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tm1885 - 310G Backhoe Loader Service Codes Display Monitor (S.N. 910056-951253)
Service Codes Display Monitor (S.N. 910056-951253) The service code number is indicated by an F9 plus two other digits. The letter F means that a problem has occurred. The number 9 means the problem has been diagnosed by the display monitor indicating a problem with Transmission Oil Temperature Sender, Transmission Oil Filter Switch, Engine Air Filter Switch, Hydraulic Oil Filter Switch, Fuel Level Sender, Alternator, Hydraulic Temperature Sensor. The CHECK SERVICE CODE light will also be turned ON. The last two digits of service code number would indicate problems as follows: Symptom
Problem
Solution
(F920) Converter oil temperature sensor voltage less than 0.27 volts. Converter oil temperature display will show dashes in the display monitor window.
Converter Oil Temperature Sensor B6 Signal Wire Shorted to Ground, Failed Sensor
Check converter oil temperature sensor (B6). Display Monitor/Indicator Circuits (SE21) see System Functional Schematic (S.N. 910056-951253) . 910056-951253) . (Group 9015A-10)
Failed Display Monitor
Check display monitor. Display Monitor/Indicator Circuits (SE21) see System Functional Schematic (S.N. 910056-951253) . 910056-951253) . (Group 9015A-10)
(F925) Converter oil temperature sender voltage greater than 4.96 volts. Converter oil temperature display will show dashes in the display monitor window.
Converter Oil Temperature Sensor B6 Signal Wire Shorted to Battery, Signal Wire Shorted to 5 Volts, Signal Wire Open, Ground Wire Open, Failed Sensor
Check converter oil temperature sensor (B6). Display Monitor/Indicator Circuits (SE21) see System Functional Schematic (S.N. 910056-951253) . 910056-951253) . (Group 9015A-10)
(F927) Converter Oil Temperature “Severely” high greater than 205 °F and signal voltage greater than 0.28 volt. Transmission damage will occur after continued use.
Converter Oil Type Wrong
Check/replace.
Converter Oil Level Too High or Too Low
Check/adjust oil level.
Converter Oil Cooler
Check/repair Transmission Oil Cooler Air Flow Restriction.
Fuel Sender B8 Signal Wire Shorted to Ground, Failed Sender,
Check Fuel Sender (B8). Display Monitor and Indicator Circuits (SE21) see System Functional Schematic (S.N. 910056-951253) . 910056-951253) . (Group 9015A-10)
Failed Display Monitor
Check Display Monitor (B8). See Display Monitor and Indicator Circuits (SE21) see System Functional Schematic (S.N. 910056-951253) . 910056-951253) . (Group 9015A-10)
Fuel Sender B8 Signal Wire Shorted to Battery, Signal Wire Shorted to 5
Check Fuel Sender (B8). Display Monitor and Indicator Circuits (SE21)
(F960) Fuel level sender voltage low. Display monitor will not display fuel level.
(F965) Fuel level sender voltage high. Display monitor will not
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Volts, Signal Wire Open, Ground Wire Open, Failed Sender
see System Functional Schematic (S.N. 910056-951253) . (Group 9015A-10)
Failed Display Monitor
Check Display Monitor . Display Monitor and Indicator Circuits (SE21) see System Functional Schematic (S.N. 910056-951253) . (Group 9015A-10)
Wiring Failure
Check Wiring Diagram See Engine/Transmission Harness (W7) Wiring Diagram (S.N. 910056951253) . (Group 9015A-10)
Alternator Failure
Check Alternator (G2). Power, Charging, and Start Circuits (SE1) see System Functional Schematic (S.N. 910056-951253) . (Group 9015A-10)
(F990) Engine oil pressure switch.
Engine Oil Presssure Switch B7 Signal Wire Shorted to Ground, Wrong Oil Type, Failed Pump.
Check engine oil pressure switch (B7), Engine Control Unit (ECU) Circuit (SE20) see System Functional Schematic (S.N. 910056-951253) . (Group 9015A-10)
(F9C4) Display monitor not receiving messages from engine control unit.
M12 CAN bus wire shorted to R02 shield wire at connector.
Disassemble and clean CAN bus connectors (SE20). See System Functional Schematic (S.N. 910056951253) (Group 9015A-10) or see Engine/Transmission Harness (W7) Wiring Diagram (S.N. 910056951253) . (Group 9015A-10)
display fuel level.
(F974) Alternator voltage greater than 16.0 volts.
Observations when M12 wire is suspected: Diagnostic Trouble Code (DTC) F9A3 also active, cannot connect to Service ADVISOR™ readings, and engine derates or will not start.
(F9A3) Prohibits engine from overloading. Display monitor configuration does not match engine control unit configuration.
CAN Communication wires opened or grounded, R3 CAN Termination Resistor not connected, Failed engine control unit
Check wiring harness from engine control unit to display monitor. See Engine Control Unit (ECU) Circuit (SE20) in See System Functional Schematic (S.N. 910056-951253) (Group 9015A-10)
M12 CAN bus wire shorted to R02 shield wire at connector.
Disassemble and clean CAN bus connectors (SE20). See System Functional Schematic (S.N. 910056951253) (Group 9015A-10) or see Engine/Transmission Harness (W7) Wiring Diagram (S.N. 910056951253) . (Group 9015A-10)
Observations when M12 wire is suspected: Diagnostic Trouble Code (DTC) F9C4 also active, cannot connect to Service ADVISOR™ readings, and engine derates or will not start. Wrong Engine Control Unit on Machine.
Check engine control unit and Display Monitor configuration.
(F9AA)
Machine model does not match stored ECU security machine model.
Program the Display Monitor. See Program Display Monitor. (Group 9015-20)
(F9d5)
Display Monitor is not programed correctly.
Program the Display Monitor. See Program Display Monitor. (Group 9015-20)
(F985)
Display Monitor is not programed correctly.
Program the Display Monitor. See Program Display Monitor. (Group
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9015-20)
TX14826,000321F-19-01JUN06
