Boom Raise Is Not Displayed Correctly With Monitoring Function - Komatsu PC88MR-10 Shop Manual

E-45 Boom RAISE is not displayed correctly with monitoring
function
(PC88MR-FFM-400-A-Z0-A)
"Boom RAISE" is not displayed correctly with monitoring function.
Failure
Related
Monitoring code: 01900 Pressure Switch 1
information
No. Cause
Defective boom RAISE
PPC oil pressure
1
sensor system (internal
open or short circuit)
PC88MR-10
Procedure, measuring location, criteria, and remarks
Perform troubleshooting for failure codes [DHS8MA].
40 Troubleshooting
Troubleshooting of electrical system (E-mode)
40-441