MODEL 330 OPERATOR'S MANUAL - Peterbilt Motors Company

Operating Instructions
Self Test
When you turn on your ignition, the following warning lights
will turn on for 3 - 5 seconds, as a test to let you know they
are working.
Instruments and Controls
important system, such as the brakes, which could lead
to an accident. Have the appropriate system checked
immediately.
The buzzer will sound continuously as long as:
• Engine temperature is above the specified range
Diff Lock
Water Temp
Mirror Heat
Trailer ABS
Left Turn
Load Light
• Air pressure to the service brakes is low
• Engine oil pressure is low
• There is a problem in the hydraulic brake system
Brake Air (or Brake *)
Fifth Wheel
Oil Pressure
High Beam
Right Turn
Engine Fan
ABS Park *
* Vehicle with hydraulic brakes only
WARNING! Do not ignore a warning light or
buzzer. These signals tell you something is
wrong with your vehicle. It could be a failure in an
If the buzzer sounds while driving, or if a light comes on, do
the following:
1. Slow down carefully.
2. Move a safe distance off the road and stop.
3. Set the parking brake. (See Pages 65 and 72 for transmission
shifting and parking brake information.)
4. If the engine is overheating do not turn it off, see page
22; otherwise, for other conditions turn the engine OFF.
5. Turn on the emergency flasher and use other warning
devices to alert other motorists.
Model 330 PB1318 3/01 – 19 –