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Home >> Honda >> 2002 >> Insight Automatic CVT >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Continuously Variable Automatic Transmission (CVT) >> CVT >> DTC Troubleshooting >> DTC P0725: Problem in Engine Speed Input Circuit >> 2001-2004 Models

2001-2004 Models

NOTE:
  • Record all freeze data and review General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ) before you troubleshoot.
  • This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.
  1. Start the engine, and check the tachometer for proper operation.

    Does the tachometer operate properly? 

    1. YES  -Go to step 2.
    2. NO  -Check the wire between gauge assembly connector terminal A5 and ECM connector terminal A19. If the wire is OK, check the gauge assembly or ECM.
  2. Turn the ignition switch OFF.
  3. Disconnect TCM connector A (26P).
  4. Start the engine.
  5. Measure the voltage between TCM connector terminals A5 and A4.
    Fig 1: Measuring Voltage Between TCM Connector A (26P) Terminals A5 And A4
    G03681753Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there voltage? 

    1. YES  -Check for loose terminal fit in the TCM connectors. If necessary, substitute a known-good TCM (see HOW TO TROUBLESHOOT CIRCUIT AT THE TCM ) and recheck.
    2. NO  -Repair an open in the wire between TCM connector terminal A5 and ignition coil.