TECHNICAL INFORMATION
Engine speed (rpm) too low
Engine speed (rpm) too high
Sump oil temperature too low
OL-79
Sump oil temperature too
high
Note: Failure to meet one of the above
parameters will stop the two minute countdown.
One of the codes shown below will indicate the
cause of the countdown interruption. Once all
parameters are met, the countdown will continue
from where it left off.
Exiting The Fluid Level Display Mode
To exit the Oil Level Display Mode, press any
range button ("R", "N" or "D").
CLEARING CODES
If the CHECK TRANS light is illuminated, first
clear all diagnostic codes by pressing both the
"
" (up arrow) and " " (down arrow)
pushbuttons at the same time, twice.
Take the vehicle for a test drive. If the CHECK
TRANS light illuminates again, record the
diagnostic codes. Refer to "World Transmission
(WT) Diagnostic Codes" in this chapter.
EATON TRANSMISSION
TROUBLESHOOTING GUIDE
The transmission is equipped with built in
diagnostic capabilities combined with a “Service”
indicator light, alerts the driver to potential
transmission problems. The indicator light on
the shift control pad remains off when the
transmission is functioning properly.
A flashing or steady “Service” light indicates the
transmission has registered a fault code. A
mechanic will use the fault codes to assist in
fixing the problem.
The transmission controller uses certain shift
strategies which, in many instances, lets the
transmission continue limited operation when a
problem is sensed. These “limp-home”
strategies allow the vehicle to operate under its
own power, therefore avoiding the need for
towing. Examples of this condition are:
• Transmission fails to engage in reverse,
however the vehicle is still able to go
forward;
• Transmission fails to upshift or downshift,
but the vehicle can still proceed although
speed and/or power is limited;
• Transmission is not able to engage all ratios.
Skip shifts when possible.
The driver should determine the remaining
capabilities of the coach before proceeding
Note: If the driver chooses to stop, the coach
may become disabled, and may require towing.
For some transmission errors, it may be possible
to “clear” or “reset” the controllers. To do this:
1. Stop the coach in a safe location;
2. Place the transmission in neutral;
3. Set the parking brake;
4. Turn off the engine/ignition;
5. Wait two minutes;
6. Restart the engine;
7. Resume operation.
If the reset steps do not allow the transmission
to perform properly, follow this flow chart:
07058
134
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