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Diagnosis And Testing - Speaker

WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

Any diagnosis of the Audio system should begin with the use of a scan tool and the appropriate Diagnostics Information. 

Refer to the appropriate wiring information.

WARNING:

Disable the airbag system before attempting any steering wheel, steering column, seat belt tensioner, side airbag or instrument panel component diagnosis or service. Disconnect and isolate the negative battery (ground) cable. Wait two minutes for the airbag system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the airbag system. Failure to follow these instructions may result in accidental airbag deployment and possible serious or fatal injury.

CAUTION:

The speaker output of the radio is a "floating ground" system. Do not allow any speaker lead to short to ground, as damage to the radio may result.

  1. Turn the ignition switch to the On position. Turn the radio receiver on. Adjust the balance and fader controls to check the performance of each individual speaker. Note the speaker locations that are not performing correctly. Go to  2.
    NOTE:

    Subwoofer channel will not fade forward or rearward. Use the bass control to check the subwoofer channel output.

  2. Turn the radio receiver off. Turn the ignition switch to the Off position. Disconnect and isolate the battery negative cable. Remove the radio receiver from the instrument panel. Disconnect the wire harness connector at the power amplifier. Check both the speaker feed (+) circuit and return (-) circuit cavities for the inoperative speaker location(s) at the radio receiver wire harness connectors for continuity to ground. In each case, there should be no continuity. If OK, go to  3. If not OK, repair the shorted speaker feed (+) and/or return (-) circuit(s) to the speaker as required.
  3. For each inoperative speaker location, check for continuity between the speaker feed (+) circuit cavities of the radio receiver wire harness connectors and the power amplifier wire harness connectors. Repeat the check for each inoperative speaker location between the speaker return (-) circuit cavities of the radio receiver wire harness connectors and the power amplifier wire harness connectors. In each case, there should be continuity. If OK, go to  4. If not OK, repair the open speaker feed (+) and/or return (-) circuit(s) as required.
  4. Check for continuity between the two ground circuit cavities of the power amplifier wire harness connector and a good ground. There should be continuity. If OK, go to  5. If not OK, repair the open ground circuit(s) to ground as required.
  5. Install the radio receiver. Connect the battery negative cable. Check for battery voltage at the fused B(+) fuse for the power amplifier in the Power Distribution Center (PDC). If OK, go to  6. If not OK, repair the open fused B(+) circuit to the PDC fuse as required.
  6. Check for battery voltage at the two fused B(+) circuit cavities of the power amplifier wire harness connector. If OK, go to  7. If not OK, repair the open fused B(+) circuit(s) to the power amplifier fuse in the junction block as required.
  7. Turn the ignition switch to the On position. Turn the radio receiver on. Check for battery voltage at the enable signal to amplifier circuit cavity of the power amplifier wire harness connector. If OK, go to  8. If not OK, repair the open enable signal to amplifier circuit to the radio receiver as required.
  8. Turn the radio receiver off. Turn the ignition switch to the Off position. Disconnect and isolate the battery negative cable. For each inoperative speaker location, check both the amplified feed (+) circuit and the amplified return (-) circuit cavities of the power amplifier wire harness connectors for continuity to ground. In each case there should be no continuity. If OK, go to  9. If not OK, repair the shorted amplified feed (+) and/or amplified return (-) circuit(s) to the speaker as required.
  9. Disconnect the speaker wire harness connector at the inoperative speaker. Check for continuity between the amplified feed (+) circuit cavities of the speaker wire harness connector and the power amplifier wire harness connector. Repeat the check between the amplified return (-) circuit cavities of the speaker wire harness connector and the power amplifier wire harness connector. In each case there should be continuity. If OK, replace the faulty speaker. If not OK, repair the open amplified feed (+) and/or amplified return (-) circuit(s) as required. If condition is still present, go to  10.
  10. For each inoperative speaker location, check the resistance between the amplified feed (+) circuit and the amplified return (-) circuit cavities of the power amplifier wire harness connectors. The meter should read between 3 and 5 ohms (speaker resistance). If OK, replace the faulty power amplifier.
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