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  • P1287 VP44 Injection Pump Controller Supply Voltage Low

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    Mopar1973Man

    DTC P1287: FUEL INJECTION PUMP CONTROLLER SUPPLY VOLTAGE LOW

    Monitor & Set Conditions

    Fuel injection pump controller supply voltage is monitored when ignition is on. DTC may be stored if low voltage exists.

    Possible Causes

    • Charging System Not Operating Properly

    Testing

    Check that charging system is operating properly. If charging system operates properly, test is complete. If charging system does not operate properly, perform CHARGING SYSTEM test under MISCELLANEOUS CONTROLS in SYSTEM & COMPONENT TESTING - RAM PICKUP - DIESEL article.


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