Page 60
45-J Desel - Servce & Parts Manual
January 2022
Secton 17 - Calbraton Problems
This message could also occur if the wrong pressure sensor was fitted (e.g.: a 5000psi sensor
when a 3000psi one is needed).
Check “CALIBRATIONS / HEIGHT CALS”; the “Height” indicates the first height at which there
was insufficient difference and the “Up” and “Down” values show the loaded pressure (first) and
the difference between loaded and empty pressure (second).
F42:LOW PRESSURE
This message indicates that the pressure is too low (0.50V or less) when the elevation switch
opens during the “DYNAMIC LIFT”.
This message would occur if the pressure sensor was disconnected, or if there were some other
wiring error.
Check DIAGNOSTICS / SENSORS to check the pressure.
F43:HIGH PRESSURE
This message indicates that the pressure is too high (4.50V or more) when the elevation switch
opens during the “DYNAMIC LIFT”.
This message would occur if the wrong pressure sensor was fitted, or if there were some other
wiring error.
Check DIAGNOSTICS / SENSORS to check the pressure.
F44:LOW PRESSURE
This message indicates that the pressure is too low (0.50V or less) at a STATIC measurement
point.
This message would occur if the pressure sensor was disconnected, or if there were some other
wiring error.
Check DIAGNOSTICS / SENSORS to check the pressure.
F45:HIGH PRESSURE
This message indicates that the pressure is too high (4.50V or more) at a STATIC measurement
point.
This message would occur if the wrong pressure sensor was fitted, or if there were some other
wiring error.
Check DIAGNOSTICS / SENSORS to check the pressure.
F46:CHECK ELEV
This message indicates that the elevation switch opened more than once during the “DYNAMIC
LIFT”.
F47:CHECK ELEV
This message indicates that the elevation switch closed more than once during the DYNAMIC
lower.
F48:BAD PRESSURE
This message is given if the pressure sensor output is out of range at the start of calibration.
The sensor output must be between 0.50V and 4.50V.
Check DIAGNOSTICS / SENSORS to see the output. A reading of 0.00V or 5.00V is probably
due to a wiring problem.
F49:TOO FEW
The minimum number of static calibration points was not achieved.
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