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HOMESERVICE MANUALSFORD2005TAURUS SEL, 4D SEDANREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 718 (INFORMATION AND ENTERTAINMENT SYSTEMS)DIAGNOSTIC TESTSINFORMATION AND ENTERTAINMENT SYSTEMSYMPTOM CHART
2005 Ford Taurus SEL, 4D Sedan

Symptom Chart

2005 Ford Taurus SEL, 4D SedanSECTION Symptom Chart
WARNING: This page is about a different car, the 2007 Lincoln Mark LT and 2007 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
Symptom Chart - Audio System

Condition Possible Sources Action
  • The audio unit is inoperative
  • Fuse
  • Circuitry
  • Audio unit
  • The satellite audio is inoperative/does not operate correctly
  • Circuitry
  • Satellite radio receiver
  • Audio unit
  • During SAT mode, the audio unit displays: NO AUX AUDIO
  • Circuitry
  • Satellite radio receiver
  • Audio unit
  • Poor reception - AM/FM
  • Antenna
  • Antenna cable
  • Charging system
  • Ignition system
  • Noise suppression equipment
  • Radio ignition interference capacitor
  • Audio unit
  • Poor reception - satellite audio
  • Obstructions to the line of sight
  • DRIVE the vehicle to an open area and TEST the reception.
    • If the reception is OK, INFORM the customer of the normal condition.
 
  • Satellite antenna cable
  • Satellite antenna
  • Satellite radio receiver
  • Continuous SEEK/SCAN in AM/FM
  • RDS function setting
  • VERIFY the RDS is set to ALL. SCAN for a good channel.
    • If a good channel is found, the cause of the concern was that no RDS channel in the selected category was found. The system is OK.
 
  • Antenna
  • Antenna cable(s)
  • Charging system
  • Ignition system
  • Noise suppression equipment
  • Audio unit
  • Poor quality/distorted/no sound from one or more speakers (not all speakers)
  • Circuitry
  • Speaker
  • DVD player
  • Audio unit
  • No sound from all speakers
  • Circuitry
  • Audio unit
  • With the key in any position except START, MEASURE the voltage between the audio unit C290a-15, circuit 1000 (RD/BK) or 325 (DB/OG), harness side and ground.
    • If any voltage is present, REPAIR the circuit. TEST the system for normal operation.
    • If no voltage is present, SEND the audio unit to an authorized audio system repair facility. TEST the system for normal operation after the repair.
  • Poor quality/distorted sound from all speakers
  • Audio unit
  • REMOVE the audio unit and SEND it to an authorized audio system repair facility. REFER to Audio Unit  in this article. TEST the system for normal operation after the repair.
  • The subwoofer is inoperative/does not operate correctly
  • Fuse
  • Circuitry
  • Subwoofer
  • Audio unit
  • Loud popping sound when cycling the ignition switch
  • Fuse
  • Circuitry
  • Subwoofer
  • Audio unit
  • The speed sensitive volume is inoperative/does not operate correctly
  • Circuitry
  • Speed sensitive volume setting
  • Audio unit
  • Powertrain control module (PCM)
  • The steering wheel controls are inoperative
  • Circuitry
  • Steering wheel controls harness
  • Steering wheel controls
  • Clockspring
  • Audio unit
  • The audio input jack is inoperative/does not operate correctly - audio units with external audio input jack
  • Circuitry
  • Audio input jack
  • Audio unit
    NOTE: Be sure the portable MP3 device is functioning properly before diagnosing the audio input jack.
  • Go to Pinpoint Test M .
  • The video system is inoperative
  • Fuse
  • Circuitry
  • DVD play buttons disabled
  • DVD player
  • DVD or compact disc (CD)
  • The video system does not operate correctly - no sound from one or more speakers (not all speakers)
  • Circuitry
  • DVD player
  • DVD or CD
  • Audio unit
  • If the speakers operate normally in tuner mode, go to Pinpoint Test G . If the speakers are inoperative when in tuner mode and when using the DVD player, go to Pinpoint Test C .
  • No sound from the wireless headphones
  • DUAL PLAY not selected
  • Headphone batteries
  • Headphones
  • DVD player
  • SIMULTANEOUSLY PRESS the audio unit preset buttons 2 and 4 until the audio unit displays DUAL PLAY. REPEATEDLY PRESS the SRC/PWR button on the DVD player and ADJUST the headphone volume until a source can be heard.
    • If no source can be heard, SUBSTITUTE a known good pair of batteries and then the wireless headphones. REPEAT the above action.
    • If a source can be heard, NOTIFY the customer. The system is operating correctly.
      NOTE: When the DVD player is unplugged and not replaced, the rear speakers are not connected.
    • If there is still no sound, REMOVE the DVD player and SEND it to an authorized audio system repair facility. REFER to Digital Versatile Disc (DVD) Player  in this article. TEST the system for normal operation after the repair.
  • Intermittent sound from the wireless headphones
  • Obstructions between the DVD player transmitter and the headphones
  • Infrared technology is line-of-sight dependant. CLEAR all possible obstructions. TEST the system for normal operation.
 
  • Sunlight washout
  • Infrared technology is subject to a reduction in effectiveness given extreme exposure to sunlight. If excessive sunlight exposure is suspected, MOVE the vehicle to a shaded or darkened area. TEST the system for normal operation. To verify the condition, RETURN the vehicle to sunlit conditions and RETEST.
Symptom Chart - Navigation

Condition Possible Sources Action
  • No global positioning system (GPS) antenna signal
  • GPS antenna
  • Audio unit
  • The position cursor is inoperative
  • Audio unit
  • CHECK the anti-lock brake system (ABS) module for DTCs.
    • If no ABS module DTCs are present, DIAGNOSE any audio unit DTCs. If the symptom is present after all audio unit DTCs are addressed, REMOVE the audio unit and SEND it to an authorized audio system repair facility. REFER to Audio Unit  in this article. TEST the system for normal operation after the repair.
  • The audible switch feedback is inoperative
  • Audible switch feedback setting
  • Audio unit
  • The voice guidance is inoperative/does not operate correctly
  • Voice guidance setting
  • Audio unit
  • The display screen is inoperative
  • Audio unit
  • REMOVE the audio unit and SEND it to an authorized audio system repair facility. REFER to Audio Unit  in this article. TEST the system for normal operation after the repair.
  • Unable to insert or eject map disc
  • Audio unit
  • REMOVE the audio unit and SEND it to an authorized audio system repair facility. REFER to Audio Unit  in this article. TEST the system for normal operation after the repair.
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