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Home >> Jeep >> 2007 >> Commander Base, 4.7 P, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Audio System & Video System - Electrical Diagnosis >> Audio/Video Systems - Electrical Diagnosis >> Diagnosis And Testing >> B1477-Channel 5 Audio Speaker Output Circuit Open >> Diagnostic Test
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Diagnostic Test

  1. 1) CHECK FOR AN INTERMITTENT CONDITION 

    Turn the ignition on.

    Turn the radio on.

    With the scan tool, erase Amplifier DTCs.

    With the scan tool, reset the amplifier.

    With the scan tool, read Amplifier DTCs.

    Does the scan tool display active: B1477-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT OPEN? 

    Yes 

    1. Go to  2).

    No 

    1. The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
    2. Perform BODY VERIFICATION TEST .
  2. 2) CHECK THE OPERATION OF THE LEFT REAR DOOR SPEAKER 
    Fig 1: Checking Amplified Left Rear Door Speaker Circuit
    GC0012072Courtesy of CHRYSLER LLC

    Disconnect the Left Rear Door Speaker harness connector.

    Turn the radio on and turn the volume to mid level.

    With a voltmeter set to read in A/C voltage, measure the voltage of the Amplified Left Rear Door Speaker circuits in the Amplified Left Rear Door Speaker harness connector.

    Is the voltage present greater than 1 volt? 

    Yes 

    1. Replace the Amplified Left I/P Speaker in accordance with the service information.
    2. Perform BODY VERIFICATION TEST .

    No 

    1. Go to  3).
  3. 3) CHECK THE (X205) AMPLIFIED LEFT REAR DOOR SPEAKER (+) CIRCUIT FOR AN OPEN 
    Fig 2: Measuring Resistance Of Amplified Left Rear Door Speaker (+) Circuit
    GC0012073Courtesy of CHRYSLER LLC

    Turn the ignition off.

    Disconnect the Amplifier C1 harness connector.

    Measure the resistance of the (X205) Amplified Left Rear Door Speaker (+) circuit between the Amplifier C1 harness connector and the Amplified Left Rear Door Speaker harness connector.

    Is the resistance below 5.0 ohms? 

    Yes 

    1. Go to  4).

    No 

    1. Repair the (X205) Amplified Left Rear Door Speaker (+) circuit for an open.
    2. Perform BODY VERIFICATION TEST .
  4. 4) CHECK THE (X295) AMPLIFIED LEFT REAR DOOR SPEAKER (-) CIRCUIT FOR AN OPEN 
    Fig 3: Measuring Resistance Of Amplified Left Rear Door Speaker (-) Circuit
    GC0012074Courtesy of CHRYSLER LLC

    Turn the ignition off.

    Disconnect the Amplifier C1 harness connector.

    Measure the resistance of the (X295) Amplified Left Rear Door Speaker (-) circuit between the Amplifier C1 harness connector and the Amplified Left Rear Door Speaker harness connector.

    Is the resistance below 5.0 ohms? 

    Yes 

    1. Replace the Amplifier in accordance with the service information.
    2. Perform BODY VERIFICATION TEST .

    No 

    1. Repair the (X295) Amplified Left Rear Door Speaker (-) circuit for an open.
    2. Perform BODY VERIFICATION TEST .
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