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<\/p>\nThis is a instruction show you guide on how to repair AGCO POWER EEM4 Engine K0387 & K0284, internal 12V supply voltage above\/below normal trouble.<\/p>\n
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SPN 1043, FMI 3, Internal 12V Supply Voltage Above Normal
\nThe EEM4 monitoring system has detected an internal failure.<\/p>\n
Possible causes are:<\/strong> Reaction in EEM<\/strong> Solution<\/strong> SPN 1043, FMI 4, Internal 12V Supply Voltage Below Normal Possible causes are:<\/strong> Reaction in EEM<\/strong> Solution<\/strong> First save the error log and then erase it. Restart the ECU after erasing the error log. If the fault occurs again during the next driving cycle, check the following path:<\/p>\n Check the ECU operation with another EEM4 controller. If the system is functional and the fault is not active with the replacement ECU, then the original ECU is defective.<\/p>\n
\nAn alternator failure.
\nAn ECU hardware defect.<\/p>\n
\nThe FC is stored and the warning lamp is activated. The CAN message indicates active fault.<\/p>\n
\nVerify and measure that the 12V supply voltage is in limits.
\nFirst save the error log and then erase it. Restart the ECU after erasing the error log. If the fault occurs again during the next driving cycle, check the following path:
\nCheck the ECU operation with another EEM4 controller. If the system is functional and the fault is not active with the replacement ECU, then the original ECU is defective.<\/p>\n
\nThe EEM4 monitoring system has detected an internal failure.<\/p>\n
\nAn alternator failure.
\nLow battery voltage.
\nAn ECU hardware defect.<\/p>\n
\nThe FC is stored and the warning lamp is activated. The CAN message indicates active fault.<\/p>\n
\nVerify and measure that the 12V supply voltage is in limits.<\/p>\n