Pontiac Fiero 1988 Service Manual page 1129

INTERIOR L I G H T S DIMMING
mm
T R O U B L E S H O O T I N G H I N T S
• Try the following checks before doing the
System
Diagnosis.
1. Check the TAIL Fuse and OEM (240) wire by
observing the Park Lights. Refer to Section
8A-110 if the Park Lights do not operate.
2. Check the INST LPS Fuse.
3. If only one light does not operate, check the
bulb and wiring to the suspect light (see sche-
matic).
4. If the Instrument Panel Lights do not oper-
ate, check GRY (8) and BLK (150) wires.
Check the Printed Circuit and the bulbs if
the GRY (8) and BLK (150) wires are OK.
• Go to System Diagnosis for diagnostic tests.
• Do the test below if none of the Panel Lights
operate, but the Park Lights operate.
C O M P O N E N T L O C A T I O N
Defogger Timer Relay On brake pedal support
Fuse Block ' Behind LH side of I/P
Remote Dimmer Below center of I/P, near steering column support
C211 (8 cavities) Behind center of I/P, near radio
C247 (12 cavities) Center console, behind radio
G201 Behind center of I/P
G202 Between seats, near rear bulkhead
G203 On RH steering column s u p p o r t . . . . . . . . . . . .
S209 . Main harness, right of steering column. . . . . . .
S211... Main harness, behind RH side of I / P . . . . . . . . .
S 2 1 2 . . . . . . . . . . . . . . o Main harness, behind center of d a s h . . . . . . . . .
S213 Main harness, behind rear bulkhead grommet.
Page-Figure
201- 6-E
201- 6-D
201- 8-D
201-10-A
201- 6-C
201- 6-A
201- 6-F
201- 6-C
201- 6-C
201- 6-C
201-15-A
A : INTERIOR L I G H T S D I M M I N G T E S T
(TABLE 1)
A : INTERIOR L I G H T S D I M M I N G T E S T
(TABLE 2}
Connect: A T E S T LAMP
AT: FUSE BLOCK HOT SIDE OF INST LPS
FUSE CAVITY
Conditions:
• INST LPS Fuse: REMOVED
• Light Switch: PARK
• Dimming Control: BRIGHT
Connect
Between
Correct
Result
For
Diagnosis
INST LPS
Fuse
Cavity
& Ground
Test Lamp
lights
brightly
See 1
• Slowly adjust dimming control to DIM
INST LPS
Fuse
Cavity
& Ground
Test Lamp
dims
See 1
• If all the results are correct, check GRY
(8) wire for an open.
1. Go to Table 2.
Connect: A T E S T LAMP
At: PANEL-INTERIOR LIGHTS CONTROL
CONNECTOR (Connected)
Conditions:
• Light Switch: PARK
o
Dimming
Control:
BRIGHT
Connect
Between
Correct
Result
For
Diagnos
D (BRN)
& Ground
Test Lamp
lights
See 1
A (DK GRN/
W H T ) & Ground
Test Lamp
lights
See 2
• Slowly adjust dimming control to DIM
A (DK GRN/
WHT)
& Ground
Test
Lamp dims
See 2
• If all the results are correct, go
Table 3.
1.
Check
BRN (9) wire
for
an open (see sche-
matic).
2. Replace Panel-Interior Lights Contr