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Home >> Nissan-Datsun >> 2010 >> Cube SL >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Component Testing >> ASCD Brake Switch >> Diagnosis Procedure
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Diagnosis Procedure

  1. CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT-I
    1. Turn ignition switch OFF.
    2. Disconnect ASCD brake switch harness connector.
    3. Turn ignition switch ON.
    4. Check the voltage between ASCD brake switch harness connector and ground.
    TERMINAL VOLTAGE REFERENCE CHART

    ASCD brake switch Ground Voltage
    Connector Terminal
    E112 1 Ground Battery voltage

    Is the inspection result normal? 

    YES: GO TO  7.

    NO-1: CVT models: GO TO 2.

    NO-2: M/T models: GO TO  3.

  2. DETECT MALFUNCTIONING PART

    Check the following.

    • Harness connectors E105, M77
    • 10 A fuse (No. 2)
    • Harness for open or short between ASCD brake switch and fuse

    Repair open circuit or short to ground or short to power in harness or connectors.

  3. CHECK ASCD CLUTCH SWITCH POWER SUPPLY CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect ASCD clutch switch harness connector.
    3. Turn ignition switch ON.
    4. Check the voltage between ASCD clutch switch harness connector and ground.
    TERMINAL VOLTAGE REFERENCE CHART

    ASCD brake switch Ground Voltage
    Connector Terminal
    E111 3 Ground Battery voltage

    Is the inspection result normal? 

    YES: GO TO  5.

    NO: GO TO 4.

  4. DETECT MALFUNCTIONING PART

    Check the following.

    • Harness connectors E105, M77
    • 10 A fuse (No. 2)
    • Harness for open or short between ASCD clutch switch and fuse

    Repair open circuit or short to ground or short to power in harness or connectors.

  5. CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT-II
    1. Turn ignition switch OFF.
    2. Disconnect ASCD brake switch harness connector.
    3. Check the continuity between ASCD clutch switch harness connector and ASCD brake switch harness connector.
      TERMINAL VOLTAGE REFERENCE CHART

      ASCD clutch switch ASCD brake switch Continuity
      Connector Terminal Connector Terminal
      E111 4 E112 1 Existed
    4. Also check harness for short to ground and short to power.

    Is the inspection result normal? 

    YES: GO TO 6.

    NO: Repair open circuit or short to ground or short to power in harness or connectors.

  6. CHECK ASCD CLUTCH SWITCH

    Refer to "COMPONENT INSPECTION (ASCD CLUTCH SWITCH) ".

    Is the inspection result normal? 

    YES: GO TO  9.

    NO: Replace ASCD clutch switch.

  7. CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check the continuity between ASCD brake switch harness connector and ECM harness connector.
      TERMINAL CONTINUITY REFERENCE CHART

      ASCD brake switch ECM Continuity
      Connector Terminal Connector Terminal
      E112 2 E16 100 Existed
    4. Also check harness for short to ground and short to power.

    Is the inspection result normal? 

    YES: GO TO 8.

    NO: Repair open circuit or short to ground or short to power in harness or connectors.

  8. CHECK ASCD BRAKE SWITCH

    Refer to "COMPONENT INSPECTION (ASCD BRAKE SWITCH) ".

    Is the inspection result normal? 

    YES: GO TO 9.

    NO: Replace ASCD brake switch.

  9. CHECK INTERMITTENT INCIDENT

    Refer to "INTERMITTENT INCIDENT ".

    INSPECTION END

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