For 1990-2009 cars

## Speakers Inoperative - One or More Base Audio System

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
DEFINITION: This table is used for diagnosing one or more speakers that are inoperative on a base audio system.
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 OFF the ignition.
2. Remove the radio and disconnect the connector.
3. At the radio connector, momentarily touch a 1.5 volt battery between the appropriate speaker circuits.

Does the speaker emit an audible pop?

--

Go to Step 3

Go to Step 4

3 | Inspect for poor connections at the radio harness connector. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 7 | Go to Step 6
4 | Test the inoperative speaker circuit for the following:

• | Poor connection at speaker terminal

• | Open circuit

• | Speaker wires shorted together

• | Short to ground

• | Short to voltage

• | Short to shield

• | Speaker shield wire short to voltage

Did you find and correct the condition?

--

Go to Step 7

Go to Step 5

5 | Replace the inoperative speaker. Is the replacement complete? | -- | Go to Step 7 | --
6 |

1. Replace the radio and perform the set up procedure for the radio.
2. Install a scan tool.
3. Select RADIO THEFT from the SPECIAL FUNCTIONS menu.
4. Follow the instructions on the screen.

Did you complete the replacement?

--

Go to Step 7

--

7 | Verify that all speakers operate properly. Do all speakers operate properly? | -- | System OK | Go to Step 2

## Speakers Inoperative - One or More BOSE Audio System

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
DEFINITION: This table is used to diagnose no sound from one or more speakers on a BOSE® audio system.
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. Measure the voltage at the inoperative speaker terminal 1 and then at terminal 2.

Does the voltage measure within the specified value?

5.5-6.5 V

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

Go to Step 3

3 |

1. Turn OFF the radio.
2. Turn OFF the ignition.
3. Lower the amplifier bracket to gain access to the amplifier connector.
4. Turn ON the ignition, with the engine OFF.
5. Turn ON the radio.
6. At the amplifier connector, measure the voltage at the inoperative speaker (+) input terminal.
7. Measure the voltage at the inoperative speaker (-) input terminal.

Does the voltage measure within the specified value?

4.5-5.5 V

Go to Step 4

Go to Step 5

4 |

1. At the amplifier connector, measure the voltage at the inoperative speaker (+) output terminal.
2. Measure the voltage at the inoperative speaker (-) output terminal.

Does the voltage measure within the specified value?

5.5-6.5 V

Go to Step 6

Go to Step 7

5 | Test the speaker circuit(s) between the radio interface module (RIM) and amplifier for the following:

• | Open

• | Short to ground

• | Short to voltage

• | Short to shield

• | Speaker wires shorted together

Did you find and correct the condition?

--

Go to Step 8

Go to Step 9

6 | Test the inoperative speaker circuit for an open. Refer to Testing for Continuity in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 8 | Go to Step 10
7 | Test the speaker circuits, to the inoperative speaker, for a short to ground. Refer to Testing for Short to Ground in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 8 | Go to Step 11
8 | Verify that all speakers operate properly. Do all speakers operate properly? | -- | System OK | Go to Step 2
9 | Inspect for poor connections at RIM connector C2. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 8 | Go to Step 12
10 |

1. Inspect for poor connections at speaker. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.
2. Repair as necessary.
3. If no poor connection was found, replace the speaker.

Did you complete the repair or the replacement?

--

Go to Step 8

--

11 | Inspect for poor connections at amplifier connector. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 8 | Go to Step 13
12 | Replace the RIM. Did you complete the replacement? | -- | Go to Step 8 | --
13 | Replace the amplifier. Did you complete the replacement? | -- | Go to Step 8 | --

## Speakers Inoperative - One or More Front or Rear w/BOSE Audio System

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
DEFINITION: This table is used to diagnose no sound from both front door speakers (LH and RH side) or both rear door speakers (LH and RH side) on a BOSE® audio system.
1 | Did you perform the Radio/Audio System Diagnostic System Check? | -- | Go to Step 2 | Go to Diagnostic System Check - Radio/Audio System
2 | Is the complaint that both front door speakers (LH and RH side) inoperative? | -- | Go to Step 3 | Go to Step 4
3 |

1. Lower the amplifier bracket to gain access to the amplifier connector.
2. Disconnect the amplifier connector.
3. At the amplifier connector, test for a short to voltage at terminals 16, 17, 18 and 19. (Turn ON the ignition, leaving the engine OFF, when testing for a short to voltage condition.)

Did you find and correct a short to voltage condition?

--

Go to Step 5

Go to Step 6

4 | Is the complaint that both rear door speakers (LH and RH side) inoperative? | -- | Go to Step 7 | --
5 |

1. Reconnect the amplifier connector.
2. Reconnect any other disconnected connectors.
3. Turn ON the radio.
4. Verify that all speakers operate properly.

Do all speakers operate properly?

--

System OK

--

6 | Replace the amplifier. Did you complete the replacement? | -- | Go to Step 8 |
7 |

1. Lower the amplifier bracket to gain access to the amplifier connector.
2. Disconnect the amplifier connector.
3. At the amplifier connector, test for a short to voltage at terminals 20, 21, 22 and 23. (Turn ON the ignition, leaving the engine OFF, when testing for a short to voltage condition.)

Did you find and correct a short to voltage condition?

--

Go to Step 5

Go to Step 6

8 | Verify that all speakers operate properly. Do all speakers operate properly? | -- | System OK | --