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D3 Switch Circuit Troubleshooting

D3 Switch Circuit Troubleshooting
1. Remove the shift lever.
2. Turn the ignition switch 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 ground (G503), and repair poor ground (G503).
NO - Go to step 5.

5. Turn the ignition switch OFF.
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 and recheck. If the symptom goes away with a known-good PCM, replace the original PCM.

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 and recheck. If the symptom goes away with a known-good PCM, replace the original PCM.
NO - Replace the D3 switch.
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