HOUSING-TURBINE 7E3397 - Caterpillar

Illustration 1 g02039393
Schematic of the "Stick Angle" Sensor
This diagnostic code is associated with the "Stick Angle" Sensor. This diagnostic code is recorded when the Machine ECM finds the frequency, or the pulse width of the signal, are not within the expected range. Note: Before performing the following procedure, ensure that the diagnostic code for this procedure is active.The possible causes of this diagnostic code are listed below:
The sensor has failed.
Intermittent connections or poor connections Test Step 1. CHECK THE +24 DCV SUPPLY VOLTAGE.
Turn the key start switch and the disconnect switch to the OFF position.
Disconnect the machine harness connector from the sensor.
Turn the disconnect switch and the key start switch to the ON position.
At the machine harness connector for the sensor, measure the voltage (DCV) between contact A (wire 159-BU(Blue)) and contact B (wire 235-BK(Black)).
At the machine harness connector for the sensor, measure the voltage (DCV) between contact A (wire 159-BU(Blue)) and frame ground. Expected Result:The voltage is 24 1.0 DCV for both measurements. Results:
OK - The voltage is 24 1.0 DCV for both measurements. The voltage is correct. Proceed to Test Step 2.
NOT OK - The voltage is NOT 24 1.0 DCV for both measurements. The voltage is not correct. The Machine ECM has failed or the harness has failed. Repair: Is unlikely that an ECM has failed. Verify the harness. If the harness is correct, replace the Machine ECM. STOPTest Step 2. VERIFY THE GROUND OF THE SENSOR.
At the machine harness connector of the sensor, place a jumper between contact B (wire 235-BK(Black)) and frame ground.
At the machine harness connector J1, measure the resistance between the contact J1-14 (wire 235-BK(Black)) and frame ground.
At the machine harness connector J1, measure the resistance between the contact J1-2 (wire 235-BK(Black)) and frame ground. Expected