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For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1997 🢒 Corvette 🢒 Body and Accessories 🢒 Entertainment 🢒 One or Two Subwoofer are Inoperative

One or Two Subwoofer(s) are Inoperative

Step

Action

Value(s)

Yes

No

DEFINITION: Either one or both of the front amplified subwoofers are not operating correctly.

1

Where you sent here from the Audio Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Radio/Audio System

2

Are both of the front amplified subwoofers inoperative?

Go to Step 19

Go to Step 3

3
  1. Disconnect the inoperative speaker connector.
  2. Turn the ignition switch to ON.
  3. Turn the radio ON.
  4. Using a DMM, measure the voltage between the speaker connector terminal A and ground.

Is the voltage within the specified values?

10.0-14.0V

Go to Step 4

Go to Step 9

4

Using a DMM, measure the voltage at the speaker connector from terminal H to ground.

Is the measured voltage within the specified values?

10.0-14.0V

Go to Step 5

Go to Step 9

5

Using a DMM, measure the voltage at the speaker connector from terminal A to terminal B.

Is the measured voltage within the specified values?

10.0-14.0V

Go to Step 6

Go to Step 10

6

Using a DMM, measure the voltage at the speaker connector from terminal A to terminal G.

Is the measured voltage within the specified values?

10.0-14.0V

Go to Step 7

Go to Step 10

7
  1. Turn the radio to OFF.
  2. Turn the ignition switch to OFF.
  3. Disconnect the Bose® Signal Processor connector.
  4. Using a DMM, measure the resistance to ground between the speaker connector terminal C and ground.

Is the resistance infinite?

Go to Step 8

Go to Step 11

8

Using a DMM, measure the resistance to ground between the speaker connector terminal F and ground.

Is the resistance infinite?

Go to Step 13

Go to Step 12

9

Repair the open in CKT 360.

Is the repair complete?

Go to Diagnostic System Check - Radio/Audio System

10

Repair the open in CKT 351 between the inoperative speaker connector and G201.

Is the repair complete?

Go to Diagnostic System Check - Radio/Audio System

11
    • (Right side) Repair the short to ground in CKT 1726.
    • (Left side) Repair the short to ground in CKT 1725.

Is the repair complete?

Go to Diagnostic System Check - Radio/Audio System

12
    • (Right side) Repair the short to ground in CKT 512.
    • (Left side) Repair the short to ground in CKT 511.

Is the repair complete?

Go to Diagnostic System Check - Radio/Audio System

13
  1. Reconnect the Bose® Signal Processor connector.
  2. Connect a DMM between the speaker connector terminal C and terminal F.
  3. Set the DMM to the low AC voltage scale between 0 and 10 volts.
  4. Turn the ignition switch to ON.
  5. Tune the radio to a strong station and set the volume to medium.
  6. Adjust the Fade control to the suspect speaker.

Does the DMM read a varying voltage of approximately .1 volts to 2 volt?

Go to Step 14

Go to Step 15

14

Replace the inoperative speaker.

Is the repair complete?

Go to Diagnostic System Check - Radio/Audio System

15
  1. Turn the radio to OFF.
  2. Turn the ignition switch OFF.
  3. Disconnect the Bose® Signal Processor connector.
  4. (Left side) Using a DMM, measure for continuity between the speaker connector terminal C and the Bose® Signal Processor connector terminal A3. (Right side) Using a DMM, measure for continuity between the speaker connector terminal C and the Bose® Signal Processor connector terminal A9.

Is the CKT 1725 or CKT 1726 continuous between the speaker and Bose® Signal Processor connectors?

Go to Step 16

Go to Step 25

16
    • (Left side) Using a DMM, measure for continuity between the speaker connector terminal F and the Bose® Signal Processor connector terminal B11.
    • (Right side) Using a DMM, measure for continuity between the speaker connector terminal F and the Bose® Signal Processor connector terminal A11.

Is the CKT 511 or CKT 512 continuous between the speaker and Bose® Signal Processor connectors?

Go to Step 17

Go to Step 26

17
  1. (Left side) Connect a DMM between the Bose® Signal Processor connector terminal A4 and terminal B5. (Right side) Connect a DMM between the Bose® Signal Processor connector terminal B7 and terminal A4.
  2. Set the DMM to the low AC voltage scale between 0 and 10 volts.
  3. Turn the ignition switch to ON.
  4. Tune the radio to a strong station and set the volume to medium.
  5. Adjust the Fade control to the suspect speaker.

Does the DMM read a varying voltage of approximately .1 volts to 2 volts?

Go to Step 18

Go to Step 19

18
  1. (Left side) Connect a DMM between the Bose® Signal Processor connector terminal A4 and terminal B6. (Right side) Connect a DMM between the Bose® Signal Processor connector terminal B8 and terminal A4.
  2. Set the DMM to the low AC voltage scale between 1 and 10 volts.
  3. Turn the ignition switch to ON.
  4. Tune the radio to a strong station and set the volume to high.
  5. Adjust the Fade control to the suspect speaker.

Does the DMM read a varying voltage of approximately .1 volts to 2 volts?

Go to Step 23

Go to Step 20

19
  1. Turn the radio to OFF.
  2. Turn the ignition switch OFF.
  3. Disconnect the radio connector C3.
  4. (Left side) Using a DMM, measure for continuity between the radio connector C3 terminal 9 and the Bose® Signal Processor connector terminal B5. (Right side) Using a DMM, measure for continuity between the radio connector C3 terminal 10 and the Bose® Signal Processor connector terminal B7.

Is the CKT 511 or CKT 512 continuous between the radio and Bose® Signal Processor connectors?

Go to Step 21

Go to Step 26

20
  1. Turn the radio to OFF.
  2. Turn the ignition switch OFF.
  3. Disconnect the radio connector C3.
  4. (Left side) Using a DMM, measure for continuity between the radio connector C3 terminal 11 and the Bose® Signal Processor connector terminal B6. (Right side) Using a DMM, measure for continuity between the radio connector C3 terminal 12 and the Bose® Signal Processor connector terminal B8.

Is the CKT 599 or CKT 546 continuous between the radio and Bose® Signal Processor connectors?

Go to Step 22

Go to Step 27

21
    • (Left side) Using a DMM, measure the resistance between the radio connector C3 terminal 9 and ground.
    • (Right side) Using a DMM, measure the resistance between the radio connector C3 terminal 10 and ground.

Is the resistance infinite?

Go to Step 24

Go to Step 12

22
    • (Left side) Using a DMM, measure the resistance between the radio connector C3 terminal 11 and ground.
    • (Right side) Using a DMM, measure the resistance between the radio connector C3 terminal 12 and ground.

Is the resistance infinite?

Go to Step 24

Go to Step 28

23

Replace the Bose® Signal Processor.

Is the repair complete?

Go to Diagnostic System Check - Radio/Audio System

24

Replace the radio.

Is the repair complete?

Go to Diagnostic System Check - Radio/Audio System

25
    • (Right side) Repair the open in CKT 1726.
    • (Left side) Repair the open in CKT 1725.

Is the repair complete?

Go to Diagnostic System Check - Radio/Audio System

26
    • (Right side) Repair the open in CKT 512.
    • (Left side) Repair the open in CKT 511.

Is the repair complete?

Go to Diagnostic System Check - Radio/Audio System

27
    • (Right side) Repair the open in CKT 599.
    • (Left side) Repair the open in CKT 546.

Is the repair complete?

Go to Diagnostic System Check - Radio/Audio System

28
    • (Right side) Repair the short to ground in CKT 599.
    • (Left side) Repair the short to ground in CKT 546.

Is the repair complete?

Go to Diagnostic System Check - Radio/Audio System