Pontiac Fiero 1988 Service Manual page 1152

LUMBAR AND B O L S T E R SUPPORT
CIRCUIT OPERATION
Voltage is applied at all times through the
PWR ACC Circuit Breaker. When the Lumbar
Control Switch is moved to LUMBAR and
INFLATE, the Lumbar Pump/Motor starts to
operate to pump up the Lumbar Support. When
the Lumbar Control Switch is moved to
DEFLATE, the Lumbar Control Pump/Motor
reverses to pull the air from the Lumbar Sup-
port.
A similar action occurs when the Lumbar
Control Switch is operated for the Bolster Sup-
port.