( TL19E00K764000Y1127FAAT00 )

DTC Troubleshooting: B1127

1. Check for continuity between the door multiplex control unit 37P connector No. 28 and No. 29 terminals.

Is there continuity?

YES | - | Repair a short between the LOCK and UNLOCK wires.■
NO | - | Substitute a known-good power window master switch. If the symptom goes away, replace the original power window master switch. If not, replace the driver's door lock actuator.■