LEMON Manuals: Even more car manuals for everyone
Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1182 (Engine Control System - DTCS P0222 To P0607 (VQ40DE)) >> DTC P0327, P0328, P0332, P0333: KS >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK KNOCK SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-I
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check resistance between ECM terminals 15, 36 and ground. Refer to WIRING DIAGRAM .
      NOTE: It is necessary to use an ohmmeter which can measure more than 10 MΩ.

      Resistance: Approximately 532 - 588 kΩ [at 20°C (68°F)] 

    4. Also check harness for short to ground and short to power.

    OK or NG 

    OK: GO TO  5.

    NG: GO TO 2.

  2. CHECK KNOCK SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-II
    1. Disconnect knock sensor harness connector.
    2. Check harness continuity between ECM terminal 15 and knock sensor (bank1) terminal 1, ECM terminal 36 and knock sensor (bank 2) terminal 1.

      Refer to WIRING DIAGRAM .

      Continuity should exist  .

    3. Also check harness for short to ground and short to power.

    OK or NG 

    OK: GO TO  4.

    NG: GO TO 3.

    Fig 1: Identifying Bank1 And Bank2 Of Knock Sensor
    G08170551Courtesy of NISSAN NORTH AMERICA, INC.
  3. DETECT MALFUNCTIONING PART

    Check the following.

    • Harness connectors F67, F250
    • Harness for open or short between ECM and knock sensor

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

  4. CHECK KNOCK SENSOR

    Refer to "COMPONENT INSPECTION ".

    OK or NG 

    OK: GO TO 5.

    NG: Replace malfunctioning knock sensor. Refer to "EXPLODED VIEW ".

  5. CHECK GROUND CONNECTIONS
    1. Turn ignition switch OFF.
    2. Loosen and retighten three ground screws on the body.

    Refer to "GROUND INSPECTION ".

    Fig 2: Checking Ground Connections
    G08170552Courtesy of NISSAN NORTH AMERICA, INC.

    OK or NG 

    OK: GO TO 6.

    NG: Repair or replace ground connections.

  6. CHECK KNOCK SENSOR SHIELD CIRCUIT FOR OPEN AND SHORT
    1. Disconnect knock sensor harness connector.
    2. Check harness continuity between knock sensor terminal 2 and ground. Refer to WIRING DIAGRAM .

    Continuity should exist  .

    OK or NG 

    OK: GO TO  8.

    NG: GO TO 7.

  7. DETECT MALFUNCTIONING PART

    Check the following.

    • Harness connectors F67, F250
    • Harness connectors F14, E5
    • Harness for open or short between knock sensor and ground

    Repair open circuit or short power in harness or connectors.

  8. CHECK INTERMITTENT INCIDENT

    Refer to "INTERMITTENT INCIDENT ".

    INSPECTION END 

scientia non olet · About LEMON Manuals