bag module and other air bag module circuits short
B1057
Driver-side air bag module and other air bag module circuits short
B105A
SAS control module activation (deployment) control frequency error
B1231
SAS control module activation (deployment) control freeze
B1317
SAS control module power supply voltage increases (16.1 V or more)
B1318
SAS control module power supply voltage decreases (less than 9 V)
B1342
SAS control module
B1868
Air bag warning system light malfunction
B1871
Passenger air bag deactivation (PAD) switch system circuit disabled
B1877
Driver-side pre-tensioner seat belt circuit resistance high
B1878
Driver-side pre-tensioner seat belt circuit short to power supply
B1879
Driver-side pre-tensioner seat belt circuit short to body ground
B1881
Passenger-side pre-tensioner seat belt circuit resistance high
B1882
Passenger-side pre-tensioner seat belt circuit short to power supply
B1883
Passenger-side pre-tensioner seat belt circuit short to body ground
B1884
Passenger air bag deactivation (PAD) indicator circuit open or short to body ground
B1885
Driver-side pre-tensioner seat belt circuit resistance low
B1886
Passenger-side pre-tensioner seat belt circuit resistance low
B1890
Passenger air bag deactivation (PAD) indicator circuit short to power supply
B1916
Driver-side air bag module circuit short to power supply
B1925
Passenger-side air bag module circuit short to power supply
B1932
Driver-side air bag module circuit resistance high
B1933
Passenger-side air bag module circuit resistance high
B1934
Driver-side air bag module circuit resistance low
B1935
Passenger-side air bag module circuit resistance low
B1936
Driver-side air bag module circuit short to body ground
B1938
Passenger-side air bag module circuit short to body ground
B1992
Driver-side side air bag module circuit short to power supply
B1993
Driver-side side air bag module circuit short to body ground
B1994
Driver-side side air bag module circuit resistance high
B1995
Driver-side side air bag module circuit resistance low
B1996
Passenger-side side air bag module circuit short to power supply
B1997
Passenger-side side air bag module circuit short to body ground
B1998
Passenger-side side air bag module circuit resistance high
B1999
Passenger-side side air bag module circuit resistance low
B2226
Crash zone sensor (internal circuit abnormal)
B2227
Crash zone sensor (communication error)
B2432
Driver-side front buckle switch circuit open
B2433
Driver-side front buckle switch circuit open or short to power supply
B2434
Driver-side front buckle switch circuit short to body ground
B2435
Driver-side front buckle switch circuit resistance not within specification
B2477
Configuration error
B2773
Driver-side curtain air bag module circuit resistance low
B2774
Driver-side curtain air bag module circuit resistance high
B2775
Driver-side curtain air bag module circuit short to body ground
B2776
Driver-side curtain air bag module circuit short to power supply
B2777
Passenger-side curtain air bag module circuit resistance low
B2778
Passenger-side curtain air bag module circuit resistance high
B2779
Passenger-side curtain air bag module circuit short to body ground
B2780
Passenger-side curtain air bag module circuit short to power supply
B2855
Crash zone sensor circuit short
B2856
Crash zone sensor ID mismatch
B2886
Passenger-side side air bag sensor ID mismatch
B2887
Driver-side side air bag sensor ID mismatch
U2017
Driver-side side air bag sensor (communication error)
U2018
Passenger-side side air bag sensor (communication error)


PID/Data Monitoring Function

•  By using the PID/data monitoring function, the monitored item of the input/output signal, as set on the SAS control module, can be freely selected and read out in real-time.
•  The mazda modular diagnostic system (M-MDS) is used to read out PID/data monitor information.

PID/data monitor table

PID name (definition)

Unit/Condition

Operation Condition (Reference)

Terminal
CCNT_RCM
(Number of continuous DTCs)
―
•  DTCs detected: 1—255
•  No DTCs detected: 0
―
DABAGR
(Driver-side air bag module resistance)
Ohm
Under any condition: 1.5—3.7 ohms
1I, 1M
DFCURTRES
(Driver-side curtain air bag module resistance)
Ohm
Under any condition: 1.4—3.2 ohms
2AG, 2AK
DR_BUKL
(Driver-side buckle switch status)
Buckled/
Unbuckled
•  Driver-side buckle switch on: Buckled
•  Driver-side buckle switch off: Unbuckled
2W
DR_PTENS
(Driver-side pre-tensioner seat belt resistance)
Ohm
Under any condition: 1.5—3.1 ohms
2J, 2N
DS_AB
(Driver-side side air bag module resistance)
Ohm
Under any condition: 1.4—3.2 ohms
2B, 2F
I_PAD_FLT
(PAD switch status)
OK/
Fault
•  PAD switch normal: OK
•  PAD switch abnormal: Fault
1P
I_PAD_SW
(PAD switch status)
ON/
OFF
•  PAD switch is at PASS AIRBAG ON position: ON
•  PAD switch is at PASS AIRBAG OFF position: OFF
1P
PABAGR
(Passenger-side air bag module resistance)
Ohm
Under any condition: 1.4—2.9 ohms
1J, 1N
PFCURTRES
(Passenger-side curtain air bag module resistance)
Ohm
Under any condition: 1.4—3.2 ohms
2AH, 2AL
PS_AB
(Passenger-side side air bag module resistance)
Ohm
Under any condition: 1.4—3.2 ohms
2I, 2M
PS_PTENS
(Passenger-side pre-tensioner seat belt resistance)
Ohm
Under any condition: 1.5—3.1 ohms
2A, 2E