Pontiac Fiero 1988 Service Manual page 1150

L U M B A R A N D B O L S T E R
S U P P O R T
mm^mmmmm^mmmmmm
S Y S T E M CHECK TABLE
SET CONTROLS NORMAL OPERATION
Driver's Lumbar
Control Switch:
BOLSTER and
INFLATE
The Bolster
Support on the
driver's seat inflates
Driver's Lumbar
Control Switch:
LUMBAR and
INFLATE
The Lumbar
Support on the
driver's seat inflates
Driver's Lumbar
Control Switch:
BOLSTER and-
DEFLATE
The Bolster
Support on the
driver's seat deflates
Driver's Lumbar
Control Switch:
LUMBAR and
DEFLATE
The Lumbar
Support on the
driver's seat deflates
Repeat the above
settings using the
Passenger's Lumbar
Control Switch and
note the operation
of the passenger's
seat
The Bolster and
Lumbar Supports in
the passenger's seat
operate the same as
those in the driver's
seat
© Refer to System
Diagnosis
when a result is
not normal.
S Y S T E M
DIAGNOSIS
• Do the tests listed for your symptom in the
Symptom Table below.
• Tests follow the Symptom Table.
SYMPTOM TABLE
SYMPTOM
DO T E S T
Both Lumbar
Controls do not
inflate and/or
deflate the Supports
A. Lumbar Pump/
Motor Relay Test
Lumbar and/or
Bolster Supports do
not operate in the
driver's seat only
B. Lumbar Control
Switch Test
C. Lumbar Valve
Assembly Test
Lumbar and/or
Bolster Supports do
not operate in the
passenger's seat
only
B. Lumbar Control
Switch Test
C. Lumbar Valve
Assembly Test
A: LUMBAR PUMP/MOTOR RELAY
TEST (TABLED
Measure: VOLTAGE
At: LUMBAR PUMP/MOTOR RELAY
CONNECTOR (Disconnected)
Condition:
® Driver's Lumbar
Control Switch:
DEFLATE
Measure
Between
Correct
Voltage
For Diganosis
C (ORN/BLK)
& Ground
Battery See 1
C (ORN/BLK)
& D (BLK)
Battery
See 2
• Driver's Lumbar Control Switch:
DEFLATE
A (GRY) &
Ground
Battery See 3
• Driver's Lumbar Control Switch:
INFLATE
F(WHT)&
Ground
Battery See 4
® If voltages are correct, go to Table 2.
1. Check ORN/BLK (60) wire for an open.
2. Check BLK (150) wire for an open.
3. Check GRY (764) wire for an open.
4. Check WHT (766) wire for an open.
(Continued on next page)