Spicer CTIS (Central Tire Inflation System) Troubleshooting Guide - Manual (Page 11)

8
Operator Instructions
Flange or Panel
RUN FLAT Flashing (with a Terrain Light)
RUN FLAT is selected, and tire pressures are checked at more
frequent intervals.
• If RUN FLAT is pushed to clear a "4 Mode Lights" fl ashing
display, imbalance and confi rmation fault detection is
overridden for the duration of RUN FLAT.
• Turn off by depressing RUN FLAT again or it will "time-out"
after 10 minutes.
Warning: RUN FLAT should not be used to infl ate tires with
substantial damage/defects. Use of RUN FLAT can result in other
tires on channel losing pressure.
No Terrain Lights
CTIS senses either a low system voltage or an electrical fault with a
Pneumatic Control Unit solenoid.
• System shuts off, closing wheel valves.
• Vehicle power is inadequate.
Flashing Warning Lamp and/or Buzzer or OVER SPEED Flashing
Vehicle speed is too fast for pressure selected.
• Reduce speed or select higher pressure by pressing
appropriate key.
• Continued operation in this mode will result in automatic
selection of more appropriate pressure setting.
• Warning lamp may fl ash while system is in EMERGENCY
mode.
Solid Warning Lamp or Solid OVER SPEED
ECU has seen 25-50 ignition cycles without seeing any speed
signal.
• If no problem exists with speed circuit wiring or sensor,
lamp will go off when vehicle is moved.
Lights Sequentially Flashing (one after another)
A confi guration error has occurred and the CTIS memory has been
"reloaded" from the system defaults.
• System reloads default confi guration values.
• Pressing HWY and RUN FLAT buttons together may clear
display.
• Any past changes of target pressure, etc. should be
updated.
Lamp on
Instrument
Panel
Lamp on
Instrument
Panel