Speakers Inoperative - One Or More (Both Rear) - GMC Chevrolet Camaro 1998 Service Manual

Body and Accessories
Entertainment 8-231
Speakers Inoperative - One or More (Both Rear)
Step Action
Value(s) Yes No
Was the entire Radio/Audio system System Check Go to
1 performed? -
Radio/Audio
Go to Step 2 System Check
1. Disconnect the amplifier connector.
2. Turn the ignition switch
!O
ACCY.
3. Turn the radio on.
4. Insert a cassette or compact disc from J 39916.
5. Set the radio balance and fade controls to the detent
(center) position.
6. Set the radio volume at the normal listening level.
2
7. Play the combination test tone from the cassette
OV
AC
or CD.
8. Use a DMM in order to measure the AC voltage
between the amplifier connector terminals E6 and E7.
9. Measure the AC voltage between the amplifier
connector terminals E4 and E5.
Record the voltage
Are the voltage readings approximately the same? Go to Step 3 Go to Step 4
1. Inspect for
a
poor connection at the amplifier
connector terminals E6 and E7 (left) or
terminals E4 and E5 (right).
3
2. Replace the amplifier if the connection is OK. Refer
-
-
to Amplifier Replacement(Coupe) Amplifier
Replacement (Convertible)
Is the repair complete?
Go to Step 7
1. Use a DMM in order to backprobe the radio
connector C3 between terminal f9 and terminal· 20
4
2. Probe the. radio connector C3 between the
-'--
terminal 17 and terminal. 18.
3. Rec;ord the voltage reading.
Is the resistance approximately the same?
Go to Step 5 Go to Step 6
1. For left inoperative speakers, repair the open in
circuit 116 or circuit 119 between the radiq and
amplifier.
5
2. For right inoperative speakers, repair the open in
- -
circuit 115 or circuit 46 between the radio and
amplifier.
Is the repair complete?
Go to Step 7
1. If the left speaker is inoperative, inspect the for the
following conditions:
• A short to B+ or ground in circuits 116 or 119
• A poor connection at the radio connector C3
terminal 19 and terminal 20
2. If the right speaker is inoperative, inspect for the
6
following conditions:
-
-
• A short to B+ or ground in circuits
115
and
46.
• A poor connection at the radio connector C3
terminal 17 and terminal 18.
3. Replace the radio if none of these conditions exist.
Refer to Radio Replacement (Chevrolet) or Radio
Replacement (Pontiac).
\.
Is the repair complete? Go to Step 7
1. Turn the ignition switch to the OFF position.
Go to
7
2. Reconnect all connectors/components removed.
-
Radio/Audio
-
Have all the repairs been made?
System Check