PROTECTOR-SIDE BAR 3295958 - Caterpillar

Illustration 1 g01254277
Connections of "Left Steering Cylinder" position sensor
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(1) Left Steering Cylinder
(2) Right Steering Cylinder
(3) "Steering Position Sensor" connector on the back side of the cylinders This diagnostic code is associated with the "left steering cylinder" position sensor. The position sensor provides a PWM input signal to the Transmission/Chassis ECM and to the Implement ECM. The FMI 14 diagnostic code is active during times that the sensor is not responding as expected. And no external conditions that could cause this problem have been detected by the ECM.The sensor is a PWM sensor that operates at a frequency of approximately 500 hertz. The duty cycle of the PWM signal that is supplied to the ECM is measured in very small increments. The changes in the duty cycle of the sensor can not be measured with a digital multimeter.The possible causes of this diagnostic code are listed below:
Mechanical devices are broken or loose.
The sensor has failed.
The ECM has failed. This is unlikely. Note: Before performing this procedure, check for an active CID 1482 diagnostic code for the 10 volt sensor power supply of the Transmission/Chassis ECM. Correct any problem with the 10 volt power supply before performing this procedure.Note: Before performing this procedure, inspect the harness connectors that are involved in the circuit. Poor connections are often the cause of a problem in an electrical circuit. Verify that all connections in the circuit are clean, that all connections are secure and that all connections are in good condition. If a problem with a connection is found, correct the problem and verify that this diagnostic code is active before performing this procedure. Note: The following test procedure may create other diagnostic codes. Ignore these created diagnostic codes and clear the diagnostic codes when the original diagnostic code has been corrected.Test Step 1. CHECK THE MECHANICAL CONNECTIONS
Turn the key start switch and the disconnect switch to the OFF position.
Visually inspect the mechanical connections for the left steering cylinder. Verify that all mechanical connections and adjustments for the "steering cylinder" are in good condition and verify that none of the mechanical connections are loose. Expected Result:All mechanical connections for the steering cylinder are in good condition and no mechanical connections are loose.Results:
OK - All mechanical connections for the steering cylinder are correct. Proceed to Test Step 2.
NOT OK - All mechanical connections for the steering cylinder are not correct.Repair: Perform the maintenance that is required in order to correct the problem with the mechanical connections for the steering cylinder. After the problem has been corrected, verify that this diagnostic code is still active before proceeding with this procedure.STOPTest Step 2. CHECK THE SENSORThe key start switch and the disconnect switch remain in the OFF position.
Disconnect the machine harness connector from the "left steering cylinder" position sensor and disconnect the machine harness connector from the "right steering cylinder" position sensor. Mark the harness connector for the "left steering sensor".
Connect the marked connector for the "left steering sensor" to the connector for the "right steering