COUPLER GP-QUICK 3109390 - Caterpillar

Table 1
Resistance Measurements for the Cat Data Link    
Connector and Terminal     Connector and Terminal    
P1-8     Terminal 19 on the GSC+    
P1-9     Terminal 20 on the GSC+    
P1-8     Ground strap for the ECM    
P1-9     Ground strap for the ECM    Expected Result:Each check of the resistance between the terminals is less than five Ohms.Each check of the resistance between a terminal and the ground strap is greater than 20,000 Ohms.Results:
OK - Each check of the resistance for the Cat Data Link is within the specification. The wiring for the Cat Data Link appears to be OK.Repair: Perform the following procedure:
Reconnect the wiring to the GSC+. Be sure to connect each wire to the appropriate terminal.
Reconnect the P1 connector. Proceed to Test Step 8.
Not OK - At least one check of the resistance for the Cat Data Link is incorrect. There is a problem with the wiring for the Cat Data Link.Repair: Repair the connection and/or the wire, when possible. Replace parts, if necessary. Verify that the original problem is resolved.STOPTest Step 8. Check the GSC+Verify that the GSC+ is operating correctly. Refer to the appropriate service literature for the EMCP II+.Expected Result:The GSC+ is operating correctly.Results:
OK - The GSC+ is operating correctly. Proceed to Test Step 13.
Not OK - The GSC+ is not operating correctly.Repair: Repair the GSC+. Refer to the appropriate service literature for the EMCP II+. Verify that the original problem is resolved.STOPTest Step 9. Check the "Fuel Quality" parameterVerify that the value of the "Fuel Quality" parameter is correct. Use the value that is obtained from the Caterpillar Software, LEKQ6378, "Methane Number Program".Expected Result:The value of the "Fuel Quality" parameter is correct.Results:
OK - The value of the "Fuel Quality" parameter is correct. Proceed to Test Step 10.
Not OK - The value of the "Fuel Quality" parameter is not correct.Repair: Enter the correct value for the parameter. Verify that the original problem is resolved.STOPTest Step 10. Check the Sensors for the Air Inlet Manifold
If the engine is running, stop the engine.
Connect a pressure gauge and a temperature sensor to the air inlet manifold.
View the Status Group 1 on Cat ET. Compare the values on the instruments with the following parameters:
"Inlet manifold air pressure (abs)"
"Inlet air temperature"Expected Result:The values of the parameters are correct.Results:
OK - The values of the parameters are correct. Proceed to Test Step 8.
Not OK - One or both of the values of the parameters are incorrect.Repair: Replace the appropriate sensor. Verify that the original problem is resolved.STOPTest Step 11. Check the GSC+Verify that the GSC+ is operating correctly. Refer to the appropriate service literature for the EMCP II+.Expected Result:The GSC+ is operating correctly.Results:
OK - The GSC+ is operating correctly. Proceed to Test Step 12.
Not OK - The GSC+ is not operating correctly.Repair: Repair the GSC+. Refer to the appropriate service literature for the EMCP II+. Verify that the original problem is resolved.STOPTest Step 12. Verify that the Output Power Reading is CorrectOperate the