900 SE Hatchback L4-1985cc 2.0L DOHC Turbo EFI (1997)
Self-diagnostics
When the ignition is switched on and the system is charged, the control module begins an initial self-test for up to 10 seconds. The airbags cannot be
detonated during this time. During the self-test, the electric detonators, the cable assembly, the SRS lamp and the processor are checked.
The SRS lamp is lit for 3 to 4 seconds during the initial test when the voltage is switched on in order to check the lamp. The self-test is then
continuous as long as the voltage is switched on. The system is then functioning normally and can sense a collision.
In case of fault, the SRS lamp stays lit.
NOTE: When switching on the ignition: The SRS is not functional for the first 6 seconds.
When a fault is registered for the first time, a diagnostic trouble code is generated. A "P" in front of the diagnostic trouble code means that the fault is
permanent and an "I" that the fault is intermittent. At the same time that the diagnostic trouble code is registered, a fault counter and a fault time
counter start. The fault counter counts how many times a particular fault is registered, up to 255 times.
The fault time counter shows how long a permanent fault has been registered (up to 40 hours), or alternatively how much time has elapsed since an
intermittent fault was first registered. The fault time counter counts in intervals of five minutes of charged time. The first interval is however two and
one half minutes long so that even faults registered after a short time driving can be included.
