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This is an illustration on how to solve Massey Ferguson 6700 tractor SPN 29, FMI 3, accelerator pedal 2 sensor above normal or open circuit (IDLE)
Preparations:
AGCO EDT 2024
AGCO 2×4 CANUSB
Description
The measured accelerator pedal sensor signal is above the normal operating range.
Possible causes are:
The sensor wiring is defective.
The accelerator pedal sensor power supply is not correct.
The sensor is defective.
Reaction in EEM
The FC is stored and the warning lamp is activated. The CAN message indicates active fault. The engine speed is reduced to low idle, if there is no other speed request available.
Solution
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 paths:
Check the accelerator pedal 2 sensor wiring, the connectors and the contact surfaces of the connector pins (possible oxidation).
Check the 5 V power supply to the sensor.
Check the operation with another accelerator pedal sensor to see if the accelerator pedal sensor is defective.
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