Hyster J40XMT:
code -93 help

machine worked fine then next day get code -93 only pops up when driving but lift/tilt/ss do not operate. pump doesnt kick on. i can manually pick the pump contactor to run but does not operate on its own. any help would be amazing!
  • Posted 27 Dec 2024 07:52
  • Discussion started by Brandon_Kovacs
  • New York, United States
Showing items 1 - 1 of 1 results.
Brandon,

Status Code Description Memory Recall Circuit
-93 Power steering motor brushes are worn. No Traction and Pump
Symptom
Status code flashes on and off.
Possible Causes and Test Procedures
* Power steering motor brushes are worn.
A sensor has closed to battery positive.
Replace power steering motor brushes.
* P3 and/or P4 is shorted to battery positive.
Locate and repair short.
* A power steering motor brush wear sensor is shorted
or defective.
Locate and repair shorted sensor lead or replace
power steering motor brushes.
* Defective lift pump controller.
(SR transistor-controlled lift pump only.)
Replace lift pump controller.
* Defective sensor interface/contactor driver module.
(Contactor-controlled lift pump only.)
Replace sensor interface/contactor driver module.
NOTE: Status code 93 is only checked when a neutral
signal is present (open start switch or open forward
and reverse switches). The status code is then displayed when the controller is returned to the run mode.
Cause
This status code is displayed when the voltage
at terminal P3 and/or terminal P4 of the SR lift
pump controller or the sensor interface/contactor
driver module is at battery volts

Please verify model number. Serial number would help. Thanks.
  • Posted 30 Dec 2024 22:56
  • Reply by Fishmech
  • Virginia, United States
The hard to do we do right away. The impossible just takes a little longer.

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