Kia 2004.5 Spectra Service Technical Training page 272

SRSCM CONTROL
PROCESSING UNIT (CPU)
POWER SUPPLY
CAPACITOR
14
The SRSCM central processing unit (CPU) controls
warning lamp functions (SRI), diagnostics, crash
discrimination, deployment functions, power backup,
and crash data, which is recorded within the SRSCM.
If there is a failure in the SRSCM, the SRI lamp will
either not blink or remain ON after the self-check.
This information is recorded in Random Access
Memory (RAM) in the form of a Body Diagnostic
Trouble Code (DTC Bxxxx).
The Power Supply is delivered by the 12V automotive
electrical system, with ignition ON through the 15A
SRS fuse located in the dash fuse box. The SRSCM
runs off 5 volts converted by the internal power
supply. Grounding is through the aluminum housing of
the SRSCM.
The Capacitor stores the back up power of the power
supply system. If SRSCM power is interrupted, the
capacitor has emergency energy reserves to provide
deployment voltage.
C C a a u u t t i i o o n n : : W W h h e e n n s s e e r r v v i i c c i i n n g g t t h h e e S S R R S S , , r r e e m m o o v v e e t t h h e e
!
1 1 5 5 A A S S R R S S f f u u s s e e a a n n d d w w a a i i t t a a m m i i n n i i m m u u m m o o f f 3 3 m m i i n n u u t t e e s s
f f o o r r t t h h e e c c a a p p a a c c i i t t o o r r s s t t o o d d i i s s c c h h a a r r g g e e . .
2004.5 Spectra Technology
Supplemental Restraint System