13A-6
SCV: Suction Control Valve
*
: Contact DENSO Service Station for repair.
Symptoms
Engine does not start
Engine hard to start
Engine knocks
Engine output unstable
Excessive black smoke
Engine output not sufficient
Engine maximum speed too high
Engine idling unstable
Engine stalls immediately after start
Engine does not reach maximum speed
Fuel supply insufficient
Warning lamp illuminates
Reference
Gr
Possible causes
Common rail system abnormal O Gr13E
Supply pump
Defective feed pump O O O O O O
*
Incorrect pump output O O O O O
*
Defective pressurized-fuel delivery system O O O O O
*
Defective SCV; Defective base supply pump O O O O O
*
SCV open-circuited, short, or intermittent connec-
tion
O O O O O O Gr13E or
*
Defective sealing O O O
*
Common rail
Pressure limiter valve opening pressure too low O O O O O
Operation of flow damper O O
Common rail pressure sensor circuit open, short, or
intermittent connection
O O O O O O O Gr13E
Defective sealing O O O O
Incorrect
injector fuel
injection
Injector magnetic valve open-circuited, short, or in-
termittent connection
OO OOOO OGr13E or
*
Defective injector, injector magnetic valve, or injec-
tion nozzle
OO OOOO O
*
Orifice clogged O O O O
Fuel filter clogged O O O OOOO
Clogged water separator O O O O O
No fuel in fuel tank O O O O O O
High-pressure
piping
Defective sealing or sealing surface O O O O
Piping cracked O O O O O O
Piping crushed and restricted O O O O
Foreign matter stuck in piping O O O O
Low-pressure
piping
Defective sealing or sealing surface O O O O O O
Piping cracked or clogged O O O O O O
Air or water in fuel system O O O OOOO
Poor quality fuel is used O O O O O O O
Engine control
Incorrectly adjusted accelerator pedal stopper bolt O O
Defective accelerator position sensor O Gr13E
TROUBLESHOOTING
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