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WHITE MESSAGE Require immediate crew attention. These messages are accompanied by flashing master warning, triple chime attenson with or without voice message or dedicated tone. Require immediate crew awareness and future crew action may be required in the form of alternate system selection or performance limitation. These message are accompanied by flashing master caution and a single chime. Indicate safe or normal system operation which require crew awareness, over and above the dark cockpit philosophy. Indicate minor failures or reduction in systems capability, which require no crew action.

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09/20/19

Message Overview:

Fault Message:

SHORT-START CNTR/TIME TOT METER/WRG

Fault Code:

4960282APU

Associated CAS:

None

Reporting LRU: Full-Authority Digital Engine-Controller (FADEC)
System Description: 49-70-00
Schematic Diagram: 49-61-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 49-12-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]
49-61-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

The Full-Authority Digital Engine-Controller (FADEC) cannot read data from the Time Totalizing Meter or from the Start Counter Meter because the resistance of the load is low. This shows a possible short circuit in the Time Totalizing Meter, Start Counter Meter, the engine branched wiring-harness or the aircraft wiring harness.

Possible Causes:

  • Auxiliary Power Unit (APU) Full-Authority Digital Engine-Controller (FADEC) (A108)
  • Time Totalizing Meter (M1)
  • Start Counter Meter (M2)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

APU Safety Precautions AMM 49-00-00-910-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Engine Branched Wiring-Harness AMM 49-12-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Engine Branched Wiring-Harness AMM 49-12-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Full-Authority Digital Engine-Controller
(FADEC)		 AMM 49-61-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Full-Authority Digital Engine-Controller
(FADEC)		 AMM 49-61-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Time Totalizing Meter AMM 49-70-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Time Totalizing Meter AMM 49-70-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Start Counter Meter AMM 49-70-05-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Start Counter Meter AMM 49-70-05-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Examine the engine branched wiring-harness for bare wiring, kinks, worn areas and other damage (WM 49-12).

    1. If there is bare wiring, kinks, worn areas or other damage, replace engine branched wiring-harness and do close out.
    2. If there is no bare wiring, kinks, worn areas or other damage, coninue with next step.

  2. If the message SHORT-START CNTR/TIME TOT METER/WRG still shows on the CAIMS PMAT, examine the time totalizing meter (M1) receptacle for contamination and damage.

    1. If there is contamination or damage, replace the time totalizing meter (M1) and do close out.
    2. If there is no contamination or damage, continue with next step.

  3. If the message SHORT-START CNTR/TIME TOT METER/WRG still shows on the CAIMS PMAT, examine the start-counter meter (M2) receptacle for contamination and damage.

    1. If there is contamination or damage, replace the start counter meter (M2) and do close out.
    2. If there is no contamination or damage, continue with next step.

  4. If the message SHORT-START CNTR/TIME TOT METER/WRG still shows on the CAIMS PMAT, connect the hour meter/start counter reader to the time totalizing meter (M1). Push down and hold the push-button on the hour meter/start counter reader.

    1. If there is no data on the EVENTS LED, replace the time totalizing meter (M1) and do close out.
    2. If there is data on the EVENTS LED, continue with next step.

  5. If the message SHORT-START CNTR/TIME TOT METER/WRG still shows on the CAIMS PMAT, perform a check for insulation resistance between the pins of connector M2P1 (WM 49-12). The resistance should measure as follows:

    From To Expected Result Result
    M2P1-A M2P1-B >1 megohm

    1. If the resistance is not as mentioned above, replace engine branched wiring-harness and do close out.
    2. If the resistance is as mentioned above, continue with next step.

  6. If the message SHORT-START CNTR/TIME TOT METER/WRG still shows on the CAIMS PMAT, perform a check for insulation resistance between each pin that follows and the ground shell (WM 49-12). The resistance should measure as follows:

    From To Expected Result Result
    P802-67 Ground Shell >1 megohm
    P802-68 Ground Shell >1 megohm
    P802-69 Ground Shell >1 megohm
    M2P1-A Ground Shell >1 megohm
    M2P1-B Ground Shell >1 megohm
    M2P1-C Ground Shell >1 megohm

    1. If the resistance is not as mentioned above, replace engine branched wiring-harness and do close out.
    2. If the resistance is as mentioned above, continue with next step.

  7. If the message SHORT-START CNTR/TIME TOT METER/WRG still shows on the CAIMS PMAT, perform a check for insulation resistance between the pins of connector M1P1 (WM 49-12). The resistance should measure as follows:

    From To Expected Result Result
    M1P1-A M1P1-B >1 megohm

    1. If the resistance is not as mentioned above, replace engine branched wiring-harness and do close out.
    2. If the resistance is as mentioned above, continue with next step.

  8. If the message SHORT-START CNTR/TIME TOT METER/WRG still shows on the CAIMS PMAT, perform a check for insulation resistance between each pin and the ground shell (WM 49-12) as follows:

    From To Result
    P802-59 Ground Shell
    P802-60 Ground Shell
    P802-72 Ground Shell
    M1P1-A Ground Shell
    M1P1-B Ground Shell
    M1P1-C Ground Shell

    1. If the checks are not good, replace engine branched wiring-harness and do close out.
    2. If the checks are good, continue with next step.

  9. If the message SHORT-START CNTR/TIME TOT METER/WRG still shows on the CAIMS PMAT, perform a check for insulation resistance between the pins of counter meter connector (A108AP1) (WM 49-61). The resistance should measure as follows:

    From To Expected Result Result
    A108AP1-C1 A108AP1-D1 >1 megohm

    1. If the resistance is not as mentioned above, replace engine branched wiring-harness and do close out.
    2. If the resistance is as mentioned above, continue with next step.

  10. If the message SHORT-START CNTR/TIME TOT METER/WRG still shows on the CAIMS PMAT, perform a check for insulation resistance between each pin that follows and the ground shell (WM 49-61). The resistance should measure as follows:

    From To Expected Result Result
    J802-67 Ground Shell >1 megohm
    J802-68 Ground Shell >1 megohm
    J802-69 Ground Shell >1 megohm
    A108AP1-C1 Ground Shell >1 megohm
    A108AP1-D1 Ground Shell >1 megohm
    A108AP1-C11 Ground Shell >1 megohm

    1. If the resistance is not as mentioned above, replace engine branched wiring-harness and do close out.
    2. If the resistance is as mentioned above, continue with next step.

  11. If the message SHORT-START CNTR/TIME TOT METER/WRG still shows on the CAIMS PMAT, perform a check for insulation resistance between the pins of totalizing meter connector (A108AP1) (WM 49-61). The resistance should measure as follows:

    From To Expected Result Result
    A108AP1-B1 A108AP1-A2 >1 megohm

    1. If the resistance is not as mentioned above, replace engine branched wiring-harness and do close out.
    2. If the resistance is as mentioned above, continue with next step.

  12. If the message SHORT-START CNTR/TIME TOT METER/WRG still shows on the CAIMS PMAT, perform a check for insulation resistance between each pin that follows and the ground shell (WM 49-61). The resistance should measure as follows:

    From To Expected Result Result
    J802-59 Ground Shell >1 megohm
    J802-60 Ground Shell >1 megohm
    J802-72 Ground Shell >1 megohm
    A108AP1-B1 Ground Shell >1 megohm
    A108AP1-A2 Ground Shell >1 megohm
    A108AP1-A1 Ground Shell >1 megohm

    1. If the resistance is not as mentioned above, replace engine branched wiring-harness and do close out.
    2. If the resistance is as mentioned above, continue with next step.

  13. Replace FADEC.
  14. Do close out.

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