Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
DEFINITION: This table applies to vehicles with the Bose™ audio amplifier system. | ||||
1 | Did you review the radio/audio system operation and perform the necessary inspections? | -- | Go to Step 2 | Go to Symptoms |
2 | Verify that the rear speakers are distorted or inoperative. Do the speakers operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Is the vehicle an Envoy? | -- | Go to Step 4 | Go to Step 13 |
4 | Verify that the rear seat audio module power indicator is OFF. Is the power indicator OFF? | -- | Go to Step 13 | Go to Step 5 |
5 | Test CKT 314 (PNK) at the rear seat audio module for a short to voltage. Is a short to voltage present? | -- | Go to Step 6 | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems |
6 | Disconnect the rear seat audio module. Is a short to voltage present? | -- | Go to Step 8 | Go to Step 7 |
7 | Replace the rear seat audio module. Refer to Rear Seat Audio Control Replacement . Is the replacement complete? | -- | Go to Step 16 | -- |
8 | Disconnect the radio. Is a short to voltage present? | -- | Go to Step 10 | Go to Step 9 |
9 | Service the radio. Refer to Radio Replacement . Is service of the radio complete? | -- | Go to Step 16 | -- |
10 | Disconnect the amplifier. Is a short to voltage present? | -- | Go to Step 12 | Go to Step 11 |
11 | Service the amplifier. Refer to Radio Speaker Amplifier Replacement . Is service of the amplifier complete? | -- | Go to Step 16 | -- |
12 | Repair the short to voltage in CKT 314 (PNK). Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 16 | -- |
13 |
Important: The audio signal can be identified as a fluctuating AC voltage. Measure from the channel input cavity to the channel common ground cavity.
Is the audio signal present at one input? | 0-1.5 V AC | Go to Step 11 | Go to Step 14 |
14 |
Is the audio signal present at both outputs? | 0-1.5 V AC | Go to Step 15 | Go to Step 9 |
15 | Repair the open in CKT 1547 (DK GRN/WHT. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 16 | -- |
16 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 3 |
