SECTION 5 - JLG CONTROL SYSTEM
3121166 – JLG Lift – 5-15
3 2 CONTACTOR DRIVER PERMANENTLY ON The Power Module’s Line Contactor Drive Circuitry failed
to de-energize during power-up self-tests.
The Power Module is reporting a “Contactor Driver 1 Per-
manently On” Fault Code (23d). Refer to CANbus docu-
mentation for Power Module Message – Status.
Drive, Steer, & Lift Up Prevented.
Refer to CANbus documenta-
tion for Power Module Mes-
sage - Status.
Help messages with the 3-3 flash code indicate an output driver problem.
NOTE: Certain output driver problems cannot be detected because stimulation of the load could result in safety con-
cerns or annoyance (brake open circuit, lift down open circuit, ground alarm open circuit). 3-3 help messages
shall be latched until the next power cycle.
3 3 BRAKE SHORT TO BATTERY Voltage was detected on the brake solenoid when the out-
put driver was commanded off during power-up.
Brake INPUT driven Low AND Brake STAT detected Low
during power-up.
Drive, Steer, & Lift Prevented.
3 3 BRAKE OPEN CIRCUIT Current flow to the brake solenoid was not detected during
normal brake operation.
Brake INPUT driven High (normal operation) AND
Brake
STAT detected Low.
Drive & Steer Prevented
3 3 LIFT UP SHORT TO BATTERY Voltage was detected on the lift up solenoid when the out-
put driver was commanded off during power-up.
Lift Up INPUT driven Low AND
Lift Up STAT detected Low
during power-up.
Drive, Steer, & Lift Up Prevented.
3 3 LIFT UP OPEN CIRCUIT Current flow to the lift up solenoid was not detected during
power-up.
Lift Up INPUT driven High (momentarily) AND Lift Up STAT
detected Low during power-up.
No motion interlocks.
3 3 LIFT DN SH ORT TO BATTERY Vol tage was dete cted on the lift down sol enoid when the
output driver was commanded off during power-up.
Lift Down INPUT driven Low AND
Lift Down STAT detected
Low during power-up.
No motion interlocks.
3 3 LIFT DN OPEN CIRCUIT Current flow to the lift down solenoid was not detected dur-
ing normal lift down motion.
Lift Down INPUT driven High (normal operation) AND
Lift
Down STAT detected Low.
Lift Up Prevented.
3 3 STEER LEFT SHORT TO BATTERY Voltage was detected on the steer left solenoid when the
output driver was commanded off during power-up.
Left Turn INPUT driven Low AND Left Turn STAT detected
Low during power-up.
Drive & Steer Prevented.
3 3 STEER LEFT OPEN CIRCUIT Curr ent flow to th e steer left solenoid was not dete cted dur-
ing power-up.
Left Turn INPUT driven High (momentarily) AND
Left Turn
STAT detected Low during power-up.
Drive & Steer Prevented.
Table 5-2. Flash Code Listing
FLASH
CODE
HELP MESSAGE CAUSE POSSIBLE RESOLVE
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