Lexus IS250 IS220d GSE20 ALE20 - DOOR LOCK
WIRELESS DOOR LOCK CONTROL SYSTEM - DIAGNOSIS SYSTEM
| DESCRIPTION |
The main body ECU RH controls the functions of the wireless door lock control system on the vehicle. Wireless door lock control system data can be read in the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the intelligent tester to check for a malfunction and perform repairs.
| DLC3 CHECK |
The vehicle's ECM uses the ISO 15765-4 for communication protocol. The terminal arrangement of the DLC3 complies with ISO 15031-03 and matches the ISO 15765-4 format.
| Symbol | Terminal No. | Name | Reference terminal | Result | Condition |
| SIL | 7 | Bus "+" line | 5-Signal ground | Pulse generation | During transmission |
| CG | 4 | Chassis ground | Body ground | 1 Ω or less | Always |
| SG | 5 | Signal ground | Body ground | 1 Ω or less | Always |
| BAT | 16 | Battery positive | Body ground | 9 to 14 V | Always |
Connect the cable of the intelligent tester to the DLC3, turn the engine switch on (IG) and attempt to use the intelligent tester. If the screen displays a communication error message, a problem exists in the vehicle side or with the tester side.
| CHECK BATTERY VOLTAGE |
If voltage is below 11 V, replace the battery.
- Voltage:
- 11 to 14 V