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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 658 (Automatic Transmission - Sedan) >> DTC P1701: Transmission Control Module (Power Supply) >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2003 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK TCM POWER SOURCE, STEP 1 
    1. Turn ignition switch OFF. (Do not start engine.)
    2. Check voltage between TCM terminal and ground.
    Fig 1: Identifying TCM Terminal And Ground Voltage Table
    G02157652Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 2: Checking Voltage Between TCM Terminal And Ground
    G02157653Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK : GO TO 2.
    2. NG : GO TO  3.
  2. CHECK TCM POWER SOURCE, STEP 2 
    1. Turn ignition switch ON.
    2. Check voltage between TCM terminal and ground.
    Fig 3: Identifying TCM Terminal And Ground Voltage Table
    G02157654Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 4: Checking Voltage Between TCM Terminal And Ground
    G02157655Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK : GO TO  4.
    2. NG : GO TO 3.
  3. DETECT MALFUNCTIONING ITEM 

    Check the following items:

    • Harness for short or open between battery and TCM terminal 9
    • Harness for short or open between ignition switch and TCM terminals 2, 3, 33 and 42
    • Harness for short or open between IPDM E/R terminal 33 and A/T PV IGN relay terminals 2
    • Harness for short or open between A/T PV IGN relay terminal 1 and ground.
    • 15A fuse (No.34, located in the fuse and fusible link block) and 10A fuse (No. 71, located in the IPDM E/R)
    • Ignition switch
    • A/T PV IGN relay; Refer to "COMPONENT INSPECTION "
    • ECM relay

    OK or NG 

    1. OK : GO TO 4.
    2. NG : Repair or replace damaged parts.
  4. CHECK TCM GROUND CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect TCM harness connector.
    3. Check continuity between TCM terminals 5, 14, 24, 46 and ground.
    1. Continuity should exist. 

    If OK, check harness for short to ground and short to power.

    OK or NG 

    1. OK : GO TO 5.
    2. NG : Repair open circuit or short to ground or short to power in harness or connectors.
    Fig 5: Checking Continuity Between TCM Terminals 5, 14, 24, 46 And Ground
    G02157656Courtesy of NISSAN MOTOR CO., U.S.A.
  5. CHECK DTC 

    Check again. Refer to "DTC CONFIRMATION PROCEDURE ".

    OK or NG 

    1. OK : INSPECTION END 
    2. NG : GO TO 6.
  6. PERFORM TCM INSPECTION 
    1. Perform TCM input/output signal inspection. Refer to "TCM INPUT/OUTPUT SIGNAL REFERENCE VALUES ".
    2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.

    OK or NG 

    1. OK : INSPECTION END 
    2. NG : Repair or replace damaged parts.
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