Blue Bird Coachworks 450 LXi, Руководство пользователя

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450 LXi Owner Manual 5-1 Engine Operation
Rev. “C”
~ 5-1-21 ~
5-1.9 Diagnostic Flash Code Retrieval
5-1.9.1 “Diagnostic” Lamp
Use the “DIAGNOSTIC” Lamp or a Caterpillar electronic service tool to determine the diagnostic fl ash code.
Use the following procedure to retrieve the diagnostic codes if the engine is equipped with a “DIAGNOSTIC” lamp:
Turn the cruise control ON/OFF switch to the OFF position.
Move the SET/RESUME switch to either position. Hold that position until the “YELLOW” lamp begins to fl ash.
The “YELLOW” lamp will fl ash in order to indicate a two digit fl ash code and the SET/RESUME switch may be released. The
sequence of fl ashes represents the system diagnostic message. Count the fi rst sequence of fl ashes in order to determine the
fi rst digit of the diagnostic code. After a two second pause, the second sequence of fl ashes will identify the second digit of
the diagnostic code.
Any additional diagnostic codes will follow after a pause. The additional diagnostic codes will be displayed in the same
manner. Flash Code 55 signals that No Detected Faults have occurred since the ignition key switch has been turned to the
ON position.
The electronic diagnostic codes are listed and described in the following Diagnostic Flash Code Chart Table.
Some codes record events or some codes indicate that a mechanical system needs attention rather than indicating a
performance problem. Troubleshooting is not required for codes “35”, “41”, “47” and “55”. Code “01” will not fl ash. Some
codes will limit the operation or the performance of the engine.
The Diagnostic Flash Code Chart indicates the potential effect on the engine performance with active fl ash codes. This table
also forms a list of Electronic diagnostic codes and descriptions.
1.
2.
Diagnostic Flash Code or Engine Performance Relationship
Diagnostic Flash Code
Effect on Engine Performance
(1)
Suggested Acton of the Operator
Engine
Misfi re
Low
Power
Reduced
Engine
Speed
Engine
Shutdown
Shut
Down the
Engine
(2)
Service
(3)
Schedule
for Service
ASAP
(4)
01 Idle Shutdown Override
12 Coolant Level Sensor Fault
(5)
X
13 Fuel Temperature Sensor Fault X
14 Retarder Solenoid Fault X
21 Sensor Supply Voltage Fault
(5)(6)
X X
24 Oil Pressure Sensor Fault
(5)
X
25 Boost Pressure Sensor Fault
(6)
X X
26 Barametric Pressure Sensor Fault
(6)
X
27 Coolant Temperature Sensor Fault
(5)(6)
X
28 Accelerator Pedal Position Out of Calibration X
29 PTO Throttle Position Sensor Fault X X
31 Loss of Wheel-Based Vehicle Speed Signal X X
32 Accelerator Pedal Position Invalid X X
34 Engine RPM Signal Fault X X X X
35 Engine Overspeed Warning
36 Wheel-Based Vehicle Speed Signal Fault X X
38 Intake ManifoldAir Temperature Sensor Fault
(5)(6)
X
NOTE: Diagnostic Flash Code Chart indicates the potential effect on engine performance with “ACTIVE” fl ash codes.