For 1990-2009 cars

## Speakers Inoperative - One or More Base Audio System

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
Schematic Reference: Radio/Audio System Schematics DEFINITION: This table is used to diagnose one or more speakers 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 ON the ignition, with the engine OFF.
2. Turn ON the radio.
3. Adjust the radio balance and fade to the suspect speaker.

Does the speaker operate properly?

--

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

Go to Step 3

3 |

1. Turn OFF the ignition.
2. Disconnect the radio connector. Refer to Radio Replacement for service procedure.
3. Momentarily touch a 1.5 volt battery between the appropriate speaker circuits.

Does the speaker emit an audible pop?

--

Go to Step 4

Go to Step 5

4 | 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 9 | Go to Step 6
5 | Test the circuits of the appropriate speaker for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 9 | Go to Step 7
6 | Important:: Perform the set up procedure for the radio. Replace the radio. Refer to Radio Replacement for service procedure. Did you complete the replacement? | -- | Go to Step 9 | --
7 | Inspect for poor connections at the harness connector of 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 9 | Go to Step 8
8 | Replace the speaker. Refer to Radio Rear Speaker Replacement , Radio Front Side Door Lower Speaker Replacement , Front Upper Speaker Replacement , Radio Rear Side Door Speaker Replacement for service procedure. Did you complete the replacement? | -- | Go to Step 9 | --
9 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | --

## Speakers Inoperative - One or More BOSE Audio System

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
Schematic Reference: Radio/Audio System Schematics DEFINITION: This table is used to diagnose one or more speakers inoperative 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. Adjust the radio balance and fade to the suspect speaker.

Does the speaker operate properly?

--

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

Go to Step 3

3 | Measure the voltage from the suspect speaker output (+) and (-) circuits of the radio interface module (RIM) to a good ground. Does the voltage measure near the specified values? | 4.5 V-5.5 V | Go to Step 4 | Go to Step 5
4 | Measure the voltage from the suspect speaker input (+) and (-) circuits of the audio amplifier to a good ground. Does the voltage measure near the specified values? | 4.5 V-5.5 V | Go to Step 6 | Go to Step 7
5 |

1. Disconnect the RIM connector C2.
2. Disconnect the audio amplifier connector.
3. Test for a short between the (+) and (-) circuits of the suspect speaker. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 15

Go to Step 8

6 |

1. Disconnect the audio amplifier connector. Refer to Bose Module Replacement for service procedure.
2. Momentarily touch a 1.5 volt battery between the appropriate speaker circuits at the audio amplifier connector.

Does the speaker emit an audible pop?

--

Go to Step 9

Go to Step 10

7 | Test both suspect speaker circuits for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 15 | Go to Step 9
8 | Inspect for poor connections at the harness connector of the RIM. 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 15 | Go to Step 11
9 | 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 15 | Go to Step 12
10 | Test the circuits of the appropriate speaker for an open, short to ground, short to voltage or short between the speaker (+) and (-) circuits. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 15 | Go to Step 13
11 | Replace the RIM. Refer to Radio Speaker Amplifier Replacement for service procedure. Did you complete the replacement? | -- | Go to Step 15 | --
12 | Replace the audio amplifier. Refer to Bose Module Replacement for service procedure. Did you complete the replacement? | -- | Go to Step 15 | --
13 | Inspect for poor connections at the harness connector of 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 15 | Go to Step 14
14 | Replace the speaker. Refer to Radio Rear Speaker Replacement , Radio Front Side Door Lower Speaker Replacement , Front Upper Speaker Replacement , Radio Rear Side Door Speaker Replacement for service procedure. Did you complete the replacement? | -- | Go to Step 15 | --
15 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2

## Speakers Inoperative - One or More Both Front or Both Rear-BOSE System

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Radio/Audio System Schematics DEFINITION: This table is used to diagnose no sound from both front door speakers or both rear door 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. Adjust the radio balance and fade to the suspect speakers.

Do the speakers operate properly?

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

Go to Step 3

3 |

1. Turn OFF the ignition.
2. Disconnect the audio amplifier connector. Refer to Bose Module Replacement for service procedure.
3. Test the appropriate front or rear speaker output circuits of the audio amplifier for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 6

Go to Step 4

4 | 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 6 | Go to Step 5
5 | Replace the audio amplifier. Refer to Bose Module Replacement for service procedure. Did you complete the replacement? | Go to Step 6 | --
6 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2

## Speakers Inoperative - One or More LH Side or RH Side-BOSE System

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
Schematic Reference: Radio/Audio System Schematics DEFINITION: This table is used to diagnose no sound from both LH side speakers or both RH side 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. Adjust the radio balance and fade to the suspect speakers.

Do the speakers operate properly?

--

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

Go to Step 3

3 | Measure the voltage from the suspect speaker channel input (+) and (-) circuits of the radio interface module (RIM). Does the voltage measure near the specified values? | 4.5 V-5.5 V | Go to Step 4 | Go to Step 5
4 | Inspect for poor connections at the harness connector of the RIM. 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 9 | Go to Step 6
5 | Test the suspected LH side or RH side (+) and (-) circuits between the radio and the RIM for an open, short to ground, short to voltage or a short between the speaker (+) and (-) circuits. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 9

Go to Step 7

6 | Replace the RIM. Refer to Radio Speaker Amplifier Replacement for service procedure. Did you complete the replacement? | -- | Go to Step 9 | --
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 9 | Go to Step 8
8 | Important:: Perform the set up procedure for the radio. Replace the radio. Refer to Radio Replacement for service procedure. Did you complete the replacement? | -- | Go to Step 9 | --
9 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2

## Speakers Inoperative - One or More One or Both Subwoofers-BOSE System

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Radio/Audio System Schematics DEFINITION: This table is used to diagnose no sound from one subwoofer speaker or both subwoofer 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. Adjust the radio balance and fade to the suspect speakers.

Do the speakers operate properly?

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

Go to Step 3

3 | Are both rear subwoofer speakers inoperative? | Go to Step 4 | Go to Step 5
4 |

1. Disconnect the audio amplifier connector. Refer to Bose Module Replacement for service procedure.
2. Test all rear subwoofer speaker output circuits of the audio amplifier for 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 6

5 |

1. Disconnect the audio amplifier connector. Refer to Bose Module Replacement for service procedure.
2. Momentarily touch a 1.5 volt battery between the appropriate speaker circuits.

Does the speaker emit an audible pop?

Go to Step 6

Go to Step 7

6 | 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 8
7 | Test the circuits of the appropriate speaker for an open, short to ground or short between the speaker (+) and (-) circuits. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 11 | Go to Step 9
8 | Replace the audio amplifier. Refer to Bose Module Replacement for service procedure. Did you complete the replacement? | Go to Step 11 | --
9 | Inspect for poor connections at the harness connector of 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 10
10 | Replace the speaker. Refer to Radio Rear Speaker 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 | Go to Step 2