DTC Troubleshooting

DTC P0705: Short in Transmission Range Switch Circuit (Multiple Shift-position Input)

NOTE:
^ Before you troubleshoot, record all freeze data and any on-board snapshot, and review General Troubleshooting Information.
^ This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

1. Clear the DTC with the HDS.
2. Start the engine.
3. With the brake pedal pressed, move the shift lever through all positions. Stop for at least 1 second in each position, and monitor the OBD status for P0705 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.

Does the HDS indicate FAILED?

YES - Go to step 4.

NO - Intermittent failure, the system is OK at this time. Check for an intermittent short in the wire between the transmission range switch and the PCM. If the HDS indicates NOT COMPLETED, return to step 2 and recheck.

4. Turn the ignition switch to LOCK (0).
5. Disconnect the transmission range switch connector.
6. Turn the ignition switch to ON (II).
7. Check the ATP P, ATP R, ATP N, ATP D, ATP D3, ATP 2, ATP FWD, and ATP RVS inputs with the HDS in the A/T data list.

Are there any ON-inputs?

YES - Repair short in the ON-input circuit:

^ ATP P circuit: between PCM connector terminal A16 and transmission range switch connector terminal No. 7.
^ ATP R circuit: between PCM connector terminal C25 and transmission range switch connector terminal No. 8.
^ ATP N circuit: between PCM connector terminal C26 and transmission range switch connector terminal No. 3.
^ ATP D circuit: between PCM connector terminal C17 and transmission range switch connector terminal No. 9.
^ ATP D3 circuit: between PCM connector terminal C46 and transmission range switch connector terminal No. 4.
^ ATP 2-1 circuit: between PCM connector terminal C35 and transmission range switch connector terminal No. 10.
^ ATP FWD circuit: between PCM connector terminal C18 and transmission range switch connector terminal No. 5.
^ ATP RVS circuit: between PCM connector terminal C19 and transmission range switch connector terminal No. 2.

Go to step 15 after repairing the circuit.

NO - Go to step 8.

8. Turn the ignition switch to LOCK (0).
9. Inspect the transmission range switch.

Is the test result OK?

YES - Connect the transmission range switch connector, then go to step 10.

NO - Replace the transmission range switch, then go to step 15.

10. Update the A/T software in the PCM if it does not have the latest software, or substitute a known-good PCM.
11. Start the engine.
12. With the brake pedal pressed, move the shift lever through all positions. Stop for at least 1 second in each position.
13. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0705 indicated?

YES - Check for poor connections and loose terminals at the transmission range switch and the PCM. If the PCM was updated, substitute a known-good PCM, then recheck. If the PCM was substituted, go to step 1.

NO - Go to step 14.

14. Monitor the OBD status for P0705 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.

Does the HDS indicate PASSED?

YES - If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM. If any other DTCs were indicated on step 13, go to the indicated DTC's troubleshooting.

NO - Check for poor connections and loose terminals at the transmission range switch and the PCM. If the PCM was updated, substitute a known-good PCM, then recheck. If the PCM was substituted, go to step 1. If the HDS indicates NOT COMPLETED, return to step 11 and recheck.

15. Clear the DTC with the HDS.
16. Start the engine.
17. With the brake pedal pressed, move the shift lever through all positions. Stop for at least 1 second in each position.
18. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0705 indicated?

YES - Check for poor connections and loose terminals at the transmission range switch and the PCM, then return to step 16 and recheck.

NO - Go to step 19.

19. Monitor the OBD status for P0705 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.

Does the HDS indicate PASSED?

YES - Troubleshooting is complete. If any other DTCs were indicated on step 18, go to the indicated DTC's troubleshooting.

NO - Check for poor connections and loose terminals at the transmission range switch and the PCM, then go to step 1. If the HDS indicates NOT COMPLETED, return to step 16 and recheck.