Perkins 1106D Troubleshooting Manual page 104

104
Troubleshooting Section
Illustration 18
Typical example of the oil pressure sensor
(1) Voltage Supply (Vs)
(2) Ground (GND)
(3) Signal (SIG)
Test Step 1. Check for Connector Damage
A. Turn the keyswitch to the OFF position.
B. Check the connectors and the harness for the
following problems:
• Damage
•
Abrasion
•
Corrosion
•
Incorrect attachment
C. Refer to Troubleshooting, "Electrical Connectors
- Inspect".
D. Check the wire connectors at the following
positions:
• ECM
•
Pressure sensors
The wire connectors are shown in table 36.
E. Check the screws for the ECM connectors for the
correct torque of 5.0 N·m (44 lb in).
Expected Result:
The connectors and the harness should be free of
the following faults: damage, abrasion, corrosion,
and incorrect attachment.
Results:
•
OK – Proceed to Test Step 2.
•
Not OK
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Repair: Repair the connectors or the harness
and/or replace the connectors or the harness.
Verify that the repair eliminates the fault.
STOP.
Test Step 2. Check for Active Diagnostic
Codes
A. Connect the electronic service tool to the
diagnostic connector.
B. Turn the keyswitch to the ON position.
g01173226
C. Use the electronic service tool in order to monitor
the diagnostic codes. Check and record any active
diagnostic codes.
Note: Wait at least 15 seconds in order for the
diagnostic codes to become active.
Expected Result:
One of the following diagnostic codes is active:
•
262-3 5 Volt Sensor DC Power Supply voltage
above normal
•
262-4 5 Volt Sensor DC Power Supply voltage
below normal
Results:
•
OK – A 262-4 diagnostic code is active. Proceed
to Test Step 3.
•
OK – A 262-3 diagnostic code is active. Proceed
to Test Step 7.
•
Not OK – 262-4 and 262-3 diagnostic codes are
not active. Proceed to Test Step 4.
Test Step 3. Disconnect the Sensors
A. Turn the keyswitch to the ON position.
B. Use the electronic service tool in order to monitor
the diagnostic codes.
C. Disconnect the pressure sensors one at a time.
Wait for 30 seconds after each of the sensors is
disconnected.
Note: The diagnostic code will become inactive
when the sensor that caused the diagnostic code is
disconnected.
D. Ensure that all the pressure sensors are
disconnected.
KENR6201-01