ON-BOARD DIAGNOSTIC SYSTEM FUNCTION

id080200300300

Self-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 CAN.

DTC				System malfunction location
M-MDS display	Air bag system warning light
	Flashing pattern		Priority ranking
B1231	13		3	SAS control module activation (deployment) control freeze
B1342	12		2	SAS control module (internal circuit abnormal)
	―	Continuously illuminated	1	SAS control module (DTC 12 detection circuit malfunction)
	14		4	Deployment prohibited because configuration is not set
B1426	57		23	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		21	Passenger air bag deactivation (PAD) indicator 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		21	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 (inflator No.1) 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 (inflator No.1) circuit short to power supply
B1932	19		11	Driver-side air bag module circuit resistance high
B1933	21		10	Passenger-side air bag module (inflator No.1) circuit resistance high
B1934	19		11	Driver-side air bag modulecircuit 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
B2229	21		10	Passenger-side air bag module (inflator No.2) circuit short to body ground
B2231	21		10	Passenger-side air bag module (inflator No.2) circuit short to power supply
B2233	21		10	Passenger-side air bag module (inflator No.2) circuit resistance high
B2235	21		18	Passenger-side air bag module (inflator No.2) circuit resistance low
B2296	42		9	Crash zone sensor (communication error, internal circuit abnormal)
B2434	51		19	Driver-side front buckle switch circuit short to ground
B2435				Driver-side front buckle switch circuit resistance not within specification
B2438	52		20	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		19	Driver-side front buckle switch circuit open or short to power supply
B2692	52		20	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 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

PID/data monitor table