CYLINDER GP-STICK 3741855 - Caterpillar

Illustration 9 g00888555
ECM connector P1
(P1-2) 5 volt supply for the analog sensors
(P1-18) 5 volt supply for the "DESIRED SPEED" potentiometer
Use a 151-6320 Wire Removal Tool to remove terminals P1-2 and P1-18.
Switch the 16 amp circuit breaker ON. Set the engine control to the STOP mode.
Use Cat ET to look for diagnostic codes. Expected Result:No active codesResults:
No codes - The 262-03 code or the 262-04 code is not active. Disconnecting all of the 5 volt wiring from the ECM eliminated the active "5 Volt Sensor Supply" diagnostic code. There is a problem with a connector and/or the wiring in a harness. Proceed to Test Step 6.
Active code - The 262-03 code or the 262-04 code is active. Disconnecting all of the 5 volt wiring from the ECM did not eliminate the +5 V diagnostic code. There may be a problem with the ECM.Repair: It is unlikely that the ECM has failed. Exit this procedure and perform this procedure again. If the problem is not resolved, perform the following steps:Temporarily install a new ECM. Refer to Troubleshooting, "Replacing the ECM".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, "Replacing the ECM".STOPTest Step 6. Connect the 5 Volt Wiring for the Analog Speed Circuit to the ECM
Set the engine control to the OFF/RESET mode. Switch the 16 amp circuit breaker OFF.
Insert terminal 18 into the P1 connector. Pull on the wire in order to verify that the terminal is fully inserted into the connector.
Rotate the "DESIRED SPEED" potentiometer clockwise to the maximum speed position.
Switch the 16 amp circuit breaker ON. Set the engine control to the STOP mode.
Use Cat ET to look for diagnostic codes. Expected Result:No active codesResults:
No codes - The 262-03 code or the 262-04 code is not active. Connecting the wiring for the analog speed circuit to the ECM did not cause a diagnostic code. The wiring for the analog speed circuit appears to be OK. Proceed to Test Step 7.
Active codes - The 262-03 code or the 262-04 code is active. Connecting the wiring for the analog speed circuit to the ECM caused a diagnostic code. Proceed to Test Step 4.Test Step 7. Connect the 5 Volt Wiring for the Sensors to the ECM
Set the engine control to the OFF/RESET mode. Switch the 16 amp circuit breaker OFF.
Insert terminal 2 into the P1 connector. Pull on the wire in order to verify that the terminal is fully inserted into the connector.
Switch the 16 amp circuit breaker ON. Set the engine control to the STOP mode.
Use Cat ET to look for diagnostic codes. Expected Result:No active codesResults:
No codes - The 262-03 code or the 262-04 code is not active. Connecting the 5 VDC for the sensors did not cause a diagnostic code. The problem appears to be resolved.Repair: The initial diagnostic code was probably caused by a