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D3 Switch Circuit Troubleshooting

  1. Turn the ignition switch to LOCK (0).
  2. Remove the shift lever, and disconnect the D3 switch/shift lock solenoid/park pin switch connector (see SHIFT LEVER REMOVAL ).
  3. Check for continuity between D3 switch/shift lock solenoid/park pin switch connector terminals No. 3 and No. 4 while pressing the D3 button and when the button is released.
    Fig 1: Checking Continuity Between D3 Switch/Shift Lock Solenoid/Park Pin Switch Connector Terminals No. 3 And 4
    G06628946Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity while pressing the D3 button, and no continuity when the button is released? 

    YES  -Go to step 4.

    NO  -Replace the D3 switch (see D3 SWITCH TEST/REPLACEMENT ).

  4. Turn the ignition switch to ON (II).
  5. Shift to D.
  6. Measure the voltage between D3 switch/shift lock solenoid/park pin switch connector terminal No. 4 and body ground.
    Fig 2: Measuring Voltage Between D3 Switch/Shift Lock Solenoid/Park Pin Switch Connector Terminal No. 4 And Body Ground
    G06628947Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there battery voltage? 

    YES  -Repair open in the wire between D3 switch/shift lock solenoid/park pin switch connector terminal No. 3 and body ground (G401), or repair poor body ground (G401).

    NO  -Go to step 7.

  7. Turn the ignition switch to LOCK (0).
  8. Jump the SCS line with the HDS.
  9. Disconnect PCM connector A (49P).
  10. Check for continuity between D3 switch/shift lock solenoid/park pin switch connector terminal No. 4 and body ground.
    Fig 3: Checking Continuity Between D3 Switch/Shift Lock Solenoid/Park Pin Switch Connector Terminal No. 4 And Body Ground
    G06628948Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Repair short in the wire between PCM connector terminal A17 and the D3 switch/shift lock solenoid/park pin switch connector.

    NO  -Go to step 11.

  11. Check for continuity between D3 switch/shift lock solenoid/park pin switch connector terminal No. 4 and PCM connector terminal A17.
    Fig 4: Checking Continuity Between D3 Switch/Shift Lock Solenoid/Park Pin Switch Connector Terminal No. 4 And Pcm Connector Terminal A17
    G06628949Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Check for loose terminal fit in the PCM connectors. If necessary, substitute a known-good PCM (see SUBSTITUTING THE PCM ) and recheck.

    NO  -Repair open in the wire between PCM connector terminal A17 and the D3 switch/shift lock solenoid/park pin switch connector.

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