ON-BOARD DIAGNOSTIC FUNCTION [AIR BAG SYSTEM]

id0802a0100500


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
B1047
22
6
Driver-side side air bag module assembly incorrect
B104B
63
11
Driver-side side air bag sensor assembly incorrect
B104C
64
12
Passenger-side side air bag sensor assembly incorrect
B104D
42
10
Crash zone sensor assembly incorrect
B104F
64
12
Passenger-side air bag sensor system internal circuit disabled
B1051
63
11
Driver-side side air bag sensor system internal circuit disabled
B1055
23
7
Passenger-side side air bag module assembly incorrect
B1058
19
4
Driver-side air bag module assembly incorrect
B2228
B2230
B2232
B2234
B1059
21
5
Passenger-side air bag module assembly incorrect
B2229
B2231
B2233
B2235
B1318
—
Continuously illuminated
—
SAS control module power supply voltage decreases (less than 9 V)
B1342
12
3
SAS control module
B1869
—
Continuously illuminated
—
Air bag system warning light circuit open
—
Does not illuminate
—
Air bag system warning light circuit short to body ground
B1871
56
12
Passenger air bag deactivation (PAD) switch system circuit disabled
B1877
33
8
Driver-side pre-tensioner seat belt circuit open circuit or 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
9
Passenger-side pre-tensioner seat belt circuit open circuit or 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
13
Passenger air bag deactivation (PAD) indicator circuit open or short to body ground
B1885
33
8
Driver-side pre-tensioner seat belt circuit resistance low
B1886
34
9
Passenger-side pre-tensioner seat belt circuit resistance low
B1916
19
4
Driver-side air bag module circuit short to power supply
B1925
21
5
Passenger-side air bag module circuit short to power supply
B1932
19
4
Driver-side air bag module circuit open circuit or resistance high
B1933
21
5
Passenger-side air bag module circuit open circuit or resistance high
B1934
19
4
Driver-side air bag module circuit resistance low
B1935
21
5
Passenger-side air bag module circuit resistance low
B1936
19
4
Driver-side air bag module circuit short to body ground
B1938
21
5
Passenger-side air bag module circuit short to body ground
B1992
22
6
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 open circuit or resistance high
B1995
Driver-side side air bag module circuit resistance low
B1996
23
7
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 open circuit or resistance high
B1999
Passenger-side side air bag module circuit resistance low
B2226
42
10
Crash zone sensor internal circuit disabled
B2227
Crash zone sensor system communication error
B2477
54
1
Configuration error
B2856
42
10
Crash zone sensor system communication data error
B2867
31
2
Poor connection of any SAS control module connectors
B2886
64
12
Passenger-side air bag sensor system communication data error
B2887
63
11
Driver-side air bag sensor system communication data error
U2017
63
11
Driver-side side air bag sensor system communication error
U2018
64
12
Passenger-side side air bag sensor system 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
—
CR2D_Comm
(Driver-side side air bag sensor system communication data error)
OK/
FAULT
•  Sensor normal: OK
•  Sensor communication malfunction: FAULT
2C, 2F
CR2D_Inter
(Driver-side side air bag sensor system internal circuit disabled)
OK/
FAULT
•  Sensor normal: OK
•  Sensor internal malfunction: FAULT
2C, 2F
CR2D_Mount
(Driver-side side air bag sensor assembly incorrect)
OK/
FAULT
•  Sensor normal: OK
•  Sensor Install malfunction: FAULT
2C, 2F
CR2D_Short
(Driver-side side air bag sensor system communication error)
OK/
FAULT
•  Sensor normal: OK
•  Sensor open or short circuit: FAULT
2C, 2F
CR2P_Comm
(Passenger-side side air bag sensor system communication data error)
OK/
FAULT
•  Sensor normal: OK
•  Sensor communication malfunction: FAULT
2X, 2AA
CR2P_Inter
(Passenger-side side air bag sensor system internal circuit disabled)
OK/
FAULT
•  Sensor normal: OK
•  Sensor internal malfunction: FAULT
2X, 2AA
CR2P_Mount
(Passenger-side side air bag sensor assembly incorrect)
OK/
FAULT
•  Sensor normal: OK
•  Sensor Install malfunction: FAULT
2X, 2AA
CR2P_Short
(Passenger-side side air bag sensor system communication error)
OK/
FAULT
•  Sensor normal: OK
•  Sensor open or short circuit: FAULT
2X, 2AA
IGN_V_2
(IG1 voltage)
V
Ignition switch is at ON: B+
—
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
—
RES_AB_D
(Driver-side air bag module resistance)
ohm
Under any condition: 1.5—4.7 ohms
1A, 1D
RES_AB_P
(Passenger-side air bag module resistance)
ohm
Under any condition: 1.3—4.7 ohms
1S, 1V
RES_PT_D
(Driver-side pre-tensioner seat belt resistance)
ohm
Under any condition: 1.3—4.7 ohms
2A, 2D
RES_PT_P
(Passenger-side pre-tensioner seat belt resistance)
ohm
Under any condition: 1.3—4.7 ohms
2V, 2Y
RES_SAB_D
(Driver-side side air bag module resistance)
ohm
Under any condition: 1.3—4.7 ohms
2G, 2J
RES_SAB_P
(Passenger-side side air bag module resistance)
ohm
Under any condition: 1.3—4.7 ohms
2P, 2S