162
163
164
• There is now a new test incorporated into
the WDS.
• This test allows the technician to disable one
injector at a time and monitor pids to identify
weak injectors.
• While disabling injectors watch the Mfdes
pid. The injector(s) that have the least effect
on Mfdes while being disabled could be the
weak injector.
• When diagnosing a power or ground issue
be aware that there is a 12 way connector
that feeds power and/or ground to the
following components.
• FICM
• IPR
• EGR
• The 12 way connector is located in the rear
left hand corner of the engine compartment.
• If you have no (0 psi) ICP pressure during
crank it could be the result of: major high
pressure oil leak, lack of oil supply to the
high pressure pump, bad high pressure
pump, or the gear on the high pressure
pump is loose. Use PC/ED ICP diagnostics
to determine root cause.
• If ICP during crank is between 200-300 psi
and does not change as IPR duty cycle
increases, the IPR valve may not be
receiving V-power or a ground signal from
the PCM. If V-power and PCM signal are
present then the IPR may be at fault. Use
PC/ED IPR Diagnostics to determine root
cause.
Injector I/O Test
Power or Ground Issues
ICP Pressure Low During Crank
G E N E R A L D I A G N O S T I C S
80
IPR
IPR
12 WAY CONNECTOR
12 WAY CONNECTOR
Summary of Contents for 6.0L POWER STROKE
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Page 6: ...1 Direct Injection Turbocharged Diesel Engine 6 0L Power Stroke ...
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Page 94: ...W I R I N G D I A G R A M D U A L A LT 93 ...
Page 104: ...N O T E S 103 ...
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Page 106: ...2002 International Truck and Engine Corporation Printed in the U S A ...