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

Body and Accessories
Entertainment 8-229
Speakers Inoperative - One or More (General)
Step Action Value(s) Yes
No
)
Was the entire Radio/Audio System Check performed? Goto
1
-
Radio/Audio
Go to Step 2 System Check
1. Disconnect the amplifier connector.
2. Turn the ignition switch to the ACCY position.
3. Turn the radio on.
4. Insert a cassette or compact disc from J 39916-A.
Refer to J 39916.
5. Set the radio balance and fade controls to the detent
2
6.
(center) position.
Set the radio volume at the normal listening level.
-
7. Measure and record the AC voltage between the
amplifier connector terminals E2 and E3 with a DMM
while playing the combination test tone from the
cassette or the compact disc.
8. Measure and record the AC voltage between the
amplifier connector terminals E1 and F1.
Are the recorded voltages approximately the same? Go to Step 3 Go to Step 4
1. Inspect for a poor connection at the amplifier
connector terminals E2 and E3 (left) or
E1 and F1 (right).
3
2. Replace the amplifier if the connection is OK.
- -
3. Inspect the system. Refer to Amplifier Replacement
(Coupe) or Amplifier Replacement (Convertible).
Is the repair complete?
Go to Step 7
1. Backprobe the radio connector C1 between
terminals 1 and 2 and record AC voltage with
aDMM.
4
-
2. Backprobe the radio connector C1 between
terminals 3 and 4 and record the AC voltage.
Are the recorded voltages approximately the same? Go to Step 5
Go to Step 6
1. If the left speaker is inoperative, repair the open in
the circuit 118 or circuit 201 between the radio and
the amplifier.
5
2. If the right speaker is inoperative, repair the open in
- -
the circuit 117 or circuit 200 between radio and
amplifier.
Is the repair complete?
Go to Step 7
1. If the left speaker is inoperative, inspect for the
following conditions:
• A short to B+ or ground in circuits 118 and 201
between the radio and the amplifier
• A poor connection at the radio connector C1
terminal 1. and terminal 2
2. If the right speaker is inoperative, inspect for the
6
following conditions:
- -
• A short to B+ or ground in circuits 117 and 200
between the radio and the amplifier
• A short to B+ or ground at the radio connector C1
terminal 3 and terminal 4
3. Replace the radio if the inspections are OK. 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