Doosan P425CWJD - Troubleshooting Flow Chart

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Book: 23227143 (8-24-2010) Rev CPage36
Troubleshooting Flow Chart
Ignition switch (S1) is turned to the
“ON” position, WEDGE controller does
not initialize.
Check F1 fuse
Check WJDing connections from S1 to
WEDGE controller
Check battery voltage
WEDGE controller initializes but there
is a fault code listed on the display and
or there is a diagnostic lamp on solid.
Verify fault code and or diagnostic
lamp is a COMPRESSOR malfunction
or ENGINE malfunction
Follow appropriate troubleshooting
instructions
Ignition switch (S1) is turned to the
“START” position and the engine does
not crank.
Check WJDing from S1 switch to
WEDGE
Check relay K1 operation and
connections
Ignition switch (S1) is turned to the
“START” position and the engine
cranks but will not start.
Check fuel system
Check battery voltage
Service Air switch (S2) is pressed and
compressor fails to load.
Check WJDing from S2 switch to
WEDGE
Check Start/Run solenoid (L1)
operation and connections
Check for fault codes
Verify Machine ID