D3 Switch Circuit Troubleshooting

D3 Switch Circuit Troubleshooting
1. Turn the ignition switch ON (II).
2. Shift to the D position and select D3 driving mode by pressing the D3 switch, and watch the D3 indicator.
Does the D3 indicator come on?
YES - The system is OK at this time.
NO - Go to step 3.
3. Turn the ignition switch OFF.
4. Check the multiplex control system DTCs.
Are any DTCs indicated?
YES - Troubleshoot the DTC, then recheck.
NO - Go to step 5.
5. Turn the ignition switch OFF.
6. Disconnect the D3 switch/shift lock solenoid/park pin switch connector.





7. Check for continuity between D3 switch/shift lock solenoid/park pin switch connector terminal No. 5 and No. 6.
Is there continuity while pressing the D3 switch and no continuity when the D3 switch is released?
YES - Go to step 8.
NO - Replace the D3 switch.
8. Turn the ignition switch ON (II).
9. Shift to the D position and select D3 driving mode by pressing the D3 switch.





10. Measure the voltage between D3 switch/shift lock solenoid/park pin switch connector terminal No. 6 and body ground.
Is there battery voltage?
YES - Repair open in the wire between D3 switch/shift lock solenoid/park pin switch connector terminal No. 5 and ground (G451), or repair poor ground (G451).
NO - Go to step 11.





11. Measure the voltage between PCM connector terminal D3 and body ground.
Is there battery voltage?
YES - Repair open or short in the wire between PCM connector terminal D3 and D3 switch/shift lock solenoid/park pin switch connector.
NO - Check for loose terminal fit in the PCM connectors. If necessary, substitute a known-good PCM and recheck.