COMMON RAIL SYSTEM
07-CR-E5,07-CR-TE5,07-CR-TIE5, DM
1-S324
4. Check the Water Separator
1. Check the water level of the water separator and discharge
some water as necessary.
2. Replace the water separator filter with a new one every
500 hours or 1 year.
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5. Check the Fuel Feed Pump
1. Set the key switch to the ON position, check the fuel feed pump
alone, and check and replace the wiring harnesses.
2. Check the operation of the fuel feed pump by touching it directly
by hand.
• If there is a fuel feed pump malfunction, the fuel cannot be
supplied and so there is greater likelihood of improper
recognition of DTC codes related to the pressure and
injector. (Items where improper recognition is possible.)
• Injector COM1 TWV actuation system short
• SCV actuation system abnormality
•Others
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6. Fuel Filter Clogged
1. Check the fuel filter for clogging and dirt.
• Replace the fuel filter every 500 operation hours.
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7. Engine oil Level Increase (Engine Internal Leak)
1. Check the engine oil level increase with dipstick.
2. Request fuel dilution analysis or oil analysis from a third party as
necessary.
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OK Go to "5. Check the Fuel Feed Pump".
NG Replace the filter and drain the water from the water separator.
(1) Water Separator Filter
OK Go to "6. Fuel Filter Clogged".
NG Replace the wiring harness, and replace the fuel feed pump.
(1) Fuel Feed Pump
OK Go to "7. Engine Oil Level Increase (Engine Internal Leak)".
NG Clean or replace the fuel filter and fuel pipe system.
(1) Fuel Filter
OK Go to "8. Check the High Pressure Piping and CRS Components (Such
as the Fuel Injector and the Supply Pump) for Fuel Leakage (Engine
External Leak)".
NG Check and repair interior pipes.
(1) Dipstick
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