Holiday imperial 2001, Owner'S Manual, Page: 276 / 301

Chassis Information
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I M P E R I A L
1 0 • 2 7 6
4. The CHECK TRANS light comes on frequently.
The Importance of Proper Fluid Levels
The transmission fluid cools, lubricates and transmits hydraulic power. It
is important that the proper fluid level be maintained at all times. If the fluid
level is too low the converter and clutches do not receive an adequate supply
of fluid. If the fluid level is too high the fluid can aerate. Aerated fluid can
cause the transmission to shift erratically or overheat.
The MT Series oil level sensor (OLS) allows the operator to obtain an
indication of sensor fluid level from the keypad shift selector. Frequently
check for the presence of oil level diagnostics in the transmission. If the OLS
has not been detected, troubleshooting of the OLS circuit is required. This
will have to be performed by an Allison Service Center. After the OLS circuit
is repaired ensure that reset of the “auto-detect” or manual selection of the
OLS function, using the Pro-Link, has been accomplished.
Fluid Level Check with the Keypad
• Park the motorhome on a level surface, place the transmission in “N” and
set parking brake.
• The transmission should be at normal operating temperature.
• The motorhome should be stationary for approximately two minutes to
ensure fluid is stabilized.
• Simultaneously press the arrow up and arrow down buttons one time.
• The delayed fluid level check will display in the digital display window.
The display will be one character at a time. The “o,L” represents oil
level check mode. This will be followed with fluid level indication
readings. The “o,K” indicates a correct fluid level. Reading between
the OLS and the dipstick may not agree because the OLS compensates
for fluid temperatures. Abnormal indications of the OLS will be “Lo”
representing a low fluid level, “HI” for a high fluid level or “LO” for
invalid information and system problems. All indications will be fol-
lowed by numeric values. The “LO” and “HI” followed by the numer-
ic value represents the quarts of fluid required for the system. The
invalid code numbers represent specific symptoms
Common Oil Level Fault Codes:
• 0,5 settling time too short.
• 5,0 speed RPM too low.
• 5,9 speed RPM too high.
• 7,0 sump temperature too low
• 7,9 sump temperature too high
• 9,5 OLS FAILURE