I have a 2006 ford fusion which the radio system

Inspection and Verification

1. Verify the customer concern.

1. Visually inspect the following for obvious signs of mechanical or electrical damage.

• Audio unit
• Antenna
• Antenna cable
• Door trim panel(s)
• Speaker(s)
• Noise suppression equipment

• Smart junction box (SJB) fuse(s):
  • 12 (7.5A) (accessory delay feed)
  • 17 (20A) (subwoofer amplifier) (Audiophile)
  • 18 (20A) (audio unit hot at all times)
  • 22 (7.5A) (audio unit hot in START)
• Battery junction box (BJB) fuse(s):
  • 20 (20A) (LH audio amplifier) (THX®)
  • 21 (20A) (RH audio amplifier) (THX®)
• Circuitry
• Digital signal processing (DSP) module (THX®)
• Subwoofer amplifier (Audiophile)
• Audio amplifier(s) (THX®)
• Audio unit

1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.

1. If the cause is not visually evident, connect the diagnostic tool to the data link connector (DLC) and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
   • check that the program card is correctly installed.
   • check the connections to the vehicle.
   • check the ignition switch position.

1. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.

1. Carry out the diagnostic tool data link test. If the diagnostic tool responds with:
   • CAN circuit fault; all electronic control units no response/not equipped, refer to Section 418-00 .
   • No response/not equipped for the audio unit, Go To Pinpoint Test A .
   • NOTE: Do not press any buttons on the audio unit while the audio unit is carrying out the self-test. System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs, and carry out self-test diagnostics for the audio unit.

1. If the DTCs retrieved are related to the concern, go to Audio Unit Diagnostic Trouble Code (DTC) Index.

1. If no DTCs related to the concern are retrieved, and the concern is not visually evident, proceed to the Speaker Walk-Around Test and the Audio Unit Self-Diagnostic Mode.

1. To enter the following tests, press the desired preset button while in the speaker walk-around test or while in the audio unit self-diagnostic mode.

1. To exit the audio unit self-diagnostic mode, turn the key OFF or the audio unit off.

1. If the concern remains and the fault is not detected, GO to Symptom Chart to continue diagnostics.

1. The self-diagnostic mode has the following functions available:
   • Preset button 1 = On-Demand Self-Test. This button runs the on-demand self-test.
     • Pressing the MENU DOWN button allows scrolling of any DTCs found during the test while in this menu.
   • Preset button 2 = Display Continuous DTCs. This button enables viewing of any continuous DTCs that have been logged.
     • Pressing the MENU UP button allows scrolling of any DTCs while in this menu.
     • While continuous DTCs are being displayed, pressing the EJECT button will clear all present DTCs.
   • Preset button 3 = Signal Strength Test. This button displays the signal strength.
   • Preset button 4 = Software Version Display. This button displays the audio unit software version.
     • Pressing the MENU UP button allows scrolling of all audio subsystem software versions while in this menu.
   • Preset button 5 = Display Test. This test illuminates all the display segments for 5 seconds, then turns all segments off.
   • Preset button 6 = Configuration Status. This button enables audio unit configuration status.
     • Pressing the MENU button displays the ACM part number while in this menu.

1. To exit the self-diagnostic mode, turn the audio unit off or turn the key OFF.

1. If the concern remains and the fault is not detected, GO to Symptom Chart to continue diagnostics.