D3 Switch Circuit Troubleshooting

Remove the shift lever assembly (see SHIFT LEVER REMOVAL ).
Turn the ignition switch ON (II).
Measure the voltage between A/T gear position indicator panel light harness / park pin switch / D3 switch connector terminals No. 5 and No. 6.
Is there battery voltage?

YES - Go to step 10.

NO - Go to step 4.

Fig 1: Measuring Voltage Between A/T Gear Position Indicator Panel Light Harness & Park Pin Switch
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Measure the voltage between A/T gear position indicator panel light harness / park pin switch / D3 switch connector terminal No. 5 and body ground.
Is there battery voltage?

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

NO - Go to step 5.

Fig 2: Measuring Voltage Between A/T Gear Position Indicator Panel Light Harness & Park Pin Switch
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect PCM connector A (49P).
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.
Is there continuity?

YES - Go to step 9.

NO - Repair 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. ■

Fig 3: Checking Continuity Between PCM Connector Terminal A17 & A/T Gear Position Indicator Panel Light Harness
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check for continuity between A/T gear position indicator panel light harness / park pin switch / D3 switch connector terminal No. 5 and body ground.
Is there continuity?

YES - Repair 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 ). ■

Fig 4: Checking Continuity Between A/T Gear Position Indicator Panel Light Harness & Park Pin Switch
Courtesy of AMERICAN HONDA MOTOR CO., INC.
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 switch several times.
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 the new shift lever knob (see SHIFT LEVER KNOB REPLACEMENT ).

Fig 5: Checking Continuity Between A/T Gear Position Indicator Panel Light Harness & Park Pin Switch
Courtesy of AMERICAN HONDA MOTOR CO., INC.