247
(2) Internal troubles
The micro controller can check the following items not
only in the initiation check but also in the circular diagnos-
tic check.
1 Trigger transistor of ignition circuit: high-end transistor
can be checked not only in the initiation check but
also in the circular diagnostic check. However, since
the low-end transistor is open when connected in short
circuit to power source, it can only be checked in the
initiation check to avoid explosion.
2 The ignition voltage is provided by supercharge
converter.
3 The acceleration sensor performs selfcheck in the
initiation check.
4 Range of allowed deviation of acceleration sensor in the circular diagnostic check.
5 Microcontroller includes AD converter, ROM, RAM, etc.
6 Status of safety sensor.
NOTICE
The connectors of the squib circuit contain a
shorting bar. When the connector is not
connected, the unexpected deployment is
caused by the short in the circuit arising from
the contact of the positive (+) and negative (-)
terminals or the static electricity. If there is
poor connection for connectors, the symptom
may not be removed even when the shorting
bar is connected.
14
Ignition circuit 4 (passenger seat belt pretensioner), low resistance
or short circuit
B1 368
15 Ignition circuit 4 (passenger seat belt pretensioner), groun
B1 676
28 Crash output pin, short circuited to power source B1 677
29
PADI (passenger airbag deactivation switch indicator light) error,
connected to power source or light bulb short circui
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