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HOMESERVICE MANUALSMERCURY2010MARINER HYBRID, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1108 (INFORMATION SYSTEM AND ENTERTAINMENT SYSTEMS)DIAGNOSTIC TESTSINFORMATION AND ENTERTAINMENT SYSTEMSYMPTOM CHART
2010 Mercury Mariner Hybrid, AWD

Symptom Chart

2010 Mercury Mariner Hybrid, AWDSECTION Symptom Chart
WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, 2008 Ford E450 Super Duty, and 2008 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
Symptom Chart

Condition Possible Sources Action
  • The audio unit is inoperative/does not operate correctly
  • Fuse
  • Wiring, terminals or connectors
  • Audio unit
  • The CD player is inoperative/does not operate correctly
  • Audio unit
  • INSTALL a new audio unit. REFER to Audio Unit . TEST the system for normal operation.
  • The audio unit does not operate correctly - display is blank
  • Audio unit
  • INSTALL a new audio unit. REFER to Audio Unit . TEST the system for normal operation.
  • Poor reception
  • Antenna
  • Antenna cable
  • Generator
  • Ignition system
  • Noise suppression equipment
  • Audio unit
  • Continuous seek/scan in AM/FM
  • RDS function setting
  • VERIFY the RDS is set to ALL. REFER to the Owner's Literature. 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 connections
  • Audio unit
  • Poor quality/distorted sound from one or more speakers (not all speakers)
  • Wiring, terminals or connectors
  • Loose trim panel
  • Speaker
  • Audio unit
  • Poor quality/distorted sound from all speakers
  • Audio unit
  • INSTALL a new audio unit. REFER to Audio Unit . TEST the system for normal operation.
  • No sound from one or more of the speakers (not all speakers)
  • Wiring, terminals or connectors
  • Speaker
  • Audio unit
  • No sound from all speakers
  • Speaker(s)
  • Wiring, terminals or connectors
  • Audio unit
  • With the key in any position except START, MEASURE the voltage between the audio unit C240-3, circuit 1000 (RD/BK), harness side and ground.
    • If voltage is present, REPAIR the circuit. TEST the system for normal operation.
    • If no voltage is present, INSTALL a new audio unit. REFER to Audio Unit . TEST the system for normal operation.
  • Loud popping sound when cycling the ignition switch
  • Fuse
  • Wiring, terminals or connectors
  • Audio unit
  • With the key in START, MEASURE the voltage between the audio unit C240-3, circuit 1000 (RD/BK), harness side and ground.
    • If the voltage is less than 10 volts, CHECK the central junction box (CJB) fuse 27 (5A). If OK, REPAIR the circuit. TEST the system for normal operation.
    • If the voltage is 10 volts or greater, INSTALL a new audio unit. REFER to Audio Unit . TEST the system for normal operation.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.