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1F1-30 M162 ENGINE CONTROLS Failure code Item Checking method Test step Requirement Specified value Possible cause 3.2 - 3.6 bar ••••• Fuel pressure:in idling speed - When the vacuum is applied • Engine:in idling - Close the valve screw on pressure tester ⇒ 1.0 Connect the fuel pressure test plug to the pressure tester (refer to the flgure on previous page). •
⇒ Fuel pump test • Fuel pressure regulator 3.7 - 4.2 bar ••••• Fuel pressure:in idling speed - When the vacuum is not applied • Engine:in idling - Close the valve screw on pressure tester ⇒ 2.0 Connect the fuel pressure test plug to the pressure tester (refer to the flgure on previous page). • Fuel pressure regulator > 3.0 bar ••••• Fuel system internal leakage: • Engine:stop ⇒ 3.0 Connect the fuel pressure test plug to the pressure tester (refer to the flgure on previous page). • The pressure drops rapidly:non-return valve in fuel pump > 2.5 bar • After 30 minutes from engine stop • The pressure drops slowly: - Injector test - Fuel pressure regulator - O-ring |