HOSE A 6V3014 - Caterpillar

Illustration 1 g00684154
Schematic of the Left Front Brake Oil Temperature Sensor
This diagnostic code is recorded when the VIMS electronic control module reads the signal and the frequency of the signal or pulse of the signal is not within an expected range. The possible causes of this failure are listed below:
The sensor has failed.
There are intermittent connections of the machine harness.
There are poor connections of the machine harness.
There are loose mechanical connections.
There is electro-magnetic interference.
The VIMS electronic control module has failed.System Response:This failure causes the left front brake oil temperature sensor to indicate the maximum temperature or this failure causes the left front brake oil temperature sensor to intermittently indicate the maximum temperature. Note: The "Sensor Voltage Test" within the topic "Pulse Width Modulated Sensor Troublshooting" also covers the troubleshooting of a failed sensor.Test Step 1. CHECK THE ELECTRONIC CONTROL MODULE AND THE MACHINE HARNESS.
Turn the disconnect switch and the key start switch to the "ON" position.
Disconnect the machine harness from the sensor.
At the machine harness connector for the sensor, measure the voltage between the signal contact C (wire C466-YL(Yellow)) and the ground contact B (wire J842-BK(Black)). Expected Result:The voltage is 5.0 0.5 DCV. Results:
OK - The voltage is 5.0 .5 DCV. The VIMS electronic control module and the machine harness are correct. Repair: The sensor has failed. Perform the Testing and Adjusting, "Pulse Width Modulated (PWM) Sensor Troubleshooting" procedure prior to replacing the sensor.STOP
NOT OK - The voltage is NOT 5.0 0.5 DCV. The VIMS electronic control module or the machine harness have failed. Proceed to test step 2.Test Step 2. CHECK THE GROUND CIRCUIT OF THE MACHINE HARNESS.
The sensor remains disconnected.
Turn the key start switch and the disconnect switch to the OFF position.
Disconnect J1 and J2 machine harness connectors from the VIMS electronic control module.
At the machine harness connector for the sensor, measure the resistance between ground contact B (wire J842-BK(Black)) and connector contact J2-19 (wire J842-BK(Black)). Expected Result:The resistance is less than 5.0 ohms. Results:
OK - The resistance is less than 5.0 ohms. The harness resistance is correct. Proceed to test step 3.
NOT OK - The resistance is greater than 5.0 ohms.Repair: The ground circuit in the harness has failed. There is an open circuit between the ground contact and frame ground. Repair the machine harness or replace the machine harness. STOPTest Step 3. CHECK FOR A SHORTED HARNESS .
The sensor and the VIMS electronic control module remain disconnected from the machine harness.
The disconnect switch and the key start switch remain in the OFF position.
Perform the measurements that are listed below at the machine harness connector for the sensor.
Measure the resistance between the signal contact C (wire C466-YL(Yellow)) and contact A (wire K983-BU(Blue)) of the 8 volt sensor supply .
Measure the resistance between the connector contact J1-1 (wire 170-YL(Yellow)) of the VIMS electronic control module and contact C (wire C466-YL(Yellow)) of the harness connector for the sensor. Expected Result:The resistance is greater than 5000 ohms. Results:
OK - The resistance is greater than 5000 ohms.