Make sure a connector is connected
securely. Loose connection results in
malfunction. -
When disconnecting a connector equipped with
a lock, press it down to the direction in the below
figure. -
When checking voltage or continuity of the
connector terminal with a circuit tester, connect
the tester probe to the terminal at the harness
side. For a sealed type connector, connect the
probe to the terminal through the hole in the
rubber cap of the wiring. Take care not to
damage the insulation of the wires. Insert the
probe until it contacts the terminal completely. -
When inspecting the airbag system, make sure to use a diagnostic device, not a circuit tester.
Impact sensor monitoring
The air bag unit supplies a certain level of test current to monitor the front and side impact sensors. If the
wiring is open/short circuited or no signal is input, or communication is malfunctioning, it sets a DTC and
turns on the air bag warning lamp.
FaultsDetection
Time for clearing
Fault condition Time for detecting
Normal errorsIncorrect ID after IGN ON
Approx. 1 seconds.Approx. 2 seconds.
(next Ign) Faulty sensor after IGN ON
Communication error
Incorrect ID Inconsistent ID after IGN ON
Communication
errorCommunication data error
Approx. 2 seconds.
Open/Short circuit (B+)
Short Circuit to
GroundShort Circuit to Groundapprox. 2 to 4
seconds
6) DTC and Air Bag Deployment Data Storing
DTC storing
Airbag deployment data storing
The air bag deployment data due to a collision cannot be cleared. The air bag unit should be
replaced. -
- All DTCs of air bag system are stored in the air bag unit. Maximum number of DTCs that can be stored
is 16. If a new DTC is set after 16 DTCs are stored, the oldest stored code is erased first.
The air bag deployment data is stored in the air bat unit. Maximum number of data that can be stored is
7.
