TRENCHER AR 1660766 - Caterpillar

Table 1
Related Components: Possible Causes: Recommended Action:
Valve/Lines Swing spool is malfunctioning Refer to Troubleshooting, "IMV Calibration - Functional Test"(1)
Refer to Troubleshooting, "IMV Controllability Troubleshooting"(2)
Drive bypass stem is malfunctioning Refer to Troubleshooting, "Bypass Valve (ACS Valve) - Functional Test"
Electronics/Harness/Solenoids Stick/swing joystick is malfunctioning Refer to Troubleshooting, "Joystick - Functional Test"(1)
Yaw rate sensor failure Verify swing speed reading in the monitor under "Status", "Hybrid System Status", "Swing Speed/Direction".
Swing port pressure sensor failure Refer to the appropriate diagnostic code troubleshooting procedure
Software Swing Left Proportional Hydraulic Modulating Valve (PHMV) slope calibration is not correct Refer to Troubleshooting, "IMV Calibration - Functional Test"
Swing Left PHMV cracking current calibration is not correct
Swing Right PHMV slope calibration is not correct
Swing Right PHMV cracking current calibration is not correct
Pump calibration incorrect Refer to Troubleshooting, "Pump Stroke - Functional Test"
Slope value is 0mm/A or near 0mm/A Refer to Troubleshooting, "IMV Calibration - Functional Test"
Cracking calibration value is 0mA or near 0mA
Pump/Motor/Tank Rear pump displacement does not match desired displacement Refer to Testing and Adjusting, KENR9615, "Pump Flow Measurement"
(1) Denotes actions that should be completed first in the troubleshooting sequence.
(2) Denotes Functional Tests that should be considered as a last resort in the troubleshooting process.