Perkins 1106D Troubleshooting Manual page 147

SENR9982
Illustration 46
Fuel rail pressure sensor
(1) Voltage supply (Vs)
(2) Ground (GND)
(3) Signal (SIG)
Illustration 47
Intake manifold pressure sensor
(1) Voltage Supply (Vs)
(2) Ground (GND)
(3) Signal (SIG)
Illustration 48
Typical example of the oil pressure sensor
(1) Voltage Supply (Vs)
(2) Ground (GND)
(3) Signal (SIG)
The troubleshooting procedures for the diagnostic
codes of each pressure sensor are identical. The
pressure sensors are active sensors. The pressure
sensor has three terminals. Active sensors require
supply voltage from the ECM. The ECM connector
P2/J2 supplies +5 volts to terminal 1 of each
sensor. The common line is connected to each
sensor connector terminal 2. The signal voltage
from terminal 3 of each sensor is supplied to the
appropriate terminal at the ECM connector P2/J2.
Test Step 1. Verify All Active Diagnostic
Codes.
A. Turn the keyswitch to the ON position. Wait at
g01170309
least 10 seconds for activation of the diagnostic
codes.
B. Verify if any of the following diagnostic codes are
active:
• 100-03 Engine Oil Pressure open/short to +batt
•
100-04 Engine Oil Pressure short to ground
•
100-10 Engine Oil Pressure Sensor abnormal
rate of change
•
1785-03 Intake Manifold Pressure Sensor
voltage high
•
1785-04 Intake Manifold Pressure Sensor
voltage low
•
1785-10 Intake Manifold Pressure Signal
g01170310
abnormal rate of change
•
1797-03 Fuel Rail Pressure Sensor open/short
to +batt
•
1797-04 Fuel Rail Pressure Sensor short to
ground
Expected Result:
One or more of the preceding diagnostic codes are
active.
Results:
•
OK – Proceed to Test Step 2.
•
Not OK
Repair: Do not use this procedure if 1785-10
g01170311
or 100-10 diagnostic codes are active. Refer to
Troubleshooting, "5 volt Sensor Supply Circuit-
Test". When this test is complete, return to the start
of this test.
147
Troubleshooting Section