Clarke C18H - TROUBLE SHOOTING; DIAGNOSTIC TROUBLE CODES

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position. Advise the appropriate personnel the
engine has been returned to “Automatic”.
5.0 TROUBLE SHOOTING
General Troubleshooting Information
Troubleshooting engine problems can be difficult.
The engine control unit (ECM) can detect problems
internally and in the electronic control system. This
includes determining if any of the sensor input
voltages are too high or too low, if the camshaft and
crankshaft position sensor inputs are valid, and if the
unit injector solenoids are responding properly.
If the ECM detects a problem with the electronic
control system a diagnostic trouble code (DTC)
specific to the failed system will be stored in the
ECM’s memory.
5.1 DIAGNOSTIC TROUBLE CODES (DTC’s)
There are two types of DTC’s
 Active
 Inactive (stored)
Active DTCs indicate that the failure is occurring.
These failures can be accessed on the diagnostic
gauge (A) on the instrument panel.
Inactive DTCs indicate that a failure has occurred in
the past, but is not currently occurring. This type of
“stored” DTC can be caused by an “intermittent”
failure. These could be problems such as a bad
connection or a wire intermittently shorting out.
If a sensor or wiring fails and a DTC is active for the
sensor, the ECM will use a substitute “default” value
in its calculation to maintain NFPA 20-required
performance.
Stored and active diagnostic trouble codes
are output on the PowerView Gauge
according to the J1939 standard as a two-
part code as shown on the table on the
following pages.
The first part is a Suspect Parameter Number
(SPN) followed by a Failure Mode Identifier
(FMI) code. To determine the exact failure,
both (SPN and FMI) of the code are needed.
The SPN identifies the system or the
component that has the failure.
The FMI identifies the type of failure that has
occurred; for example, FMI03 indicates value
above normal. Combining the SPN 000110
with FMI 03 yields engine coolant temperature
input voltage too high.
Always contact your Clarke service dealer for
help in correcting diagnostic trouble codes
which are displayed for your engine.
Listing of Diagnostic Trouble Codes (DTCs)
The Diagnostic Trouble Codes (DTCs) are output on
the diagnostic gauge according to J1939 standard as a
two-part code.
Following is a list of SPN’s, FMI’s and a description
of the diagnostic trouble codes that can occur in the
various engine systems.
When trouble codes appear on the PowerView
diagnostic gauge, see your engine dealer for repairs
as soon as possible.
Listing of Diagnostic Trouble Codes
SPN
FMI
Description
28
03
Throttle #3 Input High
28
04
Throttle #3 Input Lo
w
29
03
Throttle #2 Input High
29
04
Throttle #2 Input Low
91
03
Throttle #1 Input High
91
04
Throttle #1 Input Low
91
08
PWM Throttle Abnormal Pulse Width
91
14
Throttle Voltage Out of Range
94
01
Fuel Supply Pressure Extremely Low
94 03 Fuel Supply Pressure Input Voltage
High
94 04 Fuel Supply Pressure Input Voltage
Low
94 16/31 Fuel Supply Pressure Moderately
High
94
18
Fuel Supply Pressure Moderately Low
97 00 Water in Fuel – Continuously
Detected
97
03
Water in Fuel Signal
–
Voltage High
97
04
Water in Fuel Signal
–
Voltage Low
97
16
Water in Fuel Detected
100
01
Engine Oil Pressure Extremely Low
100 03 Engine Oil Pressure Input Voltage
High
100 04 Engine Oil Pressure Input Voltage
Low
100
18
Engine Oil Pressure Moderately Low
102 03 Manifold Air Pressure Input Voltage
High
102 04 Manifold Air Temperature Input
Voltage Low
105 03 Manifold Air Temperature Input
Voltage High
105 04 Manifold Air Temperature Input
Voltage Low