1 - Air temperature sensor; 2 - Fuel pressure regulator; 3 - Fuel return to the tank; 4 - Fuel supply; 5 - Stepper idle control motor; 6 - Injector; A - Connector wiring injector and air temperature sensor; A1 - Air temperature sensor; A2 - Injector +; A3 - Injector -; A4 - Air temperature sensor; B - Wiring connector for idle and low load switch; B1 - + or - motor power supply; B2 - - or + motor power supply; B3 - Low load switch; B4 - Low load switch
Choke body components and terminals (left side) - E7J engine
C - Throttle potentiometer wiring connector; C1 - Mass; C2 - Power supply +5 volts; C4 - Throttle Position Information (0 - 5 volts); C5 - Not used; D - Upper half of the throttle body; E - Lower half of the throttle body
Examination
1. If damage appears in the fuel injection system, first make sure that all system wiring connectors are securely connected and not oxidized. Check that the air filter element is clean, the spark plugs are in good condition, the spark plug gaps are properly adjusted, the engine compression is normal, the ignition timing is set correctly, the engine breather hoses are not clogged or damaged.
2. If, as a result of these checks, the cause of the problem could not be identified, it is necessary to contact a suitably equipped Renault center for testing. The block wiring connector is included in the engine management system circuit, to which a special electronic diagnostic tester can be connected; the connector is clipped to the bulkhead in the engine compartment. The tester will identify damage quickly and easily, without having to test all system components individually, which is time consuming and can damage the ECU.
3. If the control lamp on the dashboard lights up while driving "electronics failure", or it stays on for more than 3 seconds after the ignition is turned on, the problem may be in one or more of the following components:
- a) Pipeline pressure sensor.
- b) Throttle Potentiometer.
- With) Injectors.
- d) Idle speed stepper motor (not on all engines).
- e) Vehicle speed sensor (while driving).
- f) Exhaust gas recirculation solenoid valve (only K7M and F3R engines).
- g) Automatic transmission computer.
4. You can check the resistance of some individual components using the information in Specifications, but other nodes (idle control stepper motor) cannot be checked and adjusted (refer to illustrations).
Adjustment
1. Experienced car enthusiasts with significant experience and equipment (including tachometer and accurately calibrated exhaust gas analyzer) can check the CO level and idle speed. However, if adjustment is required, contact a Renault workshop. Mixture (CO level) and idle speed are not adjustable, and if any of these values are incorrect, there is damage in the fuel injection system.