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 ignition 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

WDS or equivalent

Air bag system warning light

Flashing pattern

Priority ranking

B1017
14

4
Air bag diagnostic monitor ground circuit open
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

13
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

12
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
B1884
18

18
Passenger air bag deactivation (PAD) indicator circuit open or short to body ground
B1885
33

13
Driver-side pre-tensioner seat belt circuit resistance low
B1886
34

12
Passenger-side pre-tensioner seat belt circuit resistance low
B1890
18

18
Passenger air bag deactivation (PAD) indicator circuit short to power supply
B1913
19

11
Driver-side air bag module circuit short to body ground
21

10
Passenger-side air bag module circuit short to body ground
B1916
19

11
Driver-side air bag module circuit short to power supply
B1925
21

10
Passenger-side air bag module system circuit short to power supply
B1932
19

11
Driver-side air bag module circuit resistance high
B1933
21

10
Passenger-side air bag module circuit resistance high
B1934
19

11
Driver-side air bag module circuit resistance low
B1935
21

10
Passenger-side air bag module circuit resistance low
B1992
22

15
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

14
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

11
Driver-side air bag module assembly incorrect
B2230
B2232
B2234
B2229
21

10
Passenger-side air bag module assembly incorrect
B2231
B2233
B2235
B2444
43

8
Driver-side side air bag sensor system (internal circuit disabled)
B2445
44

7
Passenger-side side air bag sensor system (internal circuit disabled)
B2477
54

5
Configuration error
B2773
24

17
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 ground
B2776
Driver-side curtain air bag module circuit short to power supply
B2777
25

16
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 ground
B2780
Passenger-side curtain air bag module circuit short to power supply
B2867
31

6
Poor connection of any SAS control module connectors
U2017
43

8
Driver-side side air bag sensor (communication error)
U2018
44

7
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 SST (WDS or equivalent) 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 air bag sensor communication state)
OK/
FAULT
• Sensor normal: OK
• Sensor communication error: FAULT
2Z, 2AA
CRSH_ST_D2
(Driver-side air bag sensor circuit state)
OK/
FAULT
• Sensor normal: OK
• Sensor internal circuit error: FAULT
2Z, 2AA
CRSH_ST_P1
(Passenger-side air bag sensor communication state)
OK/
FAULT
• Sensor normal: OK
• Sensor communication error: FAULT
2B, 2C
CRSH_ST_P2
(Passenger-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_CURTN
(Driver-side curtain air bag module resistance)
ohm
Under any condition: 1.4-3.2 ohm
2Y, 2V
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)
SHRT_B+
SHRT_GND
OPEN
SQ_LOWRES
Normal
• Related wiring harness short to power supply: SHRT_B+
• Related wiring harness short to ground: SHRT_GND
• Related wiring harness circuit open: OPEN
• Air bag module circuit resistance low: SQ_LOWRES
• Related wiring harness normal: Normal
2M, 2O
DS_CURT_ST
(Driver-side curtain air bag module circuit state)
SHRT_B+
SHRT_GND
OPEN
SQ_LOWRES
Normal
• Related wiring harness short to power supply: SHRT_B+
• Related wiring harness short to ground: SHRT_GND
• Related wiring harness circuit open: OPEN
• Air bag module circuit resistance low: SQ_LOWRES
• Related wiring harness normal: Normal
2V, 2Y
DS1_STAT
(Driver-side air bag module circuit state)
SHRT_GND
SHRT_B+
OPEN
SQ_LOWRES
Normal
• Related wiring harness short to ground: SHRT GND
• Related wiring harness short to power supply: SHRT B+
• Related wiring harness circuit open: OPEN
• Air bag module circuit resistance low: SQ_LOWRES
• 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
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
1I
IG_V_2
(System IG1 voltage value)
V
• Ignition switch to ON position: B+
• Other: 0 V
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_D_CURT
(On demand driver-side curtain air bag module circuit state)
SHRT_B+
SHRT_GND
OPEN
SQ_LOWRES
Normal
• Related wiring harness short to power supply: SHRT_B+
• Related wiring harness short to ground: SHRT_GND
• Related wiring harness circuit open: OPEN
• Air bag module circuit resistance low: SQ_LOWRES
• Related wiring harness normal: Normal
2V, 2Y
OD_DAB1_ST
(On demand driver-side air bag module circuit state)
SHRT_GND
SHRT_B+
OPEN
SQ_LOWRES
Normal
• Related wiring harness short to ground: SHRT_GND
• Related wiring harness short to power supply: SHRT_B+
• Related wiring harness circuit open: OPEN
• Air bag module circuit resistance low: SQ_LOWRES
• Related wiring harness normal: Normal
1S, 1V
OD_DSAB_ST
(On demand driver-side side air bag circuit state)
SHRT_B+
SHRT_GND
OPEN
SQ_LOWRES
Normal
• Related wiring harness short to power supply: SHRT_B+
• Related wiring harness short to ground: SHRT_GND
• Related wiring harness circuit open: OPEN
• Air bag module circuit resistance low: SQ_LOWRES
• Related wiring harness normal: Normal
2M, 2O
OD_P_CURT
(On demand passenger-side curtain air bag module circuit state)
SHRT_B+
SHRT_GND
OPEN
SQ_LOWRES
Normal
• Related wiring harness short to power supply: SHRT_B+
• Related wiring harness short to ground: SHRT_GND
• Related wiring harness circuit open: OPEN
• Air bag module circuit resistance low: SQ_LOWRES
• Related wiring harness normal: Normal
2A, 2D
OD_PAB1_ST
(On demand passenger-side air bag module circuit state)
SHRT_GND
SHRT_B+
OPEN
SQ_LOWRES
Normal
• Related wiring harness short to ground: SHRT_GND
• Related wiring harness short to power supply: SHRT_B+
• Related wiring harness circuit open: OPEN
• Air bag module circuit resistance low: SQ_LOWRES
• Related wiring harness normal: Normal
1M, 1P
OD_PSAB_ST
(On demand passenger-side side air bag sensor circuit state)
SHRT_B+
SHRT_GND
OPEN
SQ_LOWRES
Normal
• Related wiring harness short to power supply: SHRT_B+
• Related wiring harness short to ground: SHRT_GND
• Related wiring harness circuit open: OPEN
• Air bag module circuit resistance low: SQ_LOWRES
• 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)
SHRT_B+
SHRT_GND
OPEN
SQ_LOWRES
Normal
• Related wiring harness short to power supply: SHRT_B+
• Related wiring harness short to ground: SHRT_GND
• Related wiring harness circuit open: OPEN
• Air bag module circuit resistance low: SQ_LOWRES
• Related wiring harness normal: Normal
2I, 2L
PS_CURTN
(Passenger-side curtain air bag module resistance)
ohm
Under any condition: 1.4-3.2 ohm
2A, 2D
PS_CURT_ST
(Passenger-side curtain air bag module circuit state)
SHRT_B+
SHRT_GND
OPEN
SQ_LOWRES
Normal
• Related wiring harness short to power supply: SHRT_B+
• Related wiring harness short to ground: SHRT_GND
• Related wiring harness circuit open: OPEN
• Air bag module circuit resistance low: SQ_LOWRES
• Related wiring harness normal: Normal
2A, 2D
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)
SHRT_GND
SHRT_B+
OPEN
SQ_LOWRES
Normal
• Related wiring harness short to ground: SHRT_GND
• Related wiring harness short to power supply: SHRT_B+
• Related wiring harness circuit open: OPEN
• Air bag module circuit resistance low: SQ_LOWRES
• 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