B1620

DTC B1620 Internal Fault

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 integrity : detection of faulty closure.
4. Plausibility of accelerometer signal.
5. Operation of SRSCM components.

INSPECTION PROCEDURE

REPLACE THE SRSCM

The timely completion of all tests is monitored by 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 SRI (Service Reminder Indicator). The SRSCM must be replaced once the fault codes mentioned above (Except for B1657) are confirmed.

NOTE: For B1657 five times reusability is possible.