For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Radio/Audio System Schematics
1 | Did you review the Radio/Audio System Description and Operation and perform the necessary inspections? | Go to Step 2 | Go to Radio/Audio System Description and Operation
2 |

1. Turn ON the ignition, with the engine OFF.
2. Turn ON the radio.
3. Adjust the radio balance and fade to the suspect speaker.

Do all of the speakers operate properly?

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

Go to Step 3

3 | Are all of the speakers inoperative? | Go to Step 6 | Go to Step 4
4 |

1. Turn OFF the ignition.
2. Disconnect the radio.
3. Momentarily touch a 1.5 volt battery between the appropriate speaker output circuits of the radio.

Does the speaker emit an audible pop?

Go to Step 8

Go to Step 5

5 | Test the appropriate speaker output circuits of the radio for a short, high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 11 | Go to Step 7
6 |

1. Turn OFF the ignition.
2. Disconnect the radio.
3. Test the speaker output circuits of the radio for a short. 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 speaker. 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 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 10
9 | Replace the speaker. Refer to Speaker Replacement Reference . Did you complete the replacement? | Go to Step 11 | --
10 | Replace the radio. Refer to Radio Replacement . Did you complete the repair? | Go to Step 11 | --
11 | Operate the system in order to verify the repair. Did you find and correct the condition? | System OK | Go to Step 2