GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2001 🢒 Sunfire 🢒 Body and Accessories 🢒 Entertainment 🢒 Speakers Inoperative - All

Speakers Inoperative - All Pontiac

Step

Action

Yes

No

Schematic Reference: Radio/Audio System Schematics

1

Did you perform the Radio/Audio System Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Radio/Audio System

2
  1. Turn ON the ignition, with the engine OFF.
  2. Turn ON the radio.
  3. Adjust the radio balance and fade controls to the center positions.

Can audio be heard from all speakers?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3
  1. Turn OFF the ignition.
  2. Remove and disconnect the radio connector.
  3. Test all speaker output circuits of the radio for a short to ground or a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 11

Go to Step 4

4

Is the vehicle equipped with an audio amplifier?

Go to Step 5

Go to Step 7

5
  1. Turn OFF the ignition.
  2. Disconnect the audio amplifier connector.
  3. Using two fused jumpers, connect a pair of speaker inputs to a pair of speaker outputs of the audio amplifier in order to bypass the audio amplifier.
  4. Turn ON the ignition, with the engine OFF.
  5. Turn ON the radio.
  6. Adjust the radio balance and fade to the connected speaker.

Does the speaker operate properly?

Go to Step 6

Go to Step 7

6
  1. Disconnect the audio amplifier connector.
  2. Test the battery positive voltage circuits of the audio amplifier for an open or short to ground.
  3. Test the ground circuits between the radio and audio amplifier for an open.
  4. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 11

Go to Step 8

7

Inspect for poor connections at the harness connector of the radio. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 11

Go to Step 9

8

Inspect for poor connections at the harness connector of the audio amplifier. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 11

Go to Step 10

9

Important:: Perform the setup procedure for the radio.

Replace the radio. Refer to Radio Replacement and Radio Setup for service procedure.

Did you complete the replacement?

Go to Step 11

--

10

Replace the audio amplifier. Refer to Radio Speaker Amplifier Replacement for service procedure.

Did you complete the replacement?

Go to Step 11

--

11

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

--

Speakers Inoperative - All Chevrolet

Step

Action

Yes

No

Schematic Reference: Radio/Audio System Schematics

1

Did you perform the Radio/Audio System Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Radio/Audio System

2
  1. Turn ON the ignition, with the engine OFF.
  2. Turn ON the radio.
  3. Adjust the radio balance and fade controls to the center positions.

Can audio be heard from all speakers?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3
  1. Turn OFF the ignition.
  2. Remove and disconnect the radio.
  3. Test all speaker output circuits of the radio for a short to ground or a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 10

Go to Step 4

4

Is the vehicle equipped with an audio amplifier?

Go to Step 5

Go to Step 6

5
  1. Disconnect the audio amplifier connector.
  2. Test the speaker output circuits of the audio amplifier for a short to ground or a short to voltage.
  3. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 10

Go to Step 7

6

Inspect for poor connections at the harness connector of the radio. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 10

Go to Step 8

7

Inspect for poor connections at the harness connector of the audio amplifier. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 10

Go to Step 9

8

Important:: Perform the setup procedure for the radio.

Replace the radio. Refer to Radio Replacement and Radio Setup for service procedure.

Did you complete the replacement?

Go to Step 10

--

9

Replace the audio amplifier. Refer to Radio Speaker Amplifier Replacement for service procedure.

Did you complete the replacement?

Go to Step 10

--

10

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

--