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CVT model

  1. Turn the ignition switch ON (II).
  2. Look at the A/T gear position indicator and select each position.

    Does the indicator light properly ? 

    1. YES  -Go to step 3.
    2. NO  -Do the A/T gear position indicator input test (see INDICATOR INPUT TEST ).
  3. Turn the ignition switch OFF.
  4. Remove the gauge assembly from the dashboard (see GAUGE ASSEMBLY REPLACEMENT ). Disconnect the gauge assembly 10P connector.
  5. Disconnect TCM connector A (26P).
  6. Turn the ignition switch ON (II).
  7. Measure voltage between ECM connector terminals B14 and B20 with the transmission not in N or P position.
    Fig 1: Measuring Voltage Between ECM Connector Terminals B14 And B20
    G03680996Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there battery voltage ? 

    1. YES  -Go to step  11.
    2. NO  -Go to step 8.
  8. Turn the ignition switch OFF.
  9. Disconnect ECM connector B (25P), and wait for 10 seconds.
  10. Check for continuity between ECM connector terminal B14 and body ground.
    Fig 2: Checking Continuity Between ECM Connector Terminal B14 And Body Ground
    G03680997Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity ? 

    1. YES  -Repair short in the wire between the ECM (B14) and the A/T gear position switch, the TCM (A10), or the gauge assembly.
    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 ).
  11. Turn the ignition switch OFF.
  12. Reconnect the gauge assembly 10P connector.
  13. Reconnect TCM connector A (26P).
  14. Turn the ignition switch ON (II).
  15. Measure voltage between ECM connector terminals B14 and B20 with the transmission in N or P position.
    Fig 3: Measuring Voltage Between ECM Connector Terminals B14 And B20
    G03680998Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there less than 1.0 V ? 

    1. YES  -Go to step 16.
    2. NO  -Repair open in the wire between the ECM (B14) and the A/T gear position switch.
  16. Measure voltage between ECM connector terminals B16 and B20 with the transmission in D position.
    Fig 4: Identifying ECM Connector Terminals B16 And B20
    G03680999Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there less than 1.0 V ? 

    1. YES  -Go to step 17.
    2. NO  -Repair open in the wire between the ECM (B16) and the A/T gear position switch.
  17. Measure voltage between ECM connector terminals B16 and B20 with the transmission in N or P position.
    Fig 5: Measuring Voltage Between ECM Connector Terminals B16 And B20
    G03681000Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there battery voltage ? 

    1. YES  -Go to step 18.
    2. NO  -Repair short in the wire between the ECM (B16) and the A/T gear position switch.
  18. Measure voltage between ECM connector terminals B20 and B24 with the transmission in R position.
    Fig 6: Measuring Voltage Between ECM Connector Terminals B20 And B24
    G03681001Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there less than 1.0 V ? 

    1. YES  -Go to step 19.
    2. NO  -Repair open in the wire between the ECM (B24) and the A/T gear position switch.
  19. Measure voltage between ECM connector terminals B20 and B24 with the transmission in N or P position.
    Fig 7: Identifying ECM Connector Terminals
    G03681002Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there battery voltage ? 

    1. YES  -The A/T gear position signal is OK.
    2. NO  -Repair short in the wire between the ECM (B24) and the A/T gear position switch.
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