DTC B1829: A/T P Signal and VSS Signal Mismatch

NOTE:

If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).
Make sure you have the latest software on the HDS before troubleshooting.

Turn the ignition switch ON (II) and clear the DTCs with the HDS.
Start the engine.
Test drive at 6 mph (10 km/h) for 10 seconds.
Check for DTCs with the HDS.
Is DTC B1829 indicated?

YES - Go to step 5.

NO - Intermittent failure. The system is OK at this time. Check for loose or poor connections and terminal fit at the power seat control unit connector. Check the battery condition, battery cables, and ground G601.
Check the shift position indicator P indicator and MIL.
Do the P indicator and MIL come on?

YES - Troubleshoot the automatic transmission system.

NO - Go to step 6.
Check for gauge control module DTCs with the HDS.
Are there any DTCs indicated?

YES - Troubleshoot the gauge control module.

NO - Replace the power seat control unit.