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Home >> Nissan-Datsun >> 2007 >> Sentra SE-R >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Continuously Variable Transmission (CVT) >> DTC P1701 Transmission Control Module (Power Supply) >> Diagnostic Procedure
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Diagnostic Procedure

  1. CHECK DTC 
    1. Turn ignition switch ON.
    2. Select "SELF-DIAG RESULTS" mode for "TRANSMISSION" with CONSULT-III.
    3. Erase self-diagnostic results. Refer to "HOW TO ERASE DTC (WITH CONSULT-III) ".
    4. Turn ignition switch OFF, and wait for 5 seconds or more.
    5. Start engine.
    6. Confirm self-diagnostic results again. Refer to "SELF-DIAGNOSTIC RESULT MODE ".

    Is the "P1701 TCM-POWER SUPPLY" displayed? 

    YES: GO TO 2.

    NO: INSPECTION END 

  2. CHECK TCM POWER SOURCE, STEP 1 
    1. Turn ignition switch OFF.
    2. Check voltage between TCM connector terminal and ground.
      VOLTAGE SPECIFICATION CHART

      Name Connector Terminal Condition Voltage (Approx.)
      Power supply (memory back-up) F23 45 - Ground Always Battery voltage
      47 - Ground

    OK or NG 

    OK: GO TO 3.

    NG: GO TO  4.

  3. CHECK TCM POWER SOURCE, STEP 2 
    1. Turn ignition switch ON.
    2. Check voltage between TCM connector terminals and ground.
      VOLTAGE SPECIFICATION CHART

      Name Connector Terminal Condition Voltage (Approx.)
      Power supply F23 46 - Ground
      G04927067
      		 Battery voltage
      G04927068
      		 0 V
      Power supply 48 - Ground
      G04927069
      		 Battery voltage
      G04927070
      		 0 V
      Power supply (memory back-up) 45 - Ground Always Battery voltage
      47 - Ground

    OK or NG 

    OK: GO TO  5.

    NG: GO TO 4.

  4. DETECT MALFUNCTIONING ITEM 

    Check the following.

    • Harness for short or open between battery and TCM connector terminal 45, 47
    • Harness for short or open between ignition switch and TCM connector terminal 46, 48
    • 10 A fuse (No.49, located in the IPDM E/R)
    • 20 A fuse (No.53, located in the IPDM E/R)
    • Ignition switch. Refer to "POWER SUPPLY ROUTING CIRCUIT ".

    OK or NG 

    OK: GO TO 5.

    NG: Repair or replace damaged parts.

  5. CHECK TCM GROUND CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect TCM connector.
    3. Check continuity between TCM connector terminals and ground.
      CONTINUITY REFERENCE CHART

      Name Connector Terminal Continuity
      Ground F23 5 - Ground Yes
      42 - Ground

    OK or NG 

    OK: GO TO 6.

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

  6. CHECK DTC 

    Perform "DTC CONFIRMATION PROCEDURE ".

    OK or NG 

    OK: INSPECTION END 

    NG: GO TO 7.

  7. CHECK TCM 
    1. Check TCM input/output signals. Refer to "TCM INPUT/OUTPUT SIGNAL REFERENCE VALUES ".
    2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector.

    OK or NG 

    OK: INSPECTION END 

    NG: Repair or replace damaged parts.

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