Troubleshooting - Mitsubishi 6M60-TL Service Manual

TROUBLESHOOTING

Possible causes
Common rail system abnormal
Defective feed pump
Incorrect pump output
Defective pressurized-fuel delivery system
Supply pump
Defective SCV; Defective base supply pump
SCV open-circuited, short, or intermittent connec-
tion
Defective sealing
Pressure limiter valve opening pressure too low
Operation of flow damper
Common rail
Common rail pressure sensor circuit open, short, or
intermittent connection
Defective sealing
Injector magnetic valve open-circuited, short, or in-
termittent connection
Incorrect
injector fuel Defective injector, injector magnetic valve, or injec-
injection tion nozzle
Orifice clogged
Fuel filter clogged
Clogged water separator
No fuel in fuel tank
Defective sealing or sealing surface
Piping cracked
High-pressure
piping
Piping crushed and restricted
Foreign matter stuck in piping
Defective sealing or sealing surface
Low-pressure
piping
Piping cracked or clogged
Air or water in fuel system
Poor quality fuel is used
Incorrectly adjusted accelerator pedal stopper bolt
Engine control
Defective accelerator position sensor
SCV: Suction Control Valve
: Contact DENSO Service Station for repair.
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13A-6
Symptoms
O O
O O
O O
O O
O O
O
O O
O
O O O
O
O O
O O
O O
O O
O O O
O O
O
O O O
O
O
O O
O O
O O
O O
O Gr13E
O O O O
O O O
O O O
O O O
O O O O Gr13E or
O O
O O O
O
O O O O Gr13E
O O O
O O O O O Gr13E or
O O O O O
O O
O O O O O
O O
O O O O
O O O
O O O
O O O
O O O
O O O O
O O O O
O O O O O
O O O O O
O O
O Gr13E
Reference
Gr
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