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 disconnection.


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 K-Line.

DTC table

DTC

System malfunction location

Mazda Modular Diagnostic System (M-MDS) display

Air bag system warning light

Flashing pattern

Priority ranking
B1046
24
18
Driver-side curtain air bag module and other air bag module circuits short
B1047
22
16
Driver-side side air bag module and other air bag module circuits short
B1048
21
11
Passenger-side air bag module and other air bag module circuits short
B1049
34
13
Passenger-side pre-tensioner seat belt and other air bag module circuits short
B104B
43
7
Driver-side side air bag sensor No. 1 and other sensor circuits short to power supply
B104C
44
6
Passenger-side side air bag sensor No.1 and other sensor circuits short to power supply
B104D
42
10
Crash zone sensor and other sensor circuits short to power supply
B104E
43
7
Driver-side side air bag sensor No.1 circuit open or short
B104F
44
6
Passenger-side side air bag sensor No.1 (internal circuit abnormal)
B1050
Passenger-side side air bag sensor No.1 circuit open or short
B1051
43
7
Driver-side side air bag sensor No.1 (internal circuit abnormal)
B1054
33
14
Driver-side pre-tensioner seat belt and other air bag module circuits short
B1055
23
15
Passenger-side side air bag module and other air bag module circuits short
B1056
25
17
Passenger-side curtain air bag module and other air bag module circuits short
B1057
19
12
Driver-side air bag module and other air bag module circuits short
B105A
-
Continuously illuminated
1
SAS control module activation (deployment) control frequency error
B105B
46
9
Driver-side side air bag sensor No. 2 and other sensor circuits short to power supply
B105F
47
8
Passenger-side side air bag sensor No. 2 and other sensor circuits short to power supply
B110C
46
9
Driver-side side air bag sensor No. 2 circuit open or short
B110D
47
8
Passenger-side side air bag sensor No. 2 circuit open or short
B110E
46
9
Driver-side side air bag sensor No.2 ID mismatch
B110F
47
8
Passenger-side side air bag sensor No.2 ID mismatch
B1144
46
9
Driver-side side air bag sensor No. 2 (internal circuit abnormal)
B1145
Driver-side side air bag sensor No. 2 (communication error)
B1146
47
8
Passenger-side side air bag sensor No. 2 (internal circuit abnormal)
B1147
Passenger-side side air bag sensor No. 2 (communication error)
B1231
13
3
SAS control module activation (deployment) control freeze
B1317
-
Continuously illuminated
1
SAS control module power supply voltage increases (18.1 V or more)
B1318
SAS control module power supply voltage decreases (less than 8 V)
B1342
12
2
SAS control module (internal circuit abnormal)
-
Continuously illuminated
1
B1868
-
-
1
Air bag system warning light malfunction
B1877
33
14
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
34
13
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
B1885
33
14
Driver-side pre-tensioner seat belt circuit resistance low
B1886
34
13
Passenger-side pre-tensioner seat belt circuit resistance low
B1916
19
12
Driver-side air bag module circuit short to power supply
B1921
-
Continuously illuminated
1
Air bag diagnostic monitor ground circuit open
B1925
21
11
Passenger-side air bag module circuit short to power supply
B1932
19
12
Driver-side air bag module circuit resistance high
B1933
21
11
Passenger-side air bag module circuit resistance high
B1934
19
12
Driver-side air bag module circuit resistance low
B1935
21
11
Passenger-side air bag module circuit resistance low
B1936
19
12
Driver-side air bag module circuit short to body ground
B1938
21
11
Passenger-side air bag module circuit short to body ground
B1992
22
16
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
23
15
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
42
10
Crash zone sensor (internal circuit abnormal)
B2227
Crash zone sensor (communication error)
B2477
54
5
Configuration error
B2773
24
18
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
25
17
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
42
10
Crash zone sensor circuit short
B2856
Crash zone sensor ID mismatch
B2886
44
6
Passenger-side side air bag sensor No.1 ID mismatch
B2887
43
7
Driver-side side air bag sensor No.1 ID mismatch
U2017
43
7
Driver-side side air bag sensor No. 1 (communication error)
U2018
44
6
Passenger-side side air bag sensor No. 1 (communication error)
U0073
14
4
CAN system communication error
U0100
-
-
1
Communication error to PCM
U0155
Communication error to instrument cluster


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)

Operation Condition (Reference)

Unit/Condition

Terminal
BUCKLE_D
Driver-side buckle switch status
Unbuckled/Buckled
2W
BUCKLE_P
Passenger-side buckle switch status
Unbuckled/Buckled
2C
CCNT_RCM
Number of continuous DTCs
―
―
IGN_V
IG1 voltage
V
1D
P_BELT_SSR
Occupancy sensor status
On/Off
2AF
RES_AB_D
Driver-side air bag module resistance
ohm
1I, 1M
RES_AB_P
Passenger-side air bag module resistance
ohm
1J, 1N
RES_CAB_D
Driver-side curtain air bag module resistance
ohm
2AG, 2AK
RES_CAB_P
Passenger-side curtain air bag module resistance
ohm
2AH, 2AL
RES_PT_D
Driver-side pre-tensioner seat belt resistance
ohm
2N, 2J
RES_PT_P
Passenger-side pre-tensioner seat belt resistance
ohm
2A, 2E
RES_SAB_D
Driver-side side air bag module resistance
ohm
2B, 2F
RES_SAB_P
Passenger-side side air bag module resistance
ohm
2I, 2M