D439E Service Manual 4. Fuel system
152
Troubles
Check items
Engine overruns, accel
White/blue smoke
Discharging black smoke
Engine overheat
Engine stop is impossible with
ignition key
Diagnostic lamp remains on or
blinking
AC is not turn on
Self-diagnosis 1 1 1 1 1 1 1
Vehicle voltage supply
Main relay
Fuse/plug wire harness 4 2 2
Terminal 15 (Ignition ON/OFF signal) 3
CKP sensor
Run out of fuel
Wrong fuel 2
Fuel shortage
Air into the fuel 3
Fuel filter 4
Supply pump
Fuel pre-heater 5
Wrong injector connection
Injector
Mechanical components
(Pressure valve gap, compression etc)
5 7
Defective ECU 5
TDC sensor
Water temperature sensor (WTS) 6 2 4 3 5
Coolant loss 6
Glow plug system
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