Nissan Juke Service and Repair Manual : Electric ignition system

Electric ignition system  : System Diagram

Electric ignition system  : System Description

Electric ignition system  : System Description


*1: CVT models

*1: CVT models
*2: M/T models
*3: ECM determines the start signal status by the signals of engine speed and battery voltage.


Firing order: 1 - 3 - 4 - 2 The ignition timing is controlled by the ECM to maintain the best air-fuel ratio for every running condition of the engine. The ignition timing data is stored in the ECM.

The ECM receives information such as the injection pulse width and camshaft position sensor (PHASE) signal.

Computing this information, ignition signals are transmitted to the power transistor.

During the following conditions, the ignition timing is revised by the ECM according to the other data stored in the ECM.

At starting
During warm-up
At idle
At low battery voltage During acceleration

The knock sensor retard system is designed only for emergencies. The basic ignition timing is programmed within the anti-knocking zone, if recommended fuel is used under dry conditions. The retard system does not operate under normal driving conditions. If engine knocking occurs, the knock sensor monitors the condition.

The signal is transmitted to the ECM. The ECM retards the ignition timing to eliminate the knocking condition.

    Fuel pressure control
    Fuel pressure control : System Diagram Fuel pressure controlL : System Description INPUT/OUTPUT SIGNAL CHART *: ECM determines the start signal status by the engine speed signal and battery v ...

    Intake valve timing control
    Intake valve timing control : System Diagram Intake valve timing control : System Description INPUT/OUTPUT SIGNAL CHART SYSTEM DESCRIPTION This mechanism hydraulically controls cam phases co ...

    Other materials:

    Microphone signal circuit
    Description Power is supplied from NAVI control unit to microphone. The microphone transmits the sound voice to the NAVI control unit. Diagnosis Procedure 1.CHECK CONTINUITY BETWEEN NAVI CONTROL UNIT AND MICROPHONE CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect NAVI control unit connecto ...

    Fuel Efficient Driving Tips
    Follow these easy-to-use Fuel Efficient Driving Tips to help you achieve the most fuel economy from your vehicle. 1. Use smooth accelerator and brake pedal application.   Avoid rapid starts and stops.   Use smooth, gentle accelerator and brake application whenever possible.   ...

    P0643 sensor power supply
    DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1.PRECONDITIONING If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. TESTING CONDITION: Before performing the following proced ...