1988 PONTIAC FIERO Service Repair Manual

LUMBAR AND BOLSTER SUPPORT
(Continued from previous page)
B: LUMBAR CONTROL SWITCH TEST
Measure: VOLTAGE
At: DRIVER'S OR PASSENGER'S LUMBAR
CONTROL
SWITCH (Connected)
Condition:
Lumbar Control
Svvitch: LUMBAR &
INFLATE
I (ORNIBLK) I ~attery ( See 1 ( & Ground
Measure
Belween
1 & 1 Battery I See 2 I
Correct
Voltage
(BRN) &
Ground
I
Lumbar Control Switch: BOLSTER &
DEFLATE
For
Diagnosis
I A(PPL) & I Battery I See 2 I Ground Battery
Ground
I I Battery I See 2 1
See 2
If voltages are correct, do Test C.
1. Check In-Line Fuse and ORNIBLK (60)
wire for an open.
2. Check In-Line Fuse. If blown, check
attached wire for a short to ground. Oth-
erwise, replace Lumbar Control Switch.
6: LUMBAR VALVE ASSEMBLY TEST CIRCUIT OPERATION
Voltage is applied at all times though the
PWR ACC Circuit Breaker. When the Lmbar
Control Switch is moved to LUMBAR and
INFLATE, the Lumbar PunapIMotor starts to
operate to pump up the Lumbar Support. When
the Lumbar Control Switch is moved to
DEFLATE, the
Lumbar Pump Motor reverses
to pull the
air from the Lumbar Support.
Bolster Support operates
in the same manner.
SSENGER'S LUMBAR
VALVE ASSEMBLY CONNECTOR
(Disconnected)
If voltages are correct, replace the suspect
Lumbar Valve Assembly.
1. Check BRN (763) wire for an open.

RADIO 00 D
WITH UK3 AND SUBWOOFER AMPLlFlER I

p------------o--------o------------------------------------------------------------------------------- 1 '3 5 4 1 SUEWOOFER
( POWER I IA- v I- 6200 1 IN l ASSEMBLY - - I LH FROPJT AUDIO INPUT LH REAR AUDIO INPUT RH FRONT AUDIO INPUT RH REAR AUDIO INPUT B- I I ,,--,,,-,-,,-,-,-,----~--------------------------~---------------------------------------------------J

RADIO la, P
WITH UK3 AND SUBWOOFER AMPLIFIER I

-, RADIO
WITHOUT SUBWOOFER AMPLlFlER AND UK3
POWER ANTENNA