ON-BOARD DIAGNOSTIC FUNCTION


id080200100500


Self-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 CAN.

DTC table

DTC

System malfunction location

Mazda Modular Diagnostic System (M-MDS) display

Air bag system warning light

Flashing pattern

Priority ranking

B1017
59
4
Deployment prohibited because configuration is not set
B1144
45
11
Driver-side side air bag sensor No.2 system internal circuit disabled
B1145
Driver-side side air bag sensor No.2 system communication error
B1146
46
10
Passenger-side side air bag sensor No.2 system internal circuit disabled
B1147
Passenger-side side air bag sensor No.2 system communication error
B1231
13
3
SAS control module activation (deployment) control freeze
B1317
Air bag system warning light is illuminated all the time
SAS control module power supply voltage increases (16.1 V or more)
B1318
Air bag system warning light is illuminated all the time
SAS control module power supply voltage decreases (less than 8 V)
B1342
12
2
SAS control module (internal circuit abnormal)
Continuously illuminated
1
SAS control module (DTC 12 detection circuit malfunction)
B1868
Air bag system warning light malfunction
B1871
56
21
Passenger air bag deactivation (PAD) switch system circuit disabled
B1877
38
16
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
39
15
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
18
22
Passenger air bag deactivation (PAD) indicator circuit open or short to body ground
B1885
38
16
Driver-side pre-tensioner seat belt circuit resistance low
B1886
39
15
Passenger-side pre-tensioner seat belt circuit resistance low
B1890
18
22
Passenger air bag deactivation (PAD) indicator circuit short to power supply
B1913
19
14
Driver-side air bag module circuit short to body ground
21
13
Passenger-side air bag module circuit short to body ground
B1916
19
14
Driver-side air bag module circuit short to power supply
B1925
21
13
Passenger-side air bag module circuit short to power supply
B1932
19
14
Driver-side air bag module circuit resistance high
B1933
21
13
Passenger-side air bag module circuit resistance high
B1934
19
14
Driver-side air bag module circuit resistance low
B1935
21
13
Passenger-side air bag module circuit resistance low
B1992
22
18
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
17
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
B2296
42
9
Crash zone sensor (communication error, internal circuit abnormal)
B2444
43
8
Driver-side side air bag sensor No.1 (internal circuit abnormal)
B2445
44
7
Passenger-side side air bag sensor No.1 (internal circuit abnormal)
B2477
54
5
Configuration error
B2773
24
20
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
19
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
B2867
58
6
Poor connection of any SAS control module connectors
U2017
43
8
Driver-side side air bag sensor No.1 (communication error)
U2018
44
7
Passenger-side side air bag sensor No.1 (communication error)
U0073
14
12
CAN system communication error
U0151
Communication error to SAS control module
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

Description

Unit/Condition

Terminal

BUCKLE_D
Driver-side buckle switch status
Buckled/Unbuckled
2T
BUCKLE_P
Passenger-side buckle switch status
Buckled/Unbuckled
2H
CCNT_RCM
Number of continuous DTCs
IGN_V_2
IG1 voltage
V
1W
I_PAD_SW
PAD switch status
On/Off
1H, 1I
PSAB_DepSt
Passenger-side air bag module deployment status
Inactive/Active
RES_AB_D
Driver-side air bag module resistance
ohm
1S, 1V
RES_AB_P
Passenger-side air bag module resistance
ohm
1M, 1P
RES_CAB_D
Driver-side curtain air bag module resistance
ohm
2V, 2Y
RES_CAB_P
Passenger-side curtain air bag module resistance
ohm
2A, 2D
RES_PT_D
Driver-side pre-tensioner seat belt resistance
ohm
2P, 2S
RES_PT_P
Passenger-side pre-tensioner seat belt resistance
ohm
2G, 2J
RES_SAB_D
Driver-side side air bag module resistance
ohm
2M, 2O
RES_SAB_P
Passenger-side side air bag module resistance
ohm
2I, 2L