Doosan D35S-5 Service Manual page 163

Trouble diagnosis flow in systems of sensors and wirings
Sensors and wirings check flow
Check connectors
and wires for connection (DCP, TDC,
PC, Accel sensor)
OK
Check rotation
signals, and active conditions of CKP
sensor and TDC sensor
OK
Check
PC sensor output
(Diagnosis equipment) at 0 MPa after
10 minutes from engine
stop
OK
Check
PC sensor
(diagnosis equipment)
Check to see if pressure
increases to the pressureset at leakage
check mode and check PC
movement at the
same time.
OK
Check accel
sensor output (with diagnosis
equipment) and voltage value at idle
full (PTO system also must be
checked)
OK
Check main relay
operating sound and voltage supply
(19V)
OK
D439E Service Manual
NG Repair or replace connector
connection and wiring
Check and replace flywheel for any
damage (Check to see if the air
NG
gap between sensor and flywheel
tone wheel is proper)
CKP sensor
TDC sensor
NG
Check wiring
Replace PC sensor
Check Pressure
NG
limiter leakage (Return pipe at the
pressure limiter is cold,
warm-up)
Check wiring
Replace PC sensor
NG
Adjust accel sensor
NG
Check wiring and replace
relay
161
NG
OK
Hot
Cold
NG
OK
Repair wiring
Replace the rail
Repair wiring
4. Fuel system