9-5 SE Sedan (9600) V6-3.0L Turbo (B308) (1999)
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When the switch (252R) for the heated rear seat is pressed, B+ is supplied to pin 9 in TWICE. TWICE grounds the relay for the heated rear seat via pin
52.
The relay trips and supplies B+ via fuse 10 to the heating pad in the rear seat and to the switch indicator.
The length of time the heating is active depends on the exterior temperature. TWICE receives information on the exterior temperature from SID via the
bus.
The heating will be on for 5 minutes when the exterior temperature exceeds -5 degrees C. This period will be longer if the exterior temperature is below
-5 degrees C and reaches its maximum at -14 degrees C. The period can be programmed between 3-18 minutes but is normally set to 10 minutes.
