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CVT model

  1. Check the idle stop switch position.

    Is the position OK ? 

    1. YES  -Go to step 2.
    2. NO  -Check the idle stop switch adjustment (see BRAKE PEDAL AND BRAKE PEDAL POSITION SWITCH/IDLE STOP SWITCH ADJUSTMENT ).
  2. Turn the ignition switch ON (II).
  3. Press the brake pedal.
  4. Measure voltage between ECM connector terminals A31 and B20.
    Fig 1: Identifying ECM Connector Terminals A31 And B20
    G03680990Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there battery voltage ? 

    1. YES  -Go to step 5.
    2. NO  -Go to step  7.
  5. Release the brake pedal.
  6. Measure voltage between ECM connector terminals A31 and B20.
    Fig 2: Measuring Voltage Between ECM Connector Terminals A31 And B20
    G03680991Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there less than 1.0 V ? 

    1. YES  -The idle stop switch signal is OK.
    2. NO  -Go to step  14.
  7. Turn the ignition switch OFF.
  8. Disconnect the idle stop switch 2P connector.
  9. Turn the ignition switch ON (II).
  10. Measure voltage between ECM connector terminals A31 and B20.
    Fig 3: Identifying ECM Connector Terminals
    G03680992Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there battery voltage ? 

    1. YES  -Replace the idle stop switch.
    2. NO  -Go to step 11.
  11. Turn the ignition switch OFF, and wait for 10 seconds.
  12. Disconnect ECM connector A (32P).
  13. Check for continuity between ECM connector terminal A31 and body ground.
    Fig 4: Checking Continuity Between ECM Connector Terminal A31 And Body Ground
    G03680993Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity ? 

    1. YES  -Repair short in the wire between the ECM (A31) and the idle stop switch.
    2. NO  -Update the ECM if it does not have the latest software, or substitute a known-good ECM (see ECM UPDATING AND SUBSTITUTION FOR TESTING-2002-2006 M/T MODELS AND CVT MODEL ), then recheck. If the symptom/ indication goes away with a known-good ECM, replace the original ECM (see ECM REPLACEMENT ).
  14. Turn the ignition switch OFF.
  15. Disconnect the idle stop switch 2P connector.
  16. At the sensor side, check for continuity between idle stop switch 2P connector terminals No. 1 and No. 2.
    Fig 5: Checking Continuity Between IDLE Stop Switch 2P Connector Terminals 1 And 2
    G03680994Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity ? 

    1. YES  -Go to step 17.
    2. NO  -Replace the idle stop switch.
  17. Turn the ignition switch ON (II).
  18. Measure voltage between idle stop switch 2P connector terminal No. 2 and body ground.
    Fig 6: Measuring Voltage Between IDLE Stop Switch 2P Connector Terminal 2 And Body Ground
    G03680995Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there battery voltage ? 

    1. YES  -Repair open in the wire between the idle stop switch and G402.
    2. NO  -Repair open in the wire between the ECM (A31) and the idle stop switch.
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