Fuel system MPi (MEMS) of car Land Rover Discovery 1
Mpi Fuel Management System (MEMS) — Description
Mpi - Modular Engine Management System (MEMS), controls fuel delivery and regulates ignition timing. Main functions of the system: Control of fuel supply and ignition timing in accordance with the...
Mpi - Modular Engine Management System (MEMS), controls fuel delivery and regulates ignition timing. Main functions of the system: Control of fuel supply and ignition timing in accordance with the...
System operation
When the ignition is turned on, battery voltage is supplied to terminal 11 of the control unit. From the control unit, grounding of the main relay is supplied to terminal 4 (disconnectable...
When the ignition is turned on, battery voltage is supplied to terminal 11 of the control unit. From the control unit, grounding of the main relay is supplied to terminal 4 (disconnectable...
Adjusting the accelerator cable
Note: Before adjusting the cable using diagnostic equipment, make sure that the throttle position sensor and stepper motor are in sync. Check that the cable is routed correctly. 1. Turn on the...
Note: Before adjusting the cable using diagnostic equipment, make sure that the throttle position sensor and stepper motor are in sync. Check that the cable is routed correctly. 1. Turn on the...
Repair — knock sensor
1. Disconnect the sensor connector. 2. Remove the sensor. 3. Clean the sensor seating surface. 4. Tighten the sensor to 15 Nm and connect the connector.
1. Disconnect the sensor connector. 2. Remove the sensor. 3. Clean the sensor seating surface. 4. Tighten the sensor to 15 Nm and connect the connector.
Ignition coils
1. Disconnect the battery. 2. Disconnect the high-voltage wires from the coils. Note: Mark the wire connection locations. 3. Disconnect the two coil connectors. 4. Disconnect the crankshaft position...
1. Disconnect the battery. 2. Disconnect the high-voltage wires from the coils. Note: Mark the wire connection locations. 3. Disconnect the two coil connectors. 4. Disconnect the crankshaft position...
Coolant temperature sensor
1. Place a container under the water pump hose to collect the liquid. 2. Disconnect the coolant temperature sensor connector. 3. Cut off the plastic clamp supporting the sensor wires. 4. Remove the...
1. Place a container under the water pump hose to collect the liquid. 2. Disconnect the coolant temperature sensor connector. 3. Cut off the plastic clamp supporting the sensor wires. 4. Remove the...
Crankshaft position sensor
Removal 1. Place the car on a lift. 2. Disconnect the sensor intermediate wire connector. 3. Unscrew the screw securing the intermediate wires to the bracket. 4. Raise the car. 5. Unscrew the two...
Removal 1. Place the car on a lift. 2. Disconnect the sensor intermediate wire connector. 3. Unscrew the screw securing the intermediate wires to the bracket. 4. Raise the car. 5. Unscrew the two...
Fuel temperature sensor
1. Disconnect the sensor connector. 2. Remove the sensor. 3. Discard the sealing washer. 4. Installation is carried out in reverse order. Install a new sealing washer. The sensor tightening torque is...
1. Disconnect the sensor connector. 2. Remove the sensor. 3. Discard the sealing washer. 4. Installation is carried out in reverse order. Install a new sealing washer. The sensor tightening torque is...
Engine control unit
1. Unscrew the 3 control unit mounting bolts. 2. Disconnect the two wiring connectors from the control unit. 3. Disconnect the vacuum hose from the control unit. 4. Remove the control unit. 5. For...
1. Unscrew the 3 control unit mounting bolts. 2. Disconnect the two wiring connectors from the control unit. 3. Disconnect the vacuum hose from the control unit. 4. Remove the control unit. 5. For...
Fuel vapor accumulator
1. Disconnect the fuel vapor canister purge valve connector. 2. Disconnect the vacuum hose from the valve. 3. Disconnect the fuel tank hose from the fuel vapor collector. 4. Loosen the fuel vapor...
1. Disconnect the fuel vapor canister purge valve connector. 2. Disconnect the vacuum hose from the valve. 3. Disconnect the fuel tank hose from the fuel vapor collector. 4. Loosen the fuel vapor...
Accelerator cable
1. Loosen the two nuts on the cable adjuster assembly. 2. Release the cable from the throttle lever cam. 3. Remove the panel at the driver's feet. 4. Remove the cotter pin from the accelerator cable...
1. Loosen the two nuts on the cable adjuster assembly. 2. Release the cable from the throttle lever cam. 3. Remove the panel at the driver's feet. 4. Remove the cotter pin from the accelerator cable...
Throttle position sensor
1. Disconnect the sensor connector. 2. Unscrew the two mounting screws and remove the sensor. 3. Installation is carried out in reverse order. Pay attention to the correct engagement of the sensor...
1. Disconnect the sensor connector. 2. Unscrew the two mounting screws and remove the sensor. 3. Installation is carried out in reverse order. Pay attention to the correct engagement of the sensor...
Air temperature sensor
1. Disconnect the sensor connector. 2. Remove the sensor from the intake manifold. 3. Installation is carried out in reverse order. The sensor tightening torque is 7 Nm.
1. Disconnect the sensor connector. 2. Remove the sensor from the intake manifold. 3. Installation is carried out in reverse order. The sensor tightening torque is 7 Nm.
Fuel vapor canister valve
1. Disconnect the fuel vapor canister purge valve connector. 2. Disconnect the vacuum hose from the valve. 3. Disconnect the valve mount. 4. Remove the valve. 5. Discard the sealing ring. 6....
1. Disconnect the fuel vapor canister purge valve connector. 2. Disconnect the vacuum hose from the valve. 3. Disconnect the valve mount. 4. Remove the valve. 5. Discard the sealing ring. 6....
Fuel manifold and injectors
Removal 1. Remove the intake manifold chamber gasket. 2. Remove the fuel pressure regulator. 3. Unscrew the 4 bolts securing the fuel supply hose flange support bracket and remove the bracket. 4....
Removal 1. Remove the intake manifold chamber gasket. 2. Remove the fuel pressure regulator. 3. Unscrew the 4 bolts securing the fuel supply hose flange support bracket and remove the bracket. 4....
Throttle body
Removal 1. Disconnect the air supply hose from the throttle body. 2. Disconnect the stepper motor connector. 3. Disconnect the throttle position sensor connector. 4. Disconnect the crankcase...
Removal 1. Disconnect the air supply hose from the throttle body. 2. Disconnect the stepper motor connector. 3. Disconnect the throttle position sensor connector. 4. Disconnect the crankcase...
Fuel pressure regulator
1. Disconnect the battery. 2. Cover the place where the fuel hose connects to the fuel manifold, loosen the hose fastening nut, and relieve residual fuel pressure. Tighten the hose mounting nut. 3....
1. Disconnect the battery. 2. Cover the place where the fuel hose connects to the fuel manifold, loosen the hose fastening nut, and relieve residual fuel pressure. Tighten the hose mounting nut. 3....
Oxygen sensor
1. Disconnect the sensor connector. 2. Release the connector from the bracket clip. 3. Cut the plastic cable tie. 4. Remove the sensor and discard the sealing washer. 5. Installation is carried out...
1. Disconnect the sensor connector. 2. Release the connector from the bracket clip. 3. Cut the plastic cable tie. 4. Remove the sensor and discard the sealing washer. 5. Installation is carried out...
Air filter
1. Disconnect the throttle body air duct hose from the filter housing. 2. Remove the filter housing from the lower supports. 3. Remove the filter housing from the side supports. 4. Remove the filter...
1. Disconnect the throttle body air duct hose from the filter housing. 2. Remove the filter housing from the lower supports. 3. Remove the filter housing from the side supports. 4. Remove the filter...
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