How to Solve AGCO Machine SPN100 FMI 01 Oil Pressure Low Alarm

This instruction show you guide on how to solve AGCO machine SPN100 FMI 10 oil pressure low alarm,the measured oil pressure is below the alarm limit.

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Failure Mode Indicator

FMI 01 – Below normal operational range – most severe.

 

Failure Mode

Fault code is stored and oil pressure warning lamp is activated. The engine will stop after 30 seconds. CAN message indicates, that shutdown is pending.

 

Possible Cause

• Engine oil level is too low
• Oil quality is poor
• Oil filter is clogged
• Oil grade is not correct
• Oil is too hot
• Oil is diluted by fuel
• Bearings have excessive clearance
• Oil pressure control valve is not operating correctly
• Oil pump has excessive wearing
• Idling speed is low
• OIl pressure sensor wiring is defective
• Oil pressure sensor is defective
• Control unit is defective

 

Diagnosis and Solution

Find the cause for the low oil pressure indication.

Check and repair the possible mechanical problems according to the service instructions:

• Check the oil level and condition of oil.
• Check the oil filter.
• Check mechanical condition of the engine.
• Check the idling speed.

To check the electrical defects, check the oil pressure sensor, the sensor wiring and the controller input:

• Check the oil pressure sensor wiring, connectors and contact surfaces of the connector pins (possible oxidation).

 

Oil Pressure Sensor

• Check the oil pressure sensor operation.

 

Oil Pressure Sensor

• Check the ECU operation with another EEM3 controller If the system is functional and the fault is not active with the replacement ECU, then the original ECU is defective.

 

More AGCO machine repair case,please refer to AGCO Machine Repair