CYLINDER GP-TILT 2107101 - Caterpillar

Table 1
P1-34     Terminal G of the harness connector for the fuel metering valve    
P1-50     Terminal M of the harness connector for the fuel metering valve    Results:
OK - There is continuity between the terminals of the connectors. Proceed to Test Step 8.
Not OK - There is an open circuit between the terminals of the connectors.Repair: Perform the necessary repairs to the wiring and/or connectors. Replace parts, if necessary. Ensure that all of the seals are properly installed. Ensure that the connectors are properly engaged. Verify that the repair has eliminated the original problem.STOPTest Step 8. Check the Harness for a Short Circuit
Measure the resistance between the points that are listed in Table 2. Be sure to wiggle the wires in the harnesses as you make each resistance measurement.
Table 2
P1-34     All of the other terminals on the P1 connector    
Ground strap for the ECM
P1-50     All of the other terminals on the P1 connector    
Ground strap for the ECM Results:
OK - Each check of the resistance indicates an open circuit. The harness is not shorted. Proceed to Test Step 9.
Not OK - At least one check of the resistance indicates that there is continuity.Repair: There is a short circuit in a harness. There may be a problem with a connector. Repair the wiring and/or the connector. Replace part, if necessary. Restore the wiring to the original configuration. Verify that the problem is resolved.STOPTest Step 9. Determine if the ECM is the Problem
Remove electrical power from the ECM. Set the engine control to the OFF/RESET mode.
Temporarily install a new ECM.
Connect the fuel metering valve.
Restore electrical power to the ECM. Set the engine control to the STOP mode.
Check for proper operation.Results:
OK - The new ECM resolved the problem.Repair: If the problem is resolved with the new ECM, install the original ECM and verify that the problem returns. If the new ECM operates correctly and the original ECM does not operate correctly, replace the original ECM. Refer to Troubleshooting, "ECM - Replace"STOP
Not OK - The new ECM did not resolve the problem. Proceed to Test Step 10Test Step 10. Determine if the Fuel Metering Valve is the Problem
Remove electrical power from the ECM. Set the engine control to the OFF/RESET mode.
Temporarily install a new fuel metering valve.
Restore electrical power to the ECM. Set the engine control to the STOP mode.
Check for proper operation.Results:
OK - The new valve resolved the problem.Repair: Permanently install the new fuel metering valve. STOP
Not OK - The problem is not resolved.Repair: Retest the system.STOP