GUARD GP-CRANKCASE 4255783 - Caterpillar

Illustration 1 g02351813
Schematic for the Left Side Attachment Pedal sensorNote: The sensor is not directly connected to the frame ground. The sensor return connects to the ECM, and the ECM connects the sensor return to frame ground internally.This diagnostic code is for the Left Side Attachment Pedal sensor. An FMI 04 indicates the machine ECM has determined the sensor output signal voltage is above normal. Possible causes for this diagnostic code are:
A failed sensor.
The sensor output signal is shorted to ground.
The machine ECM may have failed, but is unlikely.Note: Poor connections are often the cause of a problem in electrical circuits. Before performing this procedure, inspect all the machine harnesses and connectors involved in the circuit. Make sure to verify that all of the connections in the circuit are clean, secure, and in good condition. Correct any problems found with any of the connections. Verify the diagnostic code CID 1130 FMI 04 is still active, before continuing with this procedure.Note: The following test procedure may create other diagnostic codes. Ignore these created diagnostic codes now, but clear those codes when the original diagnostic code has been corrected. Test Step 1. CHECK THE SENSOR
Turn the disconnect switch and the key start switch to the OFF position.
Disconnect the machine harness connector from the Left Side Attachment Pedal sensor.
Turn the disconnect switch and the key start switch to the ON position.
Observe