TM-9-2320-272-10

TM 9-2320-272-10

2-202

The selector panel (1) is part of the Electronic Control Unit (ECU) (4) and

contains selectors for the four preset tire pressure modes and a run flat selector.

Each selector has its own light. A steady selector light shows that the tire pressure

selected has been achieved. A flashing selector light means that the system is

working to change tire pressures (para. 3-5).

HWY Mode.

The highway tire pressure selector is the normal operating

mode of CTIS. The HWY mode (8) is 60 psi (414 kPa) (80 psi (552kPa) for M936A2

wrecker). If a lower tire pressure mode had been selected the last time the vehicle

was operated, CTIS will automatically begin to inflate to the highway setting.

X-C Mode.

The cross-country tire pressure selector X/C (7) is used for

operating the vehicle on non-paved secondary roads and unimproved surfaces. It

allows operation up to 35 mph (56 km/h) (25 mph (40 km/h) on M936A2 wrecker).

When 35 mph (56 km/h) is exceeded for more than one minute, the amber overspeed

warning light (2) will flash. If 35 mph (56 km/h) is exceeded for more than two

minutes, CTIS will automatically begin to inflate to HWY (8) mode.

Sand Mode.

When the mission requires maximum traction in sand, snow, or

mud select SAND (6) on selector panel (1). It allows operation up to 20 mph (32

km/h) (15 mph (24 km/h) on M936A2 wrecker). When 20 mph (32 km/h) is exceeded

for more than one minute, the amber overspeed warning light (2) will flash. If

20 mph (32 km/h) is exceeded for more than two minutes, CTIS will automatically

begin to inflate to X/C (7) pressure.

2-31. CTIS OPERATION UNDER UNUSUAL CONDITIONS (Contd)

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