Speakers Inoperative - All

Speakers Inoperative - All

Diagnostic Fault Information

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview

Circuit/System Testing

Important: Diagnose any communication DTCs before performing this diagnostic.

1. Disconnect the harness connector at the amplifier that contains the suspect inoperative channel. Connect a DMM between the suspect low level audio signal circuits and operate the radio.

• If AC voltage is not present on all inputs, replace the radio.

2. At the amplifier harness connector, test for less than 1 ohm of resistance between the ground circuit terminal and ground.

• If greater than the specified range, test the ground circuit for an open/high resistance.

3. Verify that a test lamp illuminates between the B+ circuit terminal and ground.

• If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.

• If all circuits test normal, replace the amplifier.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

* Programming and RelearningProgramming and Relearning
* Speaker Replacement Reference Verification Tests