B1651

DTC B1651 CRASH RECORDED DRIVER SIDE AIRBAG

DESCRIPTION

SRSCM MALFUNCTION

The SRSCM shall also cyclically monitor the following :

1. Functional readiness of the firing circuit activation transistors.
2. Adequacy of deployment energy reserves.
3. Safing sensor integtity : detection of faulty closure.
4. Plausibility of accelerometer signal.
5. Operation of SRSCM components.

The timely completion of all tests is monitored by a separate hardware watchdog. During normal operation, the watchdog is triggered periodically by the SRSCM : If the SRSCM fails to trigger the watchdog, the watchdog will reset the SRSCM and activate the SRS SRI.

The SRSCM must be replaced once the fault codes(except B1657) mentioned above are confirmed. Be able to reuse SRSCM 5 times, when B1657 is only monitored.