LEMON Manuals: Even more car manuals for everyone
Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Engine Control System - 3.5L) >> DTC P0650: Mil >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK MIL POWER SUPPLY 
    1. Turn ignition switch OFF.
    2. Disconnect combination meter harness connector.
    3. Turn ignition switch ON.
    4. Check voltage between combination meter terminals 17, 18 and ground with CONSULT-II or tester

      Voltage: Battery voltage 

    OK or NG

    1. OK : GO TO  3.
    2. NG : GO TO 2.
      Fig 1: Checking Voltage Between Combination Meter Terminals 17, 18 And Ground
      G02885691Courtesy of NISSAN MOTOR CO., U.S.A.
  2. DETECT MALFUNCTIONING PART 

    Check the following.

    • Fuse block (J/B) connector M4
    • 10A fuse
    • Harness for open or short between fuse block (J/B) and combination meter
    1. : Repair harness or connectors.
  3. CHECK MIL OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check harness continuity between ECM terminal 33 and combination meter terminal 23.

      Refer to Wiring Diagram .

      Continuity should exist. 

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

    OK or NG

    1. OK : GO TO  5.
    2. NG : GO TO 4.
  4. DETECT MALFUNCTIONING PART 

    Check the following.

    • Harness connectors F59, M71
    • Harness for open or short between ECM and combination meter
    1. : Repair open circuit or short to ground or short to power in harness or connectors.
  5. CHECK COMBINATION METER 
    1. Turn ignition switch OFF.
    2. Disconnect combination meter harness connector.
    3. Check continuity under the following conditions.
      Fig 2: Continuity Table
      G02885692Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 3: Checking Continuity Between Combination Meter Connector Terminals
      G02885693Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    1. OK : GO TO 6.
    2. NG : Replace combination meter. Refer to "COMBINATION METER ".
  6. CHECK INTERMITTENT INCIDENT 

    Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

    1. : INSPECTION END