Troubleshooting Flowchart - Doosan HP1600WCU Electronic Service Manual

TROUBLE SHOOTING FLOW CHART
Control panel key is turned to "ON" position,
WEDGE controller annunciator lamps and 4
digit LED display do not come on
B
WEDGE controller annunciator lamps & 4
digit LED display initialize OK but alternator
lamp and engine oil pressure lamps do not
blink.
B
Engine cranks but will not start
B
Engine does not crank when key turned to
crank position
B
Compressor fails to load
when "Service Air" switch pressed
Book No. 22772784 (9--8--06)
Check F1 fuse
Check operation of switch S1
Check wiring from S1 to WEDGE controller
Check battery voltage, ensure battery dis-
connect switch is turned ON
J1939 CAN communications not working –
Check for 24VDC key switch at engine, CAN
network wiring problem
Ensure 24VDC power to engine ECM
Check connector pins
Ensure key switch (24VDC) at engine
Frozen fuel cooler or associated piping
Estop button pressed (ESA units) or
Estop jumpers not making connection
Clear active engine fault code
Check switch S1
Check relay K1
Check starter solenoid
Check starter motor
Check WEDGE output to K1 relay
Check battery voltage
Check Run/Start valve operation
Verify frequency throttle signal at engine
Check "Service Air" switch operation
HP1300/1600WCU Electrical Manual
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