SENSOR GP-POSITION 2176566 - Caterpillar

Illustration 1 g01224070
Schematic of the parking brake solenoid valvesThis diagnostic code is associated with the parking brake solenoid (No.2). The FMI 06 means that the Power Train ECM has determined that the current of the solenoid is above normal. The possible causes of this diagnostic code are:
The energize circuit is shorted to ground.
The solenoid has failed.
The ECM has failed. This is unlikely. Note: The following test procedure may create other diagnostic codes. Ignore these created diagnostic codes and clear these diagnostic codes when the original diagnostic code has been corrected. Ensure that the diagnostic code of CID 1610 FMI 06 is active before performing this procedure.Note: Use the 146-4080 Digital Multimeter for the measurements in this procedure.System Response:When this diagnostic code is active, the ECM will be unable to control the parking brake solenoid. The parking brake will always be engaged.Test Step 1. CHECK THE SOLENOID
Turn the disconnect switch and the key start switch to the ON position. Do not start the engine.
Disconnect the machine harness from the No.2 parking brake solenoid.
At the machine harness connector for the No.2 solenoid, place a jumper wire from connector contact 1 (wire A958-WH) to connector contact 2 (wire T946-PU).Expected Result:The diagnostic code is not active.Results:
YES - The diagnostic code is not active. The solenoid has failed.Repair: Replace the solenoid.STOP
NO - The diagnostic code remains active. Proceed to Test Step 2.Test Step 2. CHECK THE ENERGIZE CIRCUIT FOR A SHORT TO GROUND
Turn the key start switch and the disconnect switch to the OFF position.
Remove the jumper wire fitted in the previous Test Step.
Disconnect the machine harness connector(s) from the ECM.
At the machine harness connector, measure the resistance from connector contact J2-5 (wire A958-WH) to all possible sources of ground.Expected Result:Each resistance measurement is greater than 5 ohms.Results:
YES - Each resistance measurement is greater than 5 ohms. The machine harness is correct. Proceed to Test Step 3.
NO - One or more measurements are less than 5 ohms. There is a short in the machine harness. The short is between J2-5 (wire A958-WH) and the circuit with the low resistance measurement.Repair: Repair the machine harness or replace the machine harness. STOPTest Step 3. CHECK IF THE DIAGNOSTIC CODE IS STILL ACTIVE
Inspect the harness connectors and clean the contacts of the harness connectors.
Reconnect all harness connectors.
Turn the disconnect switch and the key start switch to the ON position.
Operate the machine.
Check the status of the CID 1610 FMI 06. Expected Result:The CID 1610 FMI 06 is active. Results:
YES - The CID 1610 FMI 06 is active. The diagnostic code has not been corrected. The ECM may have failed.Repair: It is unlikely that the ECM has failed. Exit this procedure and perform this procedure again. If the cause of the diagnostic code is not found, replace the ECM. Refer to Troubleshooting, Testing and Adjusting, "Electronic Control Module (ECM) - Replace".STOP
NO - The CID 1610 FMI 06 is not active. The diagnostic code does not exist at this time. Repair: The initial diagnostic code was probably caused