D3 Switch Circuit Troubleshooting

D3 Switch Circuit Troubleshooting

1. Remove the shift lever. A/T Shift Lever Removal

2. Turn the ignition switch to ON (II).

3. Measure the voltage between D3 switch/park pin switch/A/T gear position indicator panel light connector terminals No. 5 and No. 6.

Is there about 5 V?
YES - Go to step 10.

NO - Go to step 4.






4. Measure the voltage between D3 switch/park pin switch/A/T gear position indicator panel light connector terminal No. 5 and body ground.

Is there about 5 V?
YES - Repair open in the wire between D3 switch/park pin switch/A/T gear position indicator panel light connector terminal No. 6 and body ground (G503), and repair poor body ground (G503).

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 (44P).

8. Check for continuity between PCM connector terminal A41 and D3 switch/park pin switch/A/T gear position indicator panel light connector terminal No. 5.

Is there continuity?
YES - Go to step 9.

NO - Repair open in the wire between PCM connector terminal A41 and the D3 switch/park pin switch/A/T gear position indicator panel light connector.






9. Check for continuity between D3 switch/park pin switch/A/T gear position indicator panel light connector terminal No. 5 and body ground.

Is there continuity?
YES - Repair short in the wire between PCM connector terminal A41 and the D3 switch/park pin switch/A/T gear position indicator panel light connector.

NO - Check for loose or poor connection at PCM connector terminal A41. If the connection is OK, substitute a known-good PCM How to Troubleshoot A/T Systems and recheck. If the symptom goes away with a known-good PCM, replace the original PCM. A/T Road Test






10. Check for continuity between D3 switch/park pin switch/A/T gear position indicator panel light connector terminals No. 5 and No. 6 while pressing the D3 switch several times.

Is there alternating continuity and no continuity every time the switch is pushed?
YES - Check for loose or poor connection at PCM connector terminal A41. If the connection is OK, substitute a known-good PCM How to Troubleshoot A/T Systems and recheck. If the symptom goes away with a known-good PCM, replace the original PCM. Service and Repair

NO - Replace the D3 switch. Service and Repair