Perkins M190C - Page 150

150 KENR9126
Troubleshooting Section
•
0094-03 Fuel Pressure Sensor voltage above
normal
•
0094-04 Fuel Pressure Sensor voltage below
normal
•
0100-03 Engine Oil Pressure Sensor voltage
above normal
•
0100-04 Engine Oil Pressure Sensor voltage
below norma
l
•
0100-10 Engine Oil Pressure Sensor abnormal
rate of chan
ge
•
1785-03 Intake Manifold Pressure Sensor
voltage ab
ove normal
•
1785-04 Intake Manifold Pressure Sensor
voltage be
low normal
•
1785-10 Intake Manifold Pressure Sensor
abnormal
rate of change
•
0127-03 Transmission Oil Pressure Sensor
voltage a
bove normal
•
0127-04 Transmission Oil Pressure Sensor
voltage
below normal
•
1797-03 Fuel Rail Pressure Sensor voltage
above no
rmal
•
1797-04 Fuel Rail Pressure Sensor voltage
below n
ormal
Expected Result:
One or more of the preceding diagnostic codes are
active.
Results:
•
OK – P
roceed to Test Step 2.
•
Not OK
Repair: Do not use this procedure if 1785-10
or 100-10 diagnostic codes are active. Refer to
Tro
ubleshooting, “5 Volt Sensor Supply Circuit -
Test”. When this test is complete, return to the start
of this test.
If the preceding codes are logged, an intermittent
condition may be causing the logged codes.
Re
fer to Troubleshooting, “Electrical Connectors
- Inspect”.
Pe
rform a “Wiggle Test” by using the electronic
service tool in order to identify intermittent
connections.
STOP.
Test Step 2. Inspect Electrical Connectors
And Wiring
A. Thoroughly inspect the terminal connections on
the P2/J2 ECM sensor connectors.
B. Thoroughly inspect the following engine pressure
sensor connectors:
•
A-C5 Engine Oil Pressure Sensor
•
A-C6 Fuel Ra
il Pressure Sensor
•
A-C7 Intake Manifold Pressure Sensor
•
A-C14 Fuel Pressure Sensor
•
A-C18 Tran
smission Oil Pressure Sensor
C. Refer to Troubleshooting, “Electrical Connectors
- Inspect”
.
D. Perform a 45 N (10 lb) pull test on each of the
wires in t
he ECM connector and the sensor
connectors that are associated with the active
diagnostic code.
E. Check the screw for the ECM connector for the
correct torque of 5 N·m (44 lb in).
F. Check the harness for abrasions and for pinch
points from the sensors back to the ECM.
G. Use the electronic service tool to perform a
“Wiggle Test”. The “Wiggle Test” will identify
inter
mittent connections.
Expected Result:
All connectors, pins, and sockets should be
completely coupled and inserted. The harness should
be fr
ee of corrosion, abrasions, and pinch points.
Results:
•
OK – Proceed t o Test Step 3.
•
Not O
K
Repair: Repair the connectors or the harness
and
/or replace the connectors or the harness.
Ensure that all of the seals are correctly in place
and ensure that the connectors are completely
co
upled.
Use the electronic service tool in order to clear all
lo
gged diagnostic codes and then verify that the
repair eliminates the fault.
ST
OP.