TM 9-2320-366-10-1
2-3. CENTER CONSOLE CONTROLS AND INDICATORS (CONT)
c. Central Tire Inflation System (CTIS) Electronic Control Unit (ECU). Figure 2-10
shows all CTIS controls and indicators on the center console.
Figure 2-10. Central Tire Inflation System (CTIS) Electronic Control Unit
(ECU) Controls and Indicators
1. HWY (Highway) Mode Button and Indicator. Pressed to set CTIS in highway
mode. Indicator illuminates steady when tire pressure is 60 psi (414 kPa) (81 psi
(558 kPa) for the M1088 and M1089). Maximum speed is 55 mph (88 km/h) in
HWY mode.
2. X-C (Cross-Country) Mode Button and Indicator. Pressed to set CTIS in cross-
country mode. Indicator illuminates steady when tire pressure is 37 psi (255 kPa)
(54 psi (372 kPa) for the M1088 and M1089). Maximum speed is 40 mph (64
km/h) in X-C mode.
3. SAND (Soft Terrain) Mode Button and Indicator. Pressed to set CTIS in soft
terrain mode. Indicator illuminates steady when tire pressure is 22 psi (152 kPa)
(32 psi (221 kPa) for the M1088 and M1089). Maximum speed is 12 mph (19
km/h) in SAND mode.
4. EMER (Emergency) Mode Button and Indicator.
Pressed to set CTIS in
emergency mode. Indicator illuminates steady when tire pressure is 16 psi (110
kPa) (24 psi (165 kPa) for the M1088 and M1089). Maximum speed is 5 mph (8
km/h) in EMER mode.
5. RUN FLAT Mode Button and Indicator. Mode used to maintain tire air pressure
in the event of a leak.
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