Speakers Inoperative - One or More W/ U85
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 | Go to Symptoms - Entertainment |
2 | Verify the fault is present. Does the system operate normally? | -- | 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 4 | Go to Step 7 |
4 | Test the battery positive voltage circuit for an open. Refer to Circuit Testing in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 13 | Go to Step 5 |
5 | Test the ground circuit for an open. Refer to Circuit Testing in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 13 | Go to Step 6 |
6 | Test the radio on signal circuit for an open or a short to ground. Refer to Circuit Testing in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 13 | Go to Step 7 |
7 |
Is the measured voltage within the specified range? | 0.1-3 V AC | Go to Step 9 | Go to Step 8 |
8 | Repair an open or a short to ground in the suspect low level audio circuit. Refer to Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 13 | Go to Step 11 |
9 | Test the suspect speaker output circuits for an open, or short to ground, or short to B+. Refer to Circuit Testing in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 13 | Go to Step 10 |
10 |
Is the repair complete? | -- | Go to Step 13 | Go to Step 12 |
11 |
Is the repair complete? | -- | Go to Step 13 | -- |
12 |
Is the repair complete? | -- | Go to Step 13 | -- |
13 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 3 |
Speakers Inoperative - One or More W/O U85
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 Symptoms - Entertainment |
2 | Adjust the radio balance and fade to the suspect speaker. Do 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 7 | Go to Step 4 |
4 |
Does the speaker emit an audible pop? | Go to Step 8 | Go to Step 5 |
5 | Test the speaker output circuits of the suspect 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 11 | Go to Step 6 |
6 | 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 |
7 | Test all speaker circuits for a short to B+ or short to ground. 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 |
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 Radio Front Speaker Replacement or Radio Rear Speaker Replacement . 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 correct the condition? | System OK | Go to Step 2 |
