Speakers Inoperative - One or More

Speakers Inoperative - One or More

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview
* Review Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Special Tools Required

J 39916-A CD Diagnostic Audio Kit

Circuit/System Testing (One or More Speakers Inoperative Without Amplifier)

1. Center the balance and fade adjustment on the radio.

• If adjustment of the fade and balance eliminates the concern, review the operation of the radio with the customer.

2. Ignition OFF, Disconnect the suspect speaker harness connector.
3. Ignition ON, operate the radio and increase the volume.
4. Verify AC voltage is present between the suspect speaker (+) and speaker (-) circuits.

• If AC voltage is present, replace the speaker.

• If AC voltage is not present repair open circuit.

5. If all circuits test normal replace the radio.

Circuit/System Testing (One or More Speakers Inoperative With Amplifier)

1. Center the balance and fade adjustment on the radio.

• If adjustment of the fade and balance eliminates the concern, review the operation of the radio with the customer.

2. Ignition OFF, Disconnect the suspect amplifier harness connector. If the suspect speaker inputs are contained in the same harness as the amplifier power and ground It will be required to re-connect the power and ground by using a fused jumper harness.
3. Ignition ON, operate the radio and increase the radio volume.
4. Verify AC voltage is not present between the suspect speaker high and speaker low circuits.

• If AC voltage is present, replace the amplifier.

5. Reconnect the amplifier harness connector.
6. Disconnect the suspect speaker harness connector.
7. Verify AC voltage is not present between the suspect speaker high and speaker low circuits.

• If AC voltage is present, replace the suspect speaker.

8. Ignition OFF, Disconnect the suspect amplifier harness connector
9. Test for less than 1 volt on both suspect speaker high and speaker low circuits.

• If greater than 1 volt repair short to voltage.

10. Test for less than 1 ohm between the suspect speaker high radio harness connector terminal and the suspect audio speaker high speaker harness connector terminal.

• If greater than specified value repair open or high resistance.

11. Test for less than 1 ohm between the suspect speaker low radio harness connector terminal and the suspect audio speaker low speaker harness connector terminal.

• If greater than specified value repair open or high resistance.

12. If all circuits test normal, replace the amplifier.

Circuit/System Testing (All Speakers Inoperative With Amplifier)

1. Ignition OFF, Disconnect the X1 amplifier harness connector.
2. Connect a test lamp between the B+ circuit connector terminal 4 (ADA/US) or 1(AUG) and ground. Verify the test lamp illuminates.

• If the test lamp does not illuminate, repair open/high resistance.

3. Connect a test lamp between the ground circuit connector terminal 8 (ADA/US) or 5 (AUG) and B+. Verify the test lamp illuminates.

• If the test lamp does not illuminate, repair short to voltage or open/high resistance.

4. Disconnect the X3 amplifier harness connector.
5. Ignition ON, test for greater than 9 volts on the radio on circuit connector terminal 8 (ADA/US) or 12 (AUG).

• If less than specified value repair open/high resistance or replace the radio.

6. If all circuits test normal, replace the amplifier.

Circuit/System Testing (Audio From Digital Radio One or More Speakers Inoperative)

1. Ignition OFF, disconnect the radio X2 harness connector.
2. Ignition ON, operate the digital radio and increase the radio volume.
3. Verify AC voltage is not present between the suspect audio signal high and audio signal low.

• If AC voltage is present, replace the radio.

4. Ignition OFF, disconnect the digital radio receiver (DRR) harness connector.
5. Test for less than 1 volt on both suspect audio signal high and audio signal low.

• If greater than 1 volt repair short to voltage.

6. Test for less than 1 ohm between the suspect audio signal high radio harness connector terminal and the suspect audio signal high digital radio X2 harness connector terminal.

• If greater than specified value repair open or high resistance.

7. Test for less than 1 ohm between the suspect audio signal low radio harness connector terminal and the suspect audio signal low digital radio X2 harness connector terminal.

• If greater than specified value repair open or high resistance.

8. If all circuits test normal, replace the digital radio receiver (DRR).

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests

* Speaker Replacement Reference