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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 421 (Automatic Transaxle - Re4F04B) >> DTC Batt/Fluid Temp Sen (A/T Fluid Temp Sensor Circuit And TCM Power Source) >> Diagnostic Procedure >> 3. Check TCM Power Source Step 1

3. Check TCM Power Source Step 1

WARNING: This page is about a different car, the 2004 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition switch to ON position. (Do not start engine.)
  2. Check voltage between TCM harness connectors F56, F57 terminals 10 (Y), 19 (Y), 28 (Y/R) and ground.

    Voltage :Battery voltage 

    Fig 1: Check TCM Power Source Step 1
    G00779829Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

  1. OK : GO TO 4.
  2. NG : GO TO 5 .
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