Table 151
Troubleshooting Test Steps
Values Results
1. Check the Coolant Level
A. Remove electrical power from the ECM.
B. Check the coolant level. Refer to the Operation and Maintenance
Manual for the correct procedure to check the coolant level.
Coolant level Result: The coolant level is low.
Repair: Add coolant according to the procedure in the
Operation and Maintenance Manual.
There may be a leak in the cooling system. Identify the
source of the coolant leak. Repair the leak. Refer to
Systems Operation/Testing and Adjusting, “Cooling
System” for additional information.
Result: The coolant is at the correct level.
For applications that have a “Coolant Level Sensor”
parameter, proceed to Test Step 2.
For applications that do not have a “Coolant Level
Sensor” parameter, proceed to Test Step 3.
2. Verify that the ““Coolant Level Sensor”” Parameter is Pro-
grammed Correctly
This Test Step is only applicable to applications that have a “Coolant
Level Sensor” parameter.
A. Connect the electronic service tool to the diagnostic connector.
B. Establish communication with the ECM.
C. Verify that the “Coolant Level Sensor” parameter is programmed
to “Installed” .
D. Remove electrical power from the ECM.
Parameter
programmed
Result: The “Coolant Level Sensor” parameter is not
programmed correctly.
Repair: Program the “Coolant Level Sensor” parame-
ter to “Installed” .
Verify that the repair eliminates the fault.
Result: The “Coolant Level Sensor” parameter is pro-
grammed correctly.
Proceed to Test Step 3.
(continued)
UENR4469-36 277
Circuit Tests
Copyright of Perkins Engine Company Limited. NOT FOR REPRINTING OR RESALE
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