Fuel injection system MPI Mitsubishi Colt 4 and 5

General description of the MPI fuel injection system
Typical layout of MPI fuel injection system components Injection system operation diagram The MPI fuel injection system operates using several units and parts: the fuel...

Safety precautions when working with the fuel injection device
Only start the engine with the battery terminals securely tightened. Do not use any quick chargers instead of the battery. When quickly charging the battery, disconnect...

Relieving pressure in the fuel system
When servicing fuel system components, it is necessary to first release the pressure: Remove the back seat. Disconnect the fuel pump connector from the side of the fuel...

Components of the fuel injection system
1 - oxygen sensor (lambda probe); 2 - knock sensor; 3 - coolant temperature sensor; 4 - nozzle; 5 - forced engine ventilation valve; 6 - vacuum container; 7 - vacuum...

Idle mode — check
To check you need to: Bring the engine to operating temperature and turn it off (coolant temperature 80-90°C). Turn off all power consumers. Set the gearbox to neutral,...

Throttle Closed Position Switch — Adjustment
Connect the tester to the diagnostic connector. Insert a 0.65 mm thick feeler gauge (2) between the factory idle speed adjustment screw (3) and the throttle lever (1)....

Throttle Closed Position Switch and Accelerator Pedal Position Sensor — Adjustment
Connect the tester to the diagnostic connector Insert a 0.5 mm thick feeler gauge (2) between the accelerator lever (1) and the throttle lever (3) to a depth of 3 mm....

Throttle lever — adjusting the position of the eint-stop
Loosen the throttle cable tension. Loosen the lock nut of the throttle lever stop screw. Turn the screw counterclockwise until the screw extends to the desired amount,...

Idle speed — adjustment
CAUTION: The idle speed is adjusted at the factory using the idle speed adjustment screw. Check: that the spark plugs, injectors, and idle speed controller are in good...

Fuel pump — operating instructions
If the fuel pump does not work, check it using the following method, and if it is working properly, check the power supply circuit. Turn the ignition key to the OFF...

Intake Manifold Air Temperature Sensor — Check
Disconnect the air flow sensor connector (1). Measure the resistance between terminals 5 and 6. Nominal value: 2.3-3.0 kOhm (at 20°C); 0.30-0.42 kOhm (at 80°C). Measure...

Coolant Temperature Sensor — Check
Remove the coolant temperature sensor. Place the sensitive element of the sensor in hot water and measure the resistance. Nominal value 2.1-2.7 kOhm (at 20°C); 0.26-0.36...

Throttle Position Sensor (TPS) — Check
After disconnecting the connector (1) of the throttle position sensor (2), measure the resistance between terminals 1 and 4 of the connector on the sensor side, which...

Oxygen sensor (lambda probe) — check
Disconnect the oxygen sensor connector (1) and connect the special tool (test wire harness) to the connector on the sensor side. Check that the circuit between terminals...

Fuel system components
Elements of the fuel system of 1.6 l and 1.8 l engines 1 - high pressure hose; 2 - gasket; 3 - distribution line (collector); 4 - wiring harness; 5 - gasket; 6 -...

Injector — check
Disconnect the connector from the injector. Measure the resistance between the terminals. Nominal value 13-16 Ohm (at 20°C). . Connect the injector connector. Injector...

Injector — removal and installation
Removal Disconnect the ground cable from the battery. Relieve the fuel pressure. Disconnect the positive crankcase ventilation hose. Disconnect the injector connectors....

Throttle body — removal and installation
Mounting elements of the throttle body for 1.6L and 1.8L engines 1 - vacuum tube; 2 - throttle body; 3 - idle speed control connector; 4 - throttle position sensor...

Throttle body — disassembly and assembly
Non-TCL models Throttle body components 1 - idle speed controller housing; 2 - gasket; 3 - throttle body; 4 - throttle position sensor; 5 - idle speed adjustment screw....

Typical fuel tank components
Typical fuel tank components for later model years 1 - clamp fastening; 2 - fuel tank; 3 - fuel tank protection; 4 - main fuel hose; 3 - fuel pump; 6 - fuel pump cover;...

Fuel tank — removal and installation
Removal Disconnect the ground cable from the battery. Drain the fuel from the fuel tank. Relieve fuel pressure in the fuel line. Remove the exhaust pipe. After...

Fuel filter — replacement
Relieve pressure from the fuel line. Remove the air intake hose. While holding the fuel filter with a wrench, loosen the hollow bolt (1), then remove the high pressure...

Fuel pump — replacement
Raise the rear seat cushion. Remove the protective cover (1). Typical fuel pump location Relieve any residual pressure in the fuel line. After disconnecting the fuel...

Diagnostics of fuel injection system malfunction
Diagnostics of fuel injection system malfunction

MPI injection self-diagnosis system
Mitsubishi vehicles are equipped with Mitsubishi ECl-Multi engine management systems (EMS) which control the primary ignition circuit, fuel system and engine idle...

Location of the self-diagnosis plug
CAUTION: The self-diagnosis plug is required for both reading flash codes and using the appropriate fault code reader. Early models The self-diagnosis system plug is...

Reading fault codes with a reading device
CAUTION: Additional trouble codes may be generated during certain testing procedures. Care must be taken as codes generated during testing may mislead the inspector. All...

Clearing fault codes without a reader
Disconnect the negative battery cable for at least 30 seconds. Connect the negative battery cable. CAUTION: The first disadvantage of performing this operation is that...

Self-diagnosis with fault code reader (all models)
CAUTION: When performing certain testing procedures, it may be that additional fault codes are generated. Care must be taken to ensure that the codes generated during...

Mitsubishi MPI System Error Code Table
All models except 4G93 Flash code/device code Place of refusal 0 There are no faults in the electronic control module. The check must be carried out using conventional...

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Similar materials for other Mitsubishi models

➤ Power unit: MPI fuel injection system Mitsubishi Lancer 9 (2000-2007, petrol)
➤ Power unit: Injection system (MPI) Mitsubishi Carisma (1995-2004)

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