Perkins 1106D Troubleshooting Manual page 105

KENR6201-01
Expected Result:
The diagnostic code is not active when all of the
sensors are disconnected.
Results:
•
OK – The diagnostic code is not active when all of
the sensors are disconnected.
Repair: Reconnect all of the sensors except the
suspect sensor.
Proceed to Test Step 4.
•
Not OK – The diagnostic code is still active.
Repair: Leave all of the sensors disconnected.
Proceed to Test Step 5.
Test Step 4. Install a New Sensor
A. Remove the suspect sensor and connect
a replacement sensor. Do not install the
replacement sensor to the engine.
B. Use the electronic service tool in order to monitor
the diagnostic codes.
Expected Result:
The diagnostic code is not active.
Results:
• OK – The diagnostic code is not active.
Repair: Install the replacement sensor on the
engine. Use the electronic service tool in order to
clear all logged diagnostic codes. Replace all wires
to the original configuration.
Verify that the repair eliminates the fault.
STOP.
•
Not OK – The diagnostic code is still active.
Repair: Do not use the new sensor. Repair
the connectors or the wiring and/or replace the
connectors or the wiring. Refer to Troubleshooting,
"Electrical Connectors - Inspect".
Verify that the repair eliminates the fault.
STOP.
Test Step 5. Disconnect the ECM
Connector and Check for Active
Diagnostic Codes
A. Turn the keyswitch to the OFF position.
This document is printed from SPI². Not for RESALE
B. Connect the electronic service tool to the
diagnostic connector.
C. Check the ECM connectors for corrosion and
moisture.
D. Disconnect the P2 ECM connector from the ECM.
E. Reconnect the P1 connector to the ECM.
F. Turn the keyswitch to the ON position.
G. Check for active diagnostic codes on the electronic
service tool.
Note: A "voltage high" diagnostic code (open circuit)
should be active for all of the following sensors:
•
Engine pressure sensors
•
Engine temperature sensors
Expected Result:
The diagnostic codes are not active. A "voltage high"
diagnostic code (open circuit) is active for all of the
engine pressure sensors and temperature sensors.
Results:
•
OK – The diagnostic code is not active. Proceed
to Test Step 6.
•
Not OK – The diagnostic codes are still active.
Repair: Perform the following repair:
1. Make sure that the latest flash file for the
application is installed in the ECM. Refer to
Troubleshooting, "Flash Programming".
2. Contact Perkins Global Technical Support.
Note: This consultation can greatly reduce the repair
time.
3. If Perkins Global Technical Support
recommends the use of a test ECM, install a
test ECM. Refer to Troubleshooting, "Replacing
the ECM".
4. Use the electronic service tool to recheck the
system for active diagnostic codes.
5. If the fault is resolved with the test ECM,
reconnect the suspect ECM.
6. If the fault returns with the suspect ECM,
replace the ECM.
105
Troubleshooting Section