Here is the instruction show you guide on how to solve JCB JS140 machine trouble codes C101F-12 fuel level sensor short circuit to battery (For JS140 Side Mounted FLS).
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2017 JCB Parts Plus+ and Repair Service Manual
Possible Cause:
1 Faulty fuel sensor.
2 Faulty Wire harness.
3 Faulty Display ECU.
Diagnosis:
1 Check the resistance output of fuel sensor between machine grounds & Pin no “B” of fuel sensor. Fuel sensor output shall be between 12Ω – 100Ω Refer below photograph for fuel sensor connection.
2 Check the voltage on wire no. 8028 after disconnecting DECU & Fuel sensor. 24 V shall not be measured on wire no. 8028.If 24V measured on wire no. 8028 then wire got short circuited to machine supply voltage.
Follow the electrical circuit 336/F3635 for fuel sensor connection.
Corrective Action:
1 Replace the fuel sensor.
2 Replace the Faulty wire harness.
3 Replace the faulty display ECU.
