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Home >> Infiniti >> 2003 >> M45 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle >> DTC P1815: Manual Mode Switch >> Diagnostic Procedure

Diagnostic Procedure

  1. CHECK MANUAL MODE SWITCH CIRCUIT (WITH CONSULT-II) 

    With CONSULT-II 

    1. Turn ignition switch to "ON" position. (Do not start engine.)
    2. Select "ECU INPUT SIGNALS" in "DATA MONITOR" mode for "A/T" with CONSULT-II.
    3. Read out ON/OFF switching action of the "MANU MODE SW", "NON M-MODE SW", "UP SW LEVER", "DOWN SW LEVER".

    OK or NG 

    OK >> GO TO  4.

    NG >> GO TO 3.

    Fig 1: Checking Manual Mode Switch Circuit (With CONSULT-II)
    G02021547Courtesy of NISSAN MOTOR CO., U.S.A.
  2. CHECK MANUAL MODE SWITCH CIRCUIT (WITHOUT CONSULT-II) 

    Without CONSULT-II 

    Drive vehicle in the manual mode, and confirm that the actual gear position and the meter's indication of the position mutually coincide when the selector lever is shifted to the "+ (up)" or "- (down)" side (1st => 5th gear).

    OK or NG 

    OK >> GO TO  4.

    NG >> GO TO 3.

  3. DETECT MALFUNCTIONING ITEM 

    Check the following items.

    • Power supply. Refer to "COMBINATION METERS ".
    • Manual mode switch. Refer to "COMPONENT INSPECTION ".
    • Pin terminals for damage or loose connection with harness connector.
    • Open circuit or short to ground or short to power in harness or connector for A/T device (manual mode switch).

    OK or NG 

    OK >> GO TO 4.

    NG >> Repair or replace damaged parts.

  4. CHECK DTC 

    Perform DTC confirmation procedure. Refer to "DTC CONFIRMATION PROCEDURE ".

    OK or NG 

    OK >> INSPECTION END 

    NG >> Replace the control device assembly.