#
ON-BOARD DIAGNOSTIC FUNCTION

BHE080201046T02

## 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 | System malfunction location
--- | ---
WDS display | Air bag system warning light
Flashing pattern | Priority ranking
B1231 | 13 |  | 3 | SAS unit activation (deployment) control freeze
B1342 | 12 |  | 2 | SAS unit
| Continuously illuminated | 1 | SAS unit (DTC 12 detection circuit malfunction)
B1426 | 57 |  | 21 | Seat belt warning light circuit short to power supply
B1427 | Seat belt warning light circuit open
B1869 |  | Continuously illuminated | 1 | Air bag system warning light circuit open
| Does not illuminate |  | Air bag system warning light circuit short to body ground
B1870 |  | Continuously illuminated | 1 | Air bag system warning light 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 body 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 body ground
B1884 | 18 |  | 20 | 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 |  | 20 | Passenger air bag deactivation (PAD) indicator circuit short to power supply
B1913 | 19 |  | 11 | Driver-side air bag module (inflator No.1) circuit short to body ground
21 |  | 10 | Passenger-side air bag module (inflator No.1) circuit short to body ground
B1916 | 19 |  | 11 | Driver-side air bag module (inflator No.1) circuit short to power supply
B1921 | 14 |  | 4 | Activation (deployment) inhibited due to configuration setting
B1925 | 21 |  | 10 | Passenger-side air bag module (inflator No.1) circuit short to power supply
B1932 | 19 |  | 11 | Driver-side air bag module (inflator No.1) circuit resistance high
B1933 | 21 |  | 10 | Passenger-side air bag module (inflator No.1) circuit resistance high
B1934 | 19 |  | 11 | Driver-side air bag module (inflator No.1) circuit resistance low
B1935 | 21 |  | 10 | Passenger-side air bag module (inflator No.1) 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 body 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 (inflator No.2) circuit short to body ground
B2229 | 21 |  | 10 | Passenger-side air bag module (inflator No.2) circuit short to body ground
B2230 | 19 |  | 11 | Driver-side air bag module (inflator No.2) circuit short to power supply
B2231 | 21 |  | 10 | Passenger-side air bag module (inflator No.2) circuit short to power supply
B2232 | 19 |  | 11 | Driver-side air bag module (inflator No.2) circuit resistance high
B2233 | 21 |  | 10 | Passenger-side air bag module (inflator No.2) circuit resistance high
B2234 | 19 |  | 11 | Driver-side air bag module (inflator No.2) circuit resistance low
B2235 | 21 |  | 10 | Passenger-side air bag module (inflator No.2) circuit resistance low
B2296 | 42 |  | 9 | Crash zone sensor (communication error, internal circuit abnormal)
B2434 | 51 |  | 18 | Driver-side front buckle switch circuit short to ground
B2435 | Driver-side front buckle switch circuit resistance not within specification
B2438 | 52 |  | 19 | Passenger-side front buckle switch circuit short to ground
B2439 | Passenger-side front buckle switch circuit resistance not within specification
B2444 | 43 |  | 8 | Driver-side side air bag sensor (internal circuit abnormal)
B2445 | 44 |  | 7 | Passenger-side side air bag sensor (internal circuit abnormal)
B2477 | 54 |  | 5 | Configuration error
B2691 | 51 |  | 18 | Driver-side front buckle switch circuit open or short to power supply
B2692 | 52 |  | 19 | Passenger-side front buckle switch circuit open or short to power supply
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 body 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 body ground
B2780 | Passenger-side curtain air bag module circuit short to power supply
B2867 | 31 |  | 6 | Poor connection of any SAS unit 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 unit, can be freely selected and read out in real-time.

• The WDS or equivalent 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 |
D_ABAGR2 (Driver-side air bag module (inflator No.2) resistance) | Ohms | Under any condition: 1.5-3.7 ohms | 1G, 1J
D_CRSH_S (Driver-side side air bag sensor status) | OK/ COMM_FAIL/ INT_FAIL | • Sensor normal: OK • Sensor communication error: COMM_FAIL • Sensor internal circuit abnormal: INT_FAIL | 2Z, 2AA
DABAGR (Driver-side air bag module (inflator No.1) resistance) | Ohms | Under any condition: 1.5-3.7 ohms | 1S, 1V
D_PTENSFLT (Driver-side pre-tensioner seat belt circuit status) | NORMAL/ OPEN/ SHRT_GND/ SHRT_B+/ SQ_LOWRES | • Related wiring harness normal: NORMAL • Related wiring harness circuit open: OPEN • Related wiring harness short to ground: SHRT_GND • Related wiring harness short to power supply: SHRT_B+ • Pre-tensioner seat belt circuit resistance low: SQ_LOWRES | 2P, 2S
DR_BUKL (Driver-side buckle switch status) | Buckled/ Unbuckled | • Driver-side buckle switch on: Buckled • Driver-side buckle switch off: Unbuckled | 2T
DR_CURTN (Driver-side curtain air bag module resistance) | Ohms | Under any condition: 1.4-3.2 ohms | 2V, 2Y
DR_PTENS (Driver-side pre-tensioner seat belt resistance) | Ohms | Under any condition: 1.5-3.1 ohms | 2P, 2S
DS_AB (Driver-side side air bag module resistance) | Ohms | Under any condition: 1.4-3.2 ohms | 2M, 2O
DS_AB_ST (Driver-side side air bag module circuit status) | NORMAL/ OPEN/ SHRT_GND/ SHRT_B+/ SQ_LOWRES | • Related wiring harness normal: NORMAL • Related wiring harness circuit open: OPEN • Related wiring harness short to ground: SHRT_GND • Related wiring harness short to power supply: SHRT_B+ • Air bag module circuit resistance low: SQ_LOWRES | 2M, 2O
DS_CURT_ST (Driver-side curtain air bag module circuit status) | NORMAL/ OPEN/ SHRT_GND/ SHRT_B+/ SQ_LOWRES | • Related wiring harness normal: NORMAL • Related wiring harness circuit open: OPEN • Related wiring harness short to ground: SHRT_GND • Related wiring harness short to power supply: SHRT_B+ • Air bag module circuit resistance low: SQ_LOWRES | 2V, 2Y
DS1_STAT (Driver-side air bag module (inflator No.1) circuit status) | NORMAL/ OPEN/ SHRT_GND/ SHRT_B+/ SQ_LOWRES | • Related wiring harness normal: NORMAL • Related wiring harness circuit open: OPEN • Related wiring harness short to ground: SHRT_GND • Related wiring harness short to power supply: SHRT_B+ • Air bag module circuit resistance low: SQ_LOWRES | 1S, 1V
DS2_STAT (Driver-side air bag module (inflator No.2) circuit status) | NORMAL/ OPEN/ SHRT_GND/ SHRT_B+/ SQ_LOWRES | • Related wiring harness normal: NORMAL • Related wiring harness circuit open: OPEN • Related wiring harness short to ground: SHRT_GND • Related wiring harness short to power supply: SHRT_B+ • Air bag module circuit resistance low: SQ_LOWRES | 1G, 1J
DSB_P_ST (Driver-side pre-tensioner seat belt circuit status) | NORMAL/ OPEN/ SHRT_GND/ SHRT_B+/ SQ_LOWRES | • Related wiring harness normal: NORMAL • Related wiring harness circuit open: OPEN • Related wiring harness short to ground: SHRT_GND • Related wiring harness short to power supply: SHRT_B+ • Pre-tensioner seat belt circuit resistance low: SQ_LOWRES | 2P, 2S
FNT_CRSH_S (Crash zone sensor status) | OK/ COMM_FAIL/ INT_FAIL | • Sensor normal: OK • Sensor communication error: COMM_FAIL • Sensor internal circuit abnormal: INT_FAIL | 1B, 1C
OD_D_CRSH (Driver-side side air bag sensor status) | OK/ COMM_FAIL/ INT_FAIL | • Sensor normal: OK • Sensor communication error: COMM_FAIL • Sensor internal circuit abnormal: INT_FAIL | 2Z, 2AA
OD_D_CURT (Driver-side curtain air bag module circuit status) | NORMAL/ OPEN/ SHRT_GND/ SHRT_B+/ SQ_LOWRES | • Related wiring harness normal: NORMAL • Related wiring harness circuit open: OPEN • Related wiring harness short to ground: SHRT_GND • Related wiring harness short to power supply: SHRT_B+ • Air bag module circuit resistance low: SQ_LOWRES | 2V, 2Y
OD_DAB1_ST (Driver-side air bag module (inflator No.1) circuit status) | NORMAL/ OPEN/ SHRT_GND/ SHRT_B+/ SQ_LOWRES | • Related wiring harness normal: NORMAL • Related wiring harness circuit open: OPEN • Related wiring harness short to ground: SHRT_GND • Related wiring harness short to power supply: SHRT_B+ • Air bag module circuit resistance low: SQ_LOWRES | 1S, 1V
OD_DAB2_ST (Driver-side air bag module (inflator No.2) circuit status) | NORMAL/ OPEN/ SHRT_GND/ SHRT_B+/ SQ_LOWRES | • Related wiring harness normal: NORMAL • Related wiring harness circuit open: OPEN • Related wiring harness short to ground: SHRT_GND • Related wiring harness short to power supply: SHRT_B+ • Air bag module circuit resistance low: SQ_LOWRES | 1G, 1J
OD_DSAB_ST (Driver-side side air bag module circuit status) | NORMAL/ OPEN/ SHRT_GND/ SHRT_B+/ SQ_LOWRES | • Related wiring harness normal: NORMAL • Related wiring harness circuit open: OPEN • Related wiring harness short to ground: SHRT_GND • Related wiring harness short to power supply: SHRT_B+ • Air bag module circuit resistance low: SQ_LOWRES | 2M, 2O
OD_F_CRSH (Crash zone sensor status) | OK/ COMM_FAIL/ INT_FAIL | • Sensor normal: OK • Sensor communication error: COMM_FAIL • Sensor internal circuit abnormal: INT_FAIL | 1B, 1C
OD_P_CRSH (Passenger-side side air bag sensor status) | OK/ COMM_FAIL/ INT_FAIL | • Sensor normal: OK • Sensor communication error: COMM_FAIL • Sensor internal circuit abnormal: INT_FAIL | 2B, 2C
OD_P_CURT (Passenger-side curtain air bag module circuit status) | NORMAL/ OPEN/ SHRT_GND/ SHRT_B+/ SQ_LOWRES | • Related wiring harness normal: NORMAL • Related wiring harness circuit open: OPEN • Related wiring harness short to ground: SHRT_GND • Related wiring harness short to power supply: SHRT_B+ • Air bag module circuit resistance low: SQ_LOWRES | 2A, 2D
OD_PAB1_ST (Passenger-side air bag module (inflator No.1) circuit status) | NORMAL/ OPEN/ SHRT_GND/ SHRT_B+/ SQ_LOWRES | • Related wiring harness normal: NORMAL • Related wiring harness circuit open: OPEN • Related wiring harness short to ground: SHRT_GND • Related wiring harness short to power supply: SHRT_B+ • Air bag module circuit resistance low: SQ_LOWRES | 1M, 1P
OD_PAB2_ST (Passenger-side air bag module (inflator No.2) circuit status) | NORMAL/ OPEN/ SHRT_GND/ SHRT_B+/ SQ_LOWRES | • Related wiring harness normal: NORMAL • Related wiring harness circuit open: OPEN • Related wiring harness short to ground: SHRT_GND • Related wiring harness short to power supply: SHRT_B+ • Air bag module circuit resistance low: SQ_LOWRES | 1A, 1D
OD_PSAB_ST (Passenger-side side air bag module circuit status) | NORMAL/ OPEN/ SHRT_GND/ SHRT_B+/ SQ_LOWRES | • Related wiring harness normal: NORMAL • Related wiring harness circuit open: OPEN • Related wiring harness short to ground: SHRT_GND • Related wiring harness short to power supply: SHRT_B+ • Air bag module circuit resistance low: SQ_LOWRES | 2I, 2L
P_ABAGR2 (Passenger-side air bag module (inflator No.2) resistance) | Ohms | Under any condition: 1.4-2.9 ohms | 1A, 1D
P_PTENSFLT (Passenger-side pre-tensioner seat belt circuit status) | NORMAL/ OPEN/ SHRT_GND/ SHRT_B+/ SQ_LOWRES | • Related wiring harness normal: NORMAL • Related wiring harness circuit open: OPEN • Related wiring harness short to ground: SHRT_GND • Related wiring harness short to power supply: SHRT_B+ • Pre-tensioner seat belt circuit resistance low: SQ_LOWRES | 2G, 2J
PABAGR (Passenger-side air bag module (inflator No.1) resistance) | Ohms | Under any condition: 1.4-2.9 ohms | 1M, 1P
P_CRSH_S (Passenger-side side air bag sensor status) | OK/ COMM_FAIL/ INT_FAIL | • Sensor normal: OK • Sensor communication error: COMM_FAIL • Sensor internal circuit abnormal: INT_FAIL | 2B, 2C
PS_AB (Passenger-side side air bag module resistance) | Ohms | Under any condition: 1.4-3.2 ohms | 2I, 2L
PS_AB_ST (Passenger-side side air bag sensor circuit status) | NORMAL/ OPEN/ SHRT_GND/ SHRT_B+/ SQ_LOWRES | • Related wiring harness normal: NORMAL • Related wiring harness circuit open: OPEN • Related wiring harness short to ground: SHRT_GND • Related wiring harness short to power supply: SHRT_B+ • Air bag module circuit resistance low: SQ_LOWRES | 2I, 2L
PS_CURTN (Passenger-side curtain air bag module resistance) | Ohms | Under any condition: 1.4-3.2 ohms | 2A, 2B
PS_CURT_ST (Passenger-side curtain air bag module circuit status) | NORMAL/ OPEN/ SHRT_GND/ SHRT_B+/ SQ_LOWRES | • Related wiring harness normal: NORMAL • Related wiring harness circuit open: OPEN • Related wiring harness short to ground: SHRT_GND • Related wiring harness short to power supply: SHRT_B+ • Air bag module circuit resistance low: SQ_LOWRES | 2A, 2D
PS_PTENS (Passenger-side pre-tensioner seat belt resistance) | Ohms | Under any condition: 1.5-3.1 ohms | 2G, 2J
PS1_STAT (Passenger-side air bag module (inflator No.1) circuit status) | NORMAL/ OPEN/ SHRT_GND/ SHRT_B+/ SQ_LOWRES | • Related wiring harness normal: NORMAL • Related wiring harness circuit open: OPEN • Related wiring harness short to ground: SHRT_GND • Related wiring harness short to power supply: SHRT_B+ • Air bag module circuit resistance low: SQ_LOWRES | 1M, 1P
PS2_STAT (Passenger-side air bag module (inflator No.2) circuit status) | NORMAL/ OPEN/ SHRT_GND/ SHRT_B+/ SQ_LOWRES | • Related wiring harness normal: NORMAL • Related wiring harness circuit open: OPEN • Related wiring harness short to ground: SHRT_GND • Related wiring harness short to power supply: SHRT_B+ • Air bag module circuit resistance low: SQ_LOWRES | 1A, 1D
PSB_P_ST (Passenger-side pre-tensioner seat belt circuit status) | NORMAL/ OPEN/ SHRT_GND/ SHRT_B+/ SQ_LOWRES | • Related wiring harness normal: NORMAL • Related wiring harness circuit open: OPEN • Related wiring harness short to ground: SHRT_GND • Related wiring harness short to power supply: SHRT_B+ • Pre-tensioner seat belt circuit resistance low: SQ_LOWRES | 2G, 2J
RCM_VOLT (IG1 voltage) | V | • Ignition switch is at ON: B+ • Other: 0 | 1W