Table of Contents
Advertisement
H A R D S TA R T / N O S TA R T D I A G N O S T I C S
F-Series/Excursion Powerstroke 2003.25
6.0L Power Stroke Diesel Engine Diagnostic Guide
Customer Concerns (Please list in this box)
DEALER NAME
ENGINE SERIAL NUMBER
VEHICLE GVW
TRANSMISSION
NOTE: A hard start/ No start concern with EOT
Temp. below 60F perform step 10 first.
1. Visual Engine/Chassis Inspection
Fuel Oil Coolant Electrical Hoses Leaks
Method
Visual
2. Check Engine Oil Level
Check for contaminants (fuel, coolant).
•
Correct Grade/Viscosity.
•
•
Miles/Hours on oil ,correct level.
Method
Visual
3. Intake/Exhaust Restriction
Inspect air filter and inlet ducts.
•
•
Inspect exhaust system.
•
Check if air filter minder indicator has been illuminated
Method
Visual
4. Sufficient Clean Fuel
•
Check if the WATER IN FUEL lamp has been
illuminated.
After verifying that there is fuel in the tank, drain a
•
sample from fuel control module.
Cetane rating between 40-50 is recommended for
•
optimum start.
Method
Visual
5. Electric Fuel Pump Pressure
Verify that the fuel pump has voltage and gnd. At key on.
•
Measure fuel pressure at engine fuel filter housing test
•
port with a (0-160 PSI) gauge at key on.
Fuel pump runs for 20 sec. at key on and pressure
falls after key off.
Instrument
Spec.
0-160 PSI
45 PSI min.
Gauge
If pressure fails low go to next step to verify no restriction
6. Electric Fuel Pump Inlet Restriction
Measure restriction at fuel pump inlet.
•
Instrument
Spec.
0-30 " Hg
6" Hg MAX
vacuum
»
If > 6" Hg restriction, check lines between pump and fuel tank.
»
If < 6" Hg, inspect both fuel filters. If filters are OK, check fuel
regulator. If regulator and filters are OK, replace fuel pump.
88
IF CONCERN IS FOUND, SERVICE AS
REQUIRED. IF THIS CORRECTS THE
CONDITION, IT IS NOT NECESSARY TO
COMPLETE THE REMAINDER OF THE
P & A
CODE
7. Perform KOEO On-Demand Self Test
Use scan tool. DTC's set during this test are current faults
•
Diagnostic
Trouble Codes
8. Retrieve Continuous Trouble Codes
Check
•
Use the scan tool.
DTC's retrieved during this test are historical faults.
•
Diagnostic
Trouble Codes
9
. KOEO Injector Electrical Self Test (Click Test)
Use scan tool. Injector DTC's will be displayed at test end.
•
•
All injectors will momentarily click, then each injector will
Check
click in sequence 1-8. Sequence repeats three times.
Injector
Trouble Codes
»
If self test codes are retrieved, go to appropriate PPT test.
10. Scan Tool - Data List Monitoring
•
Scan tool may reset below 9.5 volts.
•
Select the parameters indicated from the scan tool
Check
parameter list and monitor while cranking engine.
Parameter
V PWR
FICMLPWR
FICMVPWR
ICP volts
Check
FUEL PW
FICMSYNC
A - V PWR - If low voltage condition is present, check battery,
charging system, or power/gnd circuits to the PCM.
B - FICMLPWR - No/low voltage indicated could be caused
by 12-way connector issue or logic power fuse.
Refer to Pinpoint S for detailed 12-way conn. diagnostics
C - FICMVPWR - No or low voltage indicated could be caused
by 12-way connector issues.
D - RPM - Low RPM can be caused by starting/charging
Measurement
system issues. No RPM indicated while cranking could be
CMP or CKP faults.
E - ICP - A minimum of 500 PSI (3.5 mPa) is required for
the injectors to be enabled. No or low oil in the system,
system leakage, injector O-Rings, faulty IPR, or high
Measurement
pressure pump could cause low pressure.
IPR duty cycle defaults to 14 % (300 PSI) w/o CKP signal.
F - ICP V - Voltage reading below spec indicates low ICP
during crank.
G - FUEL PW - Pulse width defaults to 0 w/o CKP signal
H - FICMSYNC- No sync could be caused CMP or CKP faults.
»
Refer to PC/ED section 4 for detailed test procedures.
-NOTE-
DIAGNOSTIC PROCEDURE.
1863 CLAIM NUMBER
ODOMETER
AMBIENT TEMPERATURE
Spec.
Measurement
8 volt min.
RPM
100 RPM
minimum
ICP
3.5 mPa min.
(500 PSI)
.80 V min.
500 uS - 2 mS
Yes/No
CUSTOMER NAME
MODEL YEAR
VEHICLE SERIAL N0.(VIN)
CHASSIS STYLE
DATE
PERSONAL
11. Glow Plug System Operation
GPCM Operation
Glow Plug ON time is dependent on oil temperature
•
and altitude. The Glow Plug Control Module (GPCM)
comes on between 1 and 120 sec., and does not come
on at all if oil temp is above 131 F.
Using a scan tool , check Continuous and KOEO DTC's.
•
If codes are present go to Pinpoint Test AF.
Verify B+ voltage is being supplied to GPCM.
•
Using the scan tool GPCTM and EOT pids, verify
•
glow plug "on" time .
•
Turn key to run position, measure voltage ("on"time)
(Dependent on oil temperature and altitude)
Relay on time
1 to 120
seconds
Wait to Start Lamp "on" time is independent from g/p "on" time
Glow Plug Resistance
•
Disconnect the 4-pin connector at front of valve cover
Measure each Glow Plug resistance to Bat. ground.
•
•
Measure engine harness resistance to GPCM
Glow
Glow Plug
Plug
to Ground
Number
.1 to 2 ohms
#1
#3
#5
#7
#2
#4
#6
#8
140
120
100
80
60
40
20
0
0
20
40
Add 5 seconds to glow plug on time when above
•
7000 feet in altitude, but not to exceed 120 seconds.
TYPE OF SERVICE
COMMERCIAL
Spec.
Measurement
B +
Harness to
GPCM connector
0 to 1 ohms
60
80
100
120
140
EOT (°F)
Advertisement
Table of Contents
