#
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