DTC B1812: Power Seat Control Unit Lost Communication with Driver's MPCS Unit (MEM SW Message)
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 ON (II).
- Wait for 6 seconds or more.
- Check for DTCs with the HDS.
Is DTC B1812 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 driver's MPCS unit.
- Check for DTCs with the HDS.
Are DTCs B1013, B1015, B1065, B1182, B1356, B1358, and B1905 also indicated?
YES - Do the driver's MPCS unit input test (see DRIVER'S MPCS UNIT INPUT TEST ).
NO - Do the power seat control unit input test (see POWER SEAT CONTROL UNIT INPUT TEST ).