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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 1588 (Automatic Transmission) >> Overdrive Control Switch >> Diagnostic Procedure
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Diagnostic Procedure

WARNING: This page is about a different car, the 2005 Nissan Frontier. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK CAN COMMUNICATION LINE 

    Perform the self-diagnosis. Refer to "SELF-DIAGNOSTIC RESULT MODE ".

    Is any malfunction in the CAN communication indicated in the results? 

    1. YES: Check CAN communication line. Refer to "DTC U1000 CAN COMMUNICATION LINE ".
    2. NO: GO TO 2.
  2. CHECK OVERDRIVE CONTOROL SWITCH CIRCUIT 

    With CONSULT-II 

    1. Turn ignition switch "ON".
    2. Select "ECU INPUT SIGNALS" in "DATA MONITOR" mode for "A/T" with CONSULT-II.
      Fig 1: CONSULT-II Display - Data Monitor
      G03594942Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Read out "OD CONT SW".

      Check the signal of the overdrive control switch is indicated properly.

      CONSULT-II MONITOR ITEM - OD CONT SW

      Monitor item Condition Display value
      OD CONT SW Releasing overdrive control switch OFF
      Holding overdrive control switch ON

    Without CONSULT-II 

    1. Turn ignition switch "ON". (Do not start engine)
    2. Check voltage between A/T control device connector terminal and ground.
      CONSULT-II MONITOR ITEM - OVERDRIVE CONTROL SWITCH

      Item Connector No. Terminal No. Condition Data (Approx.)
      Overdrive control switch M156 7 - Ground Releasing overdrive control switch Battery voltage
      Holding overdrive control switch 0V

    OK or NG 

    1. OK: GO TO  5.
    2. NG: GO TO 3.
  3. CHECK OVERDRIVE CONTROL SWITCH 
    1. Turn ignition switch "OFF".
    2. Disconnect A/T control device connector.
    3. Check continuity between A/T control device terminals 7 and 8.
      OVERDRIVE CONTROL SWITCH CONTINUITY REFERENCE

      Condition Continuity
      Releasing overdrive control switch No
      Holding overdrive control switch Yes

    OK or NG 

    1. OK: GO TO 4.
    2. NG: Repair or replace overdrive control switch.
  4. DETECT MALFUNCTIONING ITEM 

    Check the following. If any items are damaged, repair or replace damaged parts.

    • Harness for short or open between combination meter connector terminal 20 and A/T control device connector terminal 7.
    • Harness for short or open between A/T control device connector terminal 8 and ground.

    OK or NG 

    1. OK: GO TO 5.
    2. NG: Repair or replace damaged parts.
  5. CHECK COMBINATION METER 

    Check the combination meter. Refer to "HOW TO PROCEED WITH TROUBLE DIAGNOSIS ".

    OK or NG 

    1. OK :INSPECTION END 
    2. NO: Repair or replace damaged parts.
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