Step | Action | Value(s) | 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 | |
2 |
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 10 | Go to Step 4 |
4 | Is an audio amplifier installed in the Radio/Audio System? | -- | Go to Step 6 | Go to Step 5 |
5 |
Does the speaker emit an audible pop? | -- | Go to Step 15 | Go to Step 9 |
6 |
Does the voltage measure greater than the specified value? | 0.020 V | Go to Step 7 | Go to Step 8 |
7 | Test the appropriate speaker output circuits of the audio amplifier 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 21 | Go to Step 14 |
8 | Test the appropriate speaker input circuits of the audio amplifier 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 21 | Go to Step 15 |
9 | Test the appropriate speaker output circuits of the radio for a short or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 21 | Go to Step 17 |
10 |
Did you find and correct the condition? | -- | Go to Step 21 | Go to Step 11 |
11 | Is an audio amplifier installed in the Radio/Audio System? | -- | Go to Step 12 | Go to Step 15 |
12 |
Did you find and correct the condition? | -- | Go to Step 21 | Go to Step 13 |
13 | Test the ground circuit of the audio amplifier for 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 21 | Go to Step 16 |
14 |
Does the voltage measure greater than the specified value? | 0.020 V | Go to Step 17 | Go to Step 16 |
15 | 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 21 | Go to Step 18 |
16 | 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 21 | Go to Step 19 |
17 | Inspect for poor connections at the harness connector of the appropriate 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 21 | Go to Step 20 |
18 | Replace the radio. Refer to Radio Replacement . Did you complete the replacement? | -- | Go to Step 21 | -- |
19 | Replace the audio amplifier. Refer to Radio Speaker Amplifier Replacement . Did you complete the replacement? | -- | Go to Step 21 | -- |
20 | Replace the suspect speaker. Refer to Speaker Replacement Reference Did you complete the replacement? | -- | Go to Step 21 | -- |
21 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
