PONTIAC FIERO 1988 Service Repair Manual
Manufacturer: PONTIAC, Model Year: 1988, Model line: FIERO, Model: PONTIAC FIERO 1988Pages: 1825, PDF Size: 99.44 MB
Page 1541 of 1825

RADIO 00 D
WITH UK3 AND SUBWOOFER AMPLlFlER I
Page 1542 of 1825

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
Page 1543 of 1825

RADIO la, P
WITH UK3 AND SUBWOOFER AMPLIFIER I
Page 1544 of 1825

-, RADIO
WITHOUT SUBWOOFER AMPLlFlER AND UK3
POWER ANTENNA
Page 1545 of 1825

RADIO
WITH SUBWOOFEW AMPLIFIER AND WITHOUT UK3
Page 1546 of 1825

RADIO
WITH SUBWOOFER AMPLIFIER AND WITHOUT UK3
INTERIOR LIGHTS
- -
Page 1547 of 1825

TROUBLESHOOTING HINTS
Try the following checks before doing the Sys-
tem Check
.
1 . Check RADIO Fuse .
2 . Check CTSU Fuse or check ARC RADIO
Fuse (if equipped with Remote Control
Head)
.
3 . Check ground 6200 by operating the Cigar
Lighter
.
4 . Check that the Antenna connector and coax-
ial cable are properly connected
.
5 . Adjusting the Radio controls will change the
operation of the sound system
. Consult the
Delco Sound Service Guide for information
regarding the operating of these controls
.
6 . Before troubleshooting a suspect Speaker,
cheek
all connections to that Speaker .
7 . For proper noise diagnosis. take the car out-
side where
signals are strong . Close the
hood. and keep away from metal buildings or
sources of radio interference
.
8 . Ignition noise on FM may indicate a defec-
tive Ignition System
.
9 . Coasted screws or bolts can cause a poor
ground condition
. Scrape ground screw
clean of any paint or varnish
.
Go to System Check for a guide to normal
operation
.
r Go to System Diagnosis for diagnostic tests .
SYSTEM CHECK
* Use the System Check Table as a guide to
normal operation
.
Refer to the diagnosis given if other results
occur
.
COMPONENT LOCATION Page-Figure
......... .............. Convenience Center Behind IIP. to right of steering column 201-10-A
....... Fuse Block ...................... Behind LH side of IIP. below light switch 201-10-A
.......... Subwoofer Amplifier Assembly ..... Behind IIP. to right of center air vent
201-13-B
. C210 (11 cavities) ................ Behind IIP. on RH lower side of steering column 201- 9-A
C211(2 cavities) ................. Behind center of IIP
........................ C212 (12 cavities) ................ Behind center of IIP 201-13-B
C217 ........................... Behind center of IIP
........................ C218 ........................... Behind center of IIP 201-12-A
C219 (6 cavities)
................. Behind RH side of IIP. near Subwoofer Amplifier 201-13-B
............ 6200 .......................... Behind IIP. left of steering column 201-10-A
......... $203 ........................... IIP harness. behind instrument cluster 201-10-A
......... $205 ........................... IIP harness. behind instrument cluster 201-10-A
................ $207 ........................... I/P harness. at head of console 201-10-A
......... S225 ........................... IIP harness. behind instrument cluster 201-10-A
............ $239 ........................... Radio harness. behind center of IIP 201-13-B
............ S250 ........................... Radio harness. behind center of I/P 201-12-A
............ $251 ........................... Radio harness. behind center of IIP 201-12-A
............ S252 ........................... Radio harness. behind center of IIP 201-12-A
............ S253 ........................... Radio harness. behind center of l[/P 201-12-8
............ $254 ........................... Radio harness. behind center of IIP 201-12-A
............ S255 ........................... Radio harness. behind center of I/P 201-12-A
............ ,9256 ........................... Radio harness. behind center of IIP 201-12-A
............ S257 ........................... Radio harness. behind center of IIP 201-12-A
............ S258 ........................... Radio harness. behind center of IIP 201-12-A
$260 ........................... IIP harness. at head of console ................ 201-10-A
................ S274 ........................... IIP harness. at head of console 201-12-C
$315 ........................... Speaker harness. behind RH side of rear seat .... 201- 9-B
.... $346 ........................... Speaker harness. behind RH side of rear seat 201- 9-B
Tests follow in System Diagnosis .
Page 1548 of 1825

RADIO
SYSTEM CHECK TABLE
ACTION NORMAL RESULT FOR DlAGNOSlS OF OTHER RESULTS
Turn Ignition Switch to RUN or ACCU Time display appears Do
Test L, or if equipped with Remote Control do
Test A
Turn Radio on and tune
in a local station Power Antenna extends See
Power Antenna (Section 8A-151)
Center Balance and Fade Controls Program
is heard from all speakers without noise If
no sound comes from any Speaker, do Test G
or engine whine
If one or more Speakers do not operate, do Test D
on suspect
Speaker(s)
If excesssive noise is present, do Test H
Turn on Headlights or Park Lights and set
Radio digital display dims Do
test
N, or if equipped with Remote Control
Instrument Panel Lights to maximum
bright- Radio Panel Lamp khts Head, do test B
Lamps light (if equipped) Head,
do Test C
If all results are normal, the system is OK.
Page 1549 of 1825

SYSTEM DIAGNOSIS
Do the tests below when directed by the Sys-
tem Check.
A: RADIO POWER INPUT TEST FOR
REMOTE CONTROL HEAD (TABLE
1 )
Measure: VOLTAGE
At: RADIO RECEIVER CONNECTOR
C1
(Disconnected)
Measure
Between
1 ~~~~~~ I For Diagnosis I
10 (ORNI
BLK) &
Ground
(Without
Subwoofer Battery I See 1 Amplifier)
Ground (With
Subwoofer Amplifier)
If the voltage is correct, go to Table
2.
1. Check ORNIBLK (340) or ORN 1340)wire
for an open.
A: RADlO POWER INPUT TEST FOR
REMOTE CONTROL HEAD (TABLE
2)
At: RADlO RECEIVER CONNECTORS 61 i%
C3 (Disconnected)
(Continued in next column) Continued from previous
column)
C119 (YEL) &
C311 (BLKILT Battery See 2
BLU)
ell9 (YEL) &
Cl/5 (BLKILT
BLU)
(Without
Subwoofer Amplifier) Battery See
2
el19 (YEL) &
C115 (BLK)
(With
Subwoofer Amplifier)
If all voltages are correct, send Radio to
an authorized
AC-Delco repair station.
1. Check YEL (43) wire.
2. Check BLKILT BLU (151) or BLK (150)
wire for
an open to ground (see sche-
matic).
B: DISPLAY DIMMING TEST FOR
REMOTE CONTROL HEAD
At: RADIO RECElVER CONNECTOR C1
(Disconnected)
C: PANEL LAMPS TEST FOR REMOTE
CONTROL HEAD
(Disconnected)
D: SPEAKER TEST
1. Disconnect suspect speaker connector and
connect
a known good 1.5 volt battery
across speaker t
Caution: Do not leave 1.5 volt battery con-
nected for more than one second. Pro-
longed connection could damage
speaker.
If speaker pops, go to Speaker Test Table.
If speaker does not pop, replace defective
speaker.
Page 1550 of 1825

D: SPEAKER TEST (Continued from previous column)
At: RADIO OUTPUT FOR SUSPECT SPEAKER
Ignition Switch: RUN
o an authorized AC-Delco
E: REMOTE CONTROL SYSTEM TEST
(TABLE
1)
Measure: VOLTAGE
At: CONNECTOR C210 (Connected)
Conditions: Ignition Switch: RUN
. Headlights: ON
I r Instrument Panel at maximum I brightness
I Measure I I For Diagnosis ( Between
I & I Battery I See 1 1 Ground I I I I
(Continued in next column)
D (YEL) & B
(BLKILT Battery See 2
BLU)
(GRY) & Battery
Ground See 3
If all voltages correct, go to Table
2.
1. Check YEL (43) wire.
2. Check BLKILT BLU (151) wire for an
open to ground (see schematic).
3. Check GRY
(8) wire.
E: REMOTE CONTROL SYSTEM TEST
(TABLE 2)
At: CONNECTOR 6210 (Connected)
Condition:
Measure
Between
I tz I For Diagnosis
1 I - I
A (ORN) & Between 4.5
Ground and 5.5 volts See 1
Press
the Preset, Mute, and RCL buttons
on the Remote Control
Head simul-
taneously
r Turn the steering wheel slowly while mea-
Between 2.0
at
all positions
If
all voltages are correct, check ORN
(917) wire to the Radio. Send Radio to an
authorized AC-Delco repair station if wir-
ing and connections are OK. Refer to Sec-
tion
9A for removal and replacement
~rocedures. ---- - -
(Continued in next column) (Continued from
previous
column)
Refer to Section 3B5 for replacement pro-
cedures.
2. DoTest F.
F: OPTlCAL SLlPRlNG TEST (TABLE 1 )
e Remove the Remote Control Head. Refer to
Section 3B5 for removal procedures.
r Install tool 5-353630 between the Control
Head and connector
C1 (see section 3B5).
Make the following measurements.
At: TOOL 5-35630 (Connected)
Engine running
0 Light Switch: MEAD or PARK
0 lnstrument Panel Lights at maximum
@ If all voltages are correct, go to Table 2.
(Continued on next page)