For 1990-2009 cars

Step | Action | Value(s) | 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. Insert the tape or CD from the J 39916-A .

Can audio be heard from all speakers?

--

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

Go to Step 3

3 | Measure the voltage from the battery positive voltage circuit of the radio speaker amplifier and a good ground. Does the voltage measure near the specified value? | 12 V | Go to Step 4 | Go to Step 5
4 |

1. Turn ON the ignition, with the engine OFF.
2. Turn ON the radio.
3. Measure the voltage from the amp enable circuit of the radio speaker amplifier and a good ground.

Does the voltage measure near the specified value?

12 V

Go to Step 6

Go to Step 7

5 | Test the battery positive voltage circuit of the radio speaker amplifier for an open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 14 | --
6 | Test the ground circuit between the radio interface module (RIM) and the radio speaker amplifier for an open or short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 14 | Go to Step 8
7 | Test the amp enable circuit between the radio interface module (RIM) and the radio speaker amplifier for an open or a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 14 | Go to Step 9
8 | Test the shield wire circuits of the RIM 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 14 | Go to Step 10
9 | 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 14 | Go to Step 11
10 |

1. Disconnect the radio connector. Refer to Radio Replacement for service procedure.
2. Test the shield wire circuits of the radio for a short to voltage. 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 14

Go to Step 12

11 | Replace the RIM. Refer to Radio Speaker Amplifier Replacement for service procedure. Did you complete the replacement? | -- | Go to Step 14 | --
12 | Inspect for poor connections at the harness connector of the radio speaker 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 14 | Go to Step 13
13 | Replace the radio speaker amplifier. Refer to Bose Module Replacement for service procedure. Did you complete the replacement? | -- | Go to Step 14 | --
14 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | --