DTC U0199: Lost Communication With P/W (DR Lock SW frame)
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
).
- Clear the DTCs with the HDS.
- Turn the ignition switch to LOCK (0) and then back to ON (II).
- Wait for 6 seconds or more.
- Check for DTCs with the HDS.
Is DTC U0199 indicated?
YES - Go to step 5.
NO - Intermittent failure, the system is OK at this time. Check for loose or poor connections between the power seat control unit and the door multiplex control unit. ■
- From the BODY ELECTRICAL system select menu, select UNIT INFORMATION, and then select CONNECTED UNIT.
Is the power window master switch (door multiplex control unit) detected?
YES - Replace the power seat control unit. ■
NO - Go to step 6.
- Turn the ignition switch to LOCK (0).
- Disconnect the power window master switch 37P connector.
- Disconnect power seat control unit connector B (40P).
- Check for continuity between power seat control unit connector B (40P) terminals No. 39 and No. 40 and the door multiplex control unit 37P connector terminals No. 33 and No. 35 individually.
Is there continuity?
YES - Faulty door multiplex control unit; replace the power window master switch (see POWER WINDOW MASTER SWITCH REPLACEMENT ). ■
NO - Repair an open in the B-CAN wire between the door multiplex control unit and the power seat control unit. ■