Komatsu PC200-8M0 Shop Manual page 723

303 Troubleshooting by failure code, Part 3
Failure code [DHPBMA] R Pump Press Sensor Abnormality
Cause
Hot short circuit in wiring harness
5
(contact with 5 V/24 V circuit)
6 Defective pump controller
Circuit diagram related to rear pump pressure sensor
PC200, 200LC, 220, 220LC-8M0
Procedure, measuring location, criteria and remarks
1. Turn starting switch to OFF position.
2. Disconnect connector P26.
3. Connect T-adapters to female side of connector P26.
4. Turn starting switch to ON position.
Between P26 (female) (2) and ground
If no failure is found by above checks, pump controller is defective. (Since this
is an internal defect, troubleshooting cannot be performed.)
SEN06135-00
Voltage Max. 1 V
47
40-303