MID 039 - Machine Control Module
CID 3458 - Autonomous Steering Enable Solenoid Valve Displacement Sensor
FMI 20 - Data Drifted High
Illustration 1 | g03814403 |
This diagnostic code is active when the Input/Output Module (I/O Module) detects the data from the Autonomous Steering Enable Solenoid Valve Displacement Sensor ("SEL Valve Spool Pos") has drifted high, out of range.
Test Step 1. CHECK THE SENSOR.
- Turn the keyswitch and battery disconnect to the OFF position.
- Visually inspect the sensor and sensor wires for damage.
Expected Result:
The sensor and sensor wires are in good working condition.
Results:
- OK - The sensor and sensor wires has not been damaged. Proceed to Test Step 2.
- NOT OK - The sensor or sensor wires has been damaged.
Repair: Replace the sensor.
STOP
Test Step 2. CHECK POWER TO THE SENSOR.
- Turn the keyswitch and battery disconnect to the ON position.
- Disconnect the three-pin connector from the sensor.
- Measure the voltage between contact A and contact B of the machine harness.
Expected Result:
The voltage measures approximately 8 V ± 2.
Results:
- OK - The measurement is approximately 8 V. Proceed to Test Step 5.
- NOT OK - The measurement is not approximately 8 V.
Repair: There is a problem in the 8V sensor supply wire (C985-PK(Pink)) or 8V sensor return wire (C988-BK(Black)) for the sensor. Repair or replace as necessary.
STOP
Test Step 3. EXAMINE THE SIGNAL OUTPUT FROM THE SENSOR
- Measure the voltage on the signal output from the sensor.
Expected Result:
The voltage measure between 0.25V and 4.75V
Results:
- OK - The measurement is between 0.25V and 4.75V. Proceed to Test Step 4.
- NOT OK - The measurement is outside of 0.25V and 4.75V.
Repair: Replace the Sensor.
STOP
Test Step 4. COMPARE THE SIGNAL OUTPUT FROM THE SENSOR TO THE SIGNAL INPUT AT THE ECM.
- Measure the voltage on the signal output from the sensor.
- Measure the voltage at the signal input at the ECM.
Expected Result:
The voltage measurements are within +/- 0.2V of each other.
Results:
- OK - The measurement is within +/- 0.2V of each other. Proceed to Test Step 5.
- NOT OK - The measurement is outside of +/- 0.2V of each other.
Repair: Repair or replace the harness.
STOP
Test Step 5. CHECK IF THE DIAGNOSTIC CODE REMAINS.
- Turn the keyswitch and battery disconnect to the ON position.
- Clean the contacts of the harness connectors.
- Reconnect all harness connectors.
- Observe the status of the diagnostic code.
- Operate the machine.
- Observe the status of the diagnostic code.
Expected Result:
The diagnostic code is NO longer active.
Results:
- YES - The diagnostic code is NO longer active. The diagnostic code does not exist now. The initial diagnostic code was probably caused by a poor electrical connection and/or a short at one of the harness connectors that was disconnected and then reconnected. Resume normal machine operation.
STOP
- NO - The diagnostic code has not been corrected. The sensor has failed.
Repair: Replace the sensor. After replacing the sensor, ensure that the new sensor is properly calibrated.
STOP