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D3 Switch Circuit Troubleshooting

  1. Remove the shift lever assembly (see SHIFT LEVER REMOVAL  ).
  2. Turn the ignition switch to ON (II).
  3. Measure the voltage between A/T gear position indicator panel light harness/park pin switch/D3 switch connector terminals No. 5 and No. 6.
    Fig 1: Measuring Voltage Between A/T Gear Position Indicator Panel Light Harness Switch Connector Terminals No. 5 And No. 6
    G08087413Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there battery voltage? 

    YES  -Go to step  10.

    NO  -Go to step 4.

  4. Measure the voltage between A/T gear position indicator panel light harness/park pin switch/D3 switch connector terminal No. 5 and body ground.
    Fig 2: Measuring Voltage Between A/T Gear Position Indicator Panel Light Switch Connector Terminal No. 5 And Body Ground
    G08087414Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there battery voltage? 

    YES  -Repair an open in the wire between A/T gear position indicator panel light harness/park pin switch/D3 switch connector terminal No. 6 and body ground (G403), and repair poor body ground (G403).

    NO  -Go to step 5.

  5. Turn the ignition switch to LOCK (0).
  6. Jump the SCS line with the HDS.
  7. Disconnect PCM connector A (49P).
  8. Check for continuity between PCM connector terminal A17 and A/T gear position indicator panel light harness/park pin switch/D3 switch connector terminal No. 5.
    Fig 3: Checking Between PCM Connector Terminal A17 And A/T Gear Position Indicator Light Connector No. 5
    G08087415Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Go to step 9.

    NO  -Repair an open in the wire between PCM connector terminal A17 and the A/T gear position indicator panel light harness/park pin switch/D3 switch connector.

  9. Check for continuity between A/T gear position indicator panel light harness/park pin switch/D3 switch connector terminal No. 5 and body ground.
    Fig 4: Checking Between A/T Gear Indicator Panel Light Harness Switch Connector Terminal No. 5 And Body Ground
    G08087416Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Repair a short in the wire between PCM connector terminal A17 and the A/T gear position indicator panel light harness/park pin switch/D3 switch connector.

    NO  -Check for loose or poor connection at PCM connector terminal A17. If the connection is OK, substitute a known-good PCM (see SUBSTITUTING THE PCM ), and recheck. If the symptom goes away with a known-good PCM, replace the original PCM (see PCM REPLACEMENT ).

  10. Check for continuity between A/T gear position indicator panel light harness/park pin switch/D3 switch connector terminals No. 5 and No. 6 while pressing the D3 button several times.
    Fig 5: Checking Between A/T Gear Position Indicator Light Harness Connector Terminals No. 5 And No. 6
    G08087417Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity every time the switch is pushed and no continuity when released? 

    YES  -Check for loose or poor connection at PCM connector terminal A17. If the connection is OK, substitute a known-good PCM (see SUBSTITUTING THE PCM ), and recheck. If the symptom goes away with a known-good PCM, replace the original PCM (see PCM REPLACEMENT ).

    NO  -Replace a new shift lever knob (see SHIFT LEVER KNOB REPLACEMENT  ).

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