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HOMESERVICE MANUALSMINI2013COOPER COUNTRYMAN, STANDARD TRANSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 975 (ENGINE ELECTRICAL SYSTEM - REPAIR INSTRUCTIONS)IGNITION COIL12 13... IGNITION COIL FAULTS
2013 Mini Cooper Countryman, Standard Trans

12 13... Ignition Coil Faults

2013 Mini Cooper Countryman, Standard TransSECTION 12 13... Ignition Coil Faults
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Evaluation of ignition voltage peaks and attenuation process at idling speed:

  1. Beginning of attenuation processes with normal peaks upwards and downwards.
  2. Beginning of attenuation processes strongly shortened Ignition coil is defective.
  3. Absence of initial downwards attenuation Ignition coil is defective.
    NOTE: Higher ignition voltage peak is not always available.
    4. Fig 1: Evaluation Of Ignition Voltage Peaks & Attenuation Process
    G00313217Courtesy of BMW OF NORTH AMERICA, INC.

Evaluation of sparking voltage line at idling speed:

  1. Normal combustion period.
  2. Normal attenuations to sparking voltage line. Ignition coil is OK.
    3. Fig 2: Evaluation Of Sparking Voltage - Normal Combustion Period
    G00313218Courtesy of BMW OF NORTH AMERICA, INC.
  1. Shorter sparking period.
  2. Attenuation to sparking voltage line is only slight. Ignition coil is defective.
    3. Fig 3: Evaluation Of Sparking Voltage - Shorter Period
    G00313219Courtesy of BMW OF NORTH AMERICA, INC.
  1. Much shorter sparking period.
  2. Attenuations to sparking voltage line absent. Ignition coil is defective.
    3. Fig 4: Evaluation Of Sparking Voltage - Much Shorter Period
    G00313220Courtesy of BMW OF NORTH AMERICA, INC.

No sparking voltage line. Ignition coil is defective.

Fig 5: Evaluation Of Sparking Voltage - No Sparking Voltage Line
G00313221Courtesy of BMW OF NORTH AMERICA, INC.

Evaluation of combustion voltage line at raised engine speeds approx. 1500 Min (1):

  1. Normal combustion period.
  2. Normal attenuations to sparking voltage line. Ignition coil is OK.
    3. Fig 6: Evaluation Of Combustion Voltage Line - Normal Combustion Period
    G00313222Courtesy of BMW OF NORTH AMERICA, INC.
  1. Shorter sparking period.
  2. Attenuation to sparking voltage line is only slight. Ignition coil is defective.
    3. Fig 7: Evaluation Of Combustion Voltage Line - Shorter Sparking Period
    G00313223Courtesy of BMW OF NORTH AMERICA, INC.
  1. Normal combustion period.
  2. Attenuations to sparking voltage line absent. Ignition coil is defective.
    3. Fig 8: Evaluation Of Combustion Voltage Line - Normal Combustion Period
    G00313224Courtesy of BMW OF NORTH AMERICA, INC.

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

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  • • The engine overheats, stalls repeatedly, or misfires under load.
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