The driver's door lock motor is built into the driver's door lock assembly.

The main body ECU RH controls the driver's door lock motor to lock/unlock the driver's door. This ECU applies current from terminal ACT+ to terminal ACTD to operate the motor to lock the door. It reverses the direction of the current flow to operate the motor to unlock the door.

The rear right side door unlock detection switch is built into the rear right side door lock assembly. The switch turns on when the rear right side door is locked and turns off when the door is unlocked.

The main body ECU RH is connected to the rear right side door lock assembly via terminal LSWR and rear right side door lock/unlock state signals are input to the ECU.

The rear left side door unlock detection switch is built into the rear left side door lock assembly. The switch turns on when the rear left side door is locked and turns off when the door is unlocked.

The main body ECU RH is connected to the rear left side door lock assembly via terminal LSWL and rear left side door lock/unlock state signals are input to the ECU.

The front passenger door unlock detection switch is built into the front passenger door lock assembly. The switch turns on when the front passenger door is locked and turns off when the door is unlocked.

The main body ECU RH is connected to the front passenger door lock assembly via terminal LSWP and front passenger door lock/unlock state signals are input to the ECU.

The driver's door unlock detection switch is built into the driver's door lock assembly. The switch turns on when the driver's door is locked and turns off when the door is unlocked.

The multiplex network master switch assembly is connected to the driver's door lock assembly via terminal LSW and driver's door lock/unlock state signals are input to the multiplex network master switch assembly.

If the collision door lock release function does not operate normally, or an open or short in the GWS input circuit of the main body ECU RH (cowl side J/B RH) is detected, DTC B1243 will be output.

Lexus IS250 IS220d GSE20 ALE20 DOOR LOCK

Connect the intelligent tester to the DLC3.

Connect the intelligent tester to the DLC3.

Power door lock control system data and Diagnostic Trouble Codes (DTCs) can be read through the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the intelligent tester to check for malfunctions and perform repairs.