ON-BOARD DIAGNOSTIC FUNCTION [AIR BAG SYSTEM]

id0802001005a0


Self-Malfunction Diagnostic Function

•  The self-diagnostic function determines that there is a malfunction, outputs a signal, as a DTC, to the DLC-2, and at the same time, flashes the air bag system warning light to advise the driver of a malfunction.
•  The air bag system warning light illuminates or flashes to indicate a single DTC according to the present malfunction. (If there is more than one present malfunction, only one DTC will be displayed according to the preset priority ranking.)
•  The air bag system warning light will flash the DTC pattern for five cycles, and then will remain illuminated until the engine switch is turned to the LOCK position.
•  The self-diagnostic function consists of a present malfunction diagnostic and a past malfunction diagnostic.

DTC table

DTC

Malfunction location

Mazda modular diagnostic system (M-MDS) display

Air bag system warning light

Flashing pattern

Priority ranking
B1231
13
3
SAS control module activation (deployment) control freeze
B1317
—
Air bag system warning light is illuminated all the time.
—
The SAS control module power supply voltage increases (16.1 V or more)
B1318
—
Air bag system warning light is illuminated all the time
—
The SAS control module power supply voltage decreases (less than 9 V)
B1342
12
2
SAS control module
—
Air bag system warning light is illuminated all the time.
1
SAS control module (DTC 12 detection circuit malfunction)
B1869
—
Air bag system warning light is illuminated all the time.
1
Air bag system warning light system circuit open
—
Air bag system warning light is illuminated does not illuminate.
—
Air bag system warning light system circuit short to ground
B1870
—
Air bag system warning light is illuminated all the time.
1
Air bag system warning light system circuit short to power supply
B1877
33
10
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 ground
B1881
34
9
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 ground
B1885
33
10
Driver‐side pre-tensioner seat belt circuit resistance low
B1886
34
9
Passenger‐side pre-tensioner seat belt circuit resistance low
B1913
19
8
Driver-side air bag module circuit short to body ground
21
7
Passenger‐side air bag module circuit short to body ground
B1916
19
8
Driver-side air bag module circuit short to power supply
B1925
21
7
Passenger‐side air bag module system circuit short to power supply
B1932
19
8
Driver-side air bag module circuit resistance high
B1933
21
7
Passenger‐side air bag module circuit resistance high
B1934
19
8
Driver-side air bag module circuit resistance low
B1935
21
7
Passenger‐side air bag module circuit resistance low
B1992
22
12
Driver‐side side air bag module circuit short to power supply
B1993
Driver‐side side air bag module circuit short to ground
B1994
Driver‐side side air bag module circuit resistance high
B1995
Driver‐side side air bag module circuit resistance low
B1996
23
11
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
B2228
19
8
Driver-side air bag module assembly incorrect
B2230
B2232
B2234
B2229
21
7
Passenger‐side air bag module assembly incorrect
B2231
B2233
B2235
B2444
43
6
Driver-side side air bag sensor system (internal circuit disabled)
B2445
44
5
Passenger-side side air bag sensor system (internal circuit disabled)
B2867
31
4
Poor connection of any SAS control module connectors
U2017
43
6
Driver‐side side air bag sensor (communication error)
U2018
44
5
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.
•  An Mazda modular diagnostic system (M-MDS) is used to read out PID/data monitor information.

PID name (definition)

Unit/condition

Condition/specification

terminal
CONT_RCM
(Number of continuous DTC)
—
•  DTC is detected: 1—255
•  DTC is not detected: 0
—
CRSH_ST_D1
(Driver-side side air bag sensor communication state)
OK/
FAULT
•  Sensor normal: OK
•  Sensor communication error: FAULT
2Z, 2AA
CRSH_ST_D2
(Driver-side side air bag sensor circuit state)
OK/
FAULT
•  Sensor normal: OK
•  Sensor internal circuit error: FAULT
2Z, 2AA
CRSH_ST_P1
(Passenger-side side air bag sensor communication state)
OK/
FAULT
•  Sensor normal: OK
•  Sensor communication error: FAULT
2B, 2C
CRSH_ST_P2
(Passenger-side side air bag sensor circuit state)
OK/
FAULT
•  Sensor normal: OK
•  Sensor internal circuit error: FAULT
2B, 2C
D_PTENSFLT
(Driver-side pre-tensioner seat belt circuit state)
SQ_LOWRES
OPEN
SHRT_B+
SHRT_GND
Normal
•  Air bag module circuit resistance low: SQ_LOWRES
•  Related wiring harness circuit open: OPEN
•  Related wiring harness short to power supply: SHRT_B+
•  Related wiring harness short to ground: SHRT_GND
•  Related wiring harness normal: Normal
2P, 2S
DABAGR
(Driver-side air bag module resistance)
ohm
Under any condition: 1.5—3.7 ohm
1S, 1V
DR_PTENS
(Driver-side pre-tensioner seat belt resistance)
ohm
Under any condition: 1.5—3.1 ohm
2P, 2S
DS_AB
(Driver-side side air bag module resistance)
ohm
Under any condition: 1.4—3.2 ohm
2M, 2O
DS_AB_ST
(Driver-side side air bag module circuit state)
SQ_LOWRES
OPEN
SHRT_B+
SHRT_GND
Normal
•  Air bag module circuit resistance low: SQ_LOWRES
•  Related wiring harness circuit open: OPEN
•  Related wiring harness short to power supply: SHRT_B+
•  Related wiring harness short to ground: SHRT_GND
•  Related wiring harness normal: Normal
2M, 2O
DS1_STAT
(Driver-side air bag module circuit state)
SQ_LOWRES
OPEN
SHRT_B+
SHRT_GND
Normal
•  Air bag module circuit resistance low: SQ_LOWRES
•  Related wiring harness circuit open: OPEN
•  Related wiring harness short to power supply: SHRT_B+
•  Related wiring harness short to ground: SHRT_GND
•  Related wiring harness normal: Normal
1S, 1V
DSB_P_ST
(On demand driver-side pre-tensioner seat belt circuit state)
SQ_LOWRES
OPEN
SHRT_B+
SHRT_GND
Normal
•  Air bag module circuit resistance low: SQ_LOWRES
•  Related wiring harness circuit open: OPEN
•  Related wiring harness short to power supply: SHRT_B+
•  Related wiring harness short to ground: SHRT_GND
•  Related wiring harness normal: Normal
2P, 2S
IG_V_2
(System IG1 voltage value)
V
engine switch to ON position: B+
1W
OD_CRST_D1
(On demand driver-side side air bag sensor communication state)
OK/
FAULT
•  Sensor normal: OK
•  Sensor communication error: FAULT
2Z, 2AA
OD_CRST_D2
(On demand driver-side side air bag sensor circuit state)
OK/
FAULT
•  Sensor normal: OK
•  Sensor internal circuit error: FAULT
2Z, 2AA
OD_CRST_P1
(On demand passenger-side side air bag sensor communication state)
OK/
FAULT
•  Sensor normal: OK
•  Sensor communication error: FAULT
2B, 2C
OD_CRST_P2
(On demand passenger-side side air bag sensor circuit state)
OK/
FAULT
•  Sensor normal: OK
•  Sensor internal circuit error: FAULT
2B, 2C
OD_DAB1_ST
(On demand driver-side air bag module circuit state)
SQ_LOWRES
OPEN
SHRT_B+
SHRT_GND
Normal
•  Air bag module circuit resistance low: SQ_LOWRES
•  Related wiring harness circuit open: OPEN
•  Related wiring harness short to power supply: SHRT_B+
•  Related wiring harness short to ground: SHRT_GND
•  Related wiring harness normal: Normal
1S, 1V
OD_DSAB_ST
(On demand driver-side side air bag circuit state)
SQ_LOWRES
OPEN
SHRT_B+
SHRT_GND
Normal
•  Air bag module circuit resistance low: SQ_LOWRES
•  Related wiring harness circuit open: OPEN
•  Related wiring harness short to power supply: SHRT_B+
•  Related wiring harness short to ground: SHRT_GND
•  Related wiring harness normal: Normal
2M, 2O
OD_PAB1_ST
(On demand passenger-side air bag module circuit state)
SQ_LOWRES
OPEN
SHRT_B+
SHRT_GND
Normal
•  Air bag module circuit resistance low: SQ_LOWRES
•  Related wiring harness circuit open: OPEN
•  Related wiring harness short to power supply: SHRT_B+
•  Related wiring harness short to ground: SHRT_GND
•  Related wiring harness normal: Normal
1M, 1P
OD_PSAB_ST
(On demand passenger-side side air bag sensor circuit state)
SQ_LOWRES
OPEN
SHRT_B+
SHRT_GND
Normal
•  Air bag module circuit resistance low: SQ_LOWRES
•  Related wiring harness circuit open: OPEN
•  Related wiring harness short to power supply: SHRT_B+
•  Related wiring harness short to ground: SHRT_GND
•  Related wiring harness normal: Normal
2I, 2L
P_PTENSFLT
(Passenger-side pre-tensioner seat belt circuit state)
SQ_LOWRES
OPEN
SHRT_B+
SHRT_GND
Normal
•  Air bag module circuit resistance low: SQ_LOWRES
•  Related wiring harness circuit open: OPEN
•  Related wiring harness short to power supply: SHRT_B+
•  Related wiring harness short to ground: SHRT_GND
•  Related wiring harness normal: Normal
2G, 2J
PABAGR
(Passenger-side air bag module resistance)
ohm
Under any condition: 1.4—2.9 ohm
1M, 1P
PS_AB
(Passenger-side side air bag module resistance)
ohm
Under any condition: 1.4—3.2 ohm
2I, 2L
PS_AB_ST
(Passenger-side side air bag sensor circuit state)
SQ_LOWRES
OPEN
SHRT_B+
SHRT_GND
Normal
•  Air bag module circuit resistance low: SQ_LOWRES
•  Related wiring harness circuit open: OPEN
•  Related wiring harness short to power supply: SHRT_B+
•  Related wiring harness short to ground: SHRT_GND
•  Related wiring harness normal: Normal
2I, 2L
PS_PTENS
(Passenger-side pre-tensioner seat belt resistance)
ohm
Under any condition: 1.5—3.1 ohm
2G, 2J
PS1_STAT
(Passenger-side air bag module circuit state)
SQ_LOWRES
OPEN
SHRT_B+
SHRT_GND
Normal
•  Air bag module circuit resistance low: SQ_LOWRES
•  Related wiring harness circuit open: OPEN
•  Related wiring harness short to power supply: SHRT_B+
•  Related wiring harness short to ground: SHRT_GND
•  Related wiring harness normal: Normal
1M, 1P
PSB_P_ST
(On demand passenger-side pre-tensioner seat belt circuit state)
SQ_LOWRES
OPEN
SHRT_B+
SHRT_GND
Normal
•  Air bag module circuit resistance low: SQ_LOWRES
•  Related wiring harness circuit open: OPEN
•  Related wiring harness short to power supply: SHRT_B+
•  Related wiring harness short to ground: SHRT_GND
•  Related wiring harness normal: Normal
2G, 2J