SPACER 5J1907 - Caterpillar

Illustration 1 g01031944
Schematic for the Position Sensor (Third Function) of the JoystickThis diagnostic code is recorded when the implement electronic control module (ECM) determines that the signal for the position sensor (third function) of the joystick is too low. The position sensor (third function) of the joystick is a 500 Hz pulse width modulated sensor.The possible causes for this diagnostic code are listed:
The position sensor (third function) of the joystick rotated below the normal operating range.
The signal circuit is shorted to ground.System Response:The machine response is listed:
The third function will not operate.
The rocker switch (thumb) must be recentered before movement of the third function is allowed.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 is corrected. Note: Ensure that the diagnostic code is active and that the diagnostic code indicator is active.Test Step 1. CHECK THE ALIGNMENT OF THE POSITION SENSOR (THIRD FUNCTION) OF THE JOYSTICK
Check the mounting hardware for the position sensor (third function) of the joystick. The fasteners should be tight. If the sensor shows any signs of damage the hardware should be replaced.
Check the duty cycle of the position sensor (third function) of the joystick. In order to measure the duty cycle of the sensor, use a 9U-7330 Digital Multimeter with a 7X-1710 Multimeter Probe. At the implement ECM, use contact J2-38 and contact J1-15. Move the rocker switch (thumb) to the full travel in both directions.Expected Result:The duty cycle should be between 10% and 90%.Results:
YES - The duty cycle is correct.Repair: Calibrate the position sensor (third function) of the joystick. Stop.
NO - The duty cycle is not correct.Repair: Replace the position sensor (third function) of the joystick. Calibrate the new sensor. Check for an active code. Stop.