Pontiac Fiero 1988 Service Manual page 1156

T R O U B L E S H O O T I N G HINTS C O M P O N E N T L O C A T I O N
Page-Figure
At dome lamp, in roof
Behind LH side of I/P 201- 6-D
Under RH side of center console 201-10-A
Center of dash, behind radio
Center console, behind radio 201-10-A
Behind LH side of I/P 201- 6-B
Behind center of I/P 201- 6-C
Main harness, above steering column 201- 7-A
Main harness, behind RH side of I/P 201- 6-C
Main harness, behind RH side of I/P .. 201- 6-C
Main harness, behind center of dash 201- 6-C
• Try the following checks before doing the
System Check.
1. Check the RADIO Fuse.
2. Check the BAT Fuse by operating the cigar
lighter.
3. Check that the Antenna connector and coax-
ial cable are properly connected.
4. Adjusting Radio controls will change the
operation of the sound system. Consult the
Delco Sound Service Guide for information
regarding the operation of these controls.
5. Before troubleshooting a suspect speaker,
check all connections to that speaker.
6. For proper noise diagnosis, take car outside
where signals are strong. Close hood and
keep away from metal buildings or sources
of radio interference.
7. Ignition noise on FM may indicate a defective
Ignition System.
8. Coated screws or bolts can cause a poor
ground condition. Scrape ground screws
clean of any paint or varnish.
• Go to System Check for a guide to normal
operation.
• Go to System Diagnosis for diagnostic tests.
S Y S T E M C H E C K
• Use the System Check Table as a guide to
normal operation.
• Refer to System Diagnosis for a list of symp-
toms and diagnostics steps.
Dome Light Module .,
Fuse Block .
Sub-Woofer Amplifier,
C208 (2 cavities)
C247 (12 cavities)
C248 (2 cavities)
G201
S201
5210
5211
5212. ..
S Y S T E M C H E C K T A B L E
ACTION NORMAL RESULT
With Ignition Switch
in RUN, turn the
Radio ON
The display comes on
The Digital Clock
operates
(Electronically Tuned
Radio only)
Sound comes from all
four speakers
Operate Radio
controls
Consult the Delco
Sound Service Guide
for information
regarding the
operation of the
controls
Turn Headlight
Switch to PARK
The Panel Light
comes on
The Digital display
dims
• Refer to System Diagnosis when a result is not
normal.
S Y S T E M D I A G N O S I S
• Do the tests listed for your symptom in the
Symptom Table below. If the vehicle's symp-
tom is not in the table, perform all tests.
• Tests follow the Symptom Table.
• Tests apply to both Electronically Tuned Radio
(ETR) and
Delco Bose® Music System unless
otherwise indicated.
SYMPTOM TABLE
SYMPTOM
DO TEST
Radio does not
appear to work (no
display lights, no
sound)
A: Radio Power
Input Test
Panel Light does not
come on
B: Panel Light Test
Display Dimming
function will not
operate
C: Display Dimming
Test
(Continued on next page)