CONTROL GP-STEERING & XMSN 3851142 - Caterpillar

Illustration 1 g00816670
Schematic of the circuit for the sensor power supply
This diagnostic code will be recorded when the ECM reads the voltage for the circuit of the sensor supply as being above normal.The possible causes of the diagnostic code are listed:
Contact J2-15 (wire 767-WH(White)) is shorted to the + battery circuit.
The ECM has failed. This is unlikely.System Response:Possible results that may occur for this condition are listed:
The TCS operates incorrectly.
Associated sensors log diagnostic codes.Note: Ensure that the CID 0269 FMI 00 is active.Test Step 1. CHECK FOR A SHORT TO THE +BATTERY ON THE WIRE HARNESS
Turn the key start switch and the disconnect switch to the OFF position.
Disconnect the connector J2 from the brake ECM.
Turn the key start switch and the disconnect switch to the ON position.
Measure the voltage between contact J2-15 of the wire harness and frame ground. Expected Result:The voltage should be 0 volts.Results:
OK - The voltage is 0 volts. The circuit is correct. Proceed to Test Step 2.
NOT OK - Voltage is detected.Repair: The wire harness is shorted to battery voltage. Repair the wire harness or replace the wire harness.STOPTest Step 2. CHECK FOR ACTIVE DIAGNOSTIC CODE
Turn the key start switch and the disconnect switch to the OFF position.
Reconnect connector J2 to the ECM.
Turn the key start switch and the disconnect switch to the ON position.
Check for an active diagnostic code (CID 0269 FMI 00). Expected Result:The CID 0269 FMI 00 is not active.Results:
OK - The CID 0269 FMI 00 is not active.Repair: The problem does not exist at this time. Check all connectors on the wire harness and clean all contacts in the connectors.STOP
NOT OK - The CID 0269 FMI 00 is active.Repair: It is unlikely that the ECM has failed. Exit this procedure and perform this diagnostic code procedure again. If the cause of the diagnostic code is not found, replace the ECM. See Testing and Adjusting, "Electronic Control Module (ECM) - Replace".STOP