Lexus IS250 IS220d GSE20 ALE20 - DOOR LOCK
POWER DOOR LOCK CONTROL SYSTEM - PROBLEM SYMPTOMS TABLE
| Symptom | Suspected area | See page |
| All doors cannot be locked/unlocked simultaneously by neither door control switch nor door key cylinder | 1. Power source circuit (Main body ECU RH) | |
| 2. Replace main body ECU RH (Cowl side J/B RH) | - | |
| All doors cannot be locked/unlocked simultaneously by driver side door control switch | 1. Multiplex network master switch assembly | |
| 2. Replace main body ECU RH (Cowl side J/B RH) | - | |
| All doors cannot be locked/unlocked simultaneously by front passenger side door control switch | 1. Door control switch circuit (Front passenger side door) | |
| 2. Replace main body ECU RH (Cowl side J/B RH) | - | |
| All doors cannot be locked/unlocked simultaneously by door key cylinder | 1. Driver side door key lock and unlock switch circuit | |
| 2. Multiplex network master switch assembly | ||
| 3. Replace main body ECU RH (Cowl side J/B RH) | - | |
| Driver side door lock does not operate | 1. Driver side door lock motor circuit | |
| 2. Replace main body ECU RH (Cowl side J/B RH) | - | |
| Passenger side door lock does not operate | 1. Front passenger side door lock motor circuit | |
| 2. Replace main body ECU RH (Cowl side J/B RH) | - | |
| Rear LH side door lock does not operate | 1. Rear door lock motor LH circuit | |
| 2. Replace main body ECU RH (Cowl side J/B RH) | - | |
| Rear RH side door lock does not operate | 1. Rear door lock motor RH circuit | |
| 2. Replace main body ECU RH (Cowl side J/B RH) | - | |
| Key lock-in prevention function does not work properly (manual operation and key-linked lock are active) | 1. Door courtesy switch circuit (Driver side) | |
| 2. Entry and start system | ||
| 3. Replace main body ECU RH (Cowl side J/B RH) | - | |
| One or more doors cannot be locked/unlocked simultaneously (Wireless key operation) | 1. Wireless door lock system | |
| 2. Driver side door unlock detection switch circuit | ||
| 3. Front passenger door unlock detection switch circuit | ||
| 4. Rear door unlock detection switch LH circuit | ||
| 5. Rear door unlock detection switch RH circuit | ||
| 6. Replace main body ECU RH (Cowl side J/B RH) | - | |
| One or more doors cannot be locked/unlocked simultaneously (Theft deterrent operation) | 1. Theft deterrent system (w/ intrusion sensor) | |
| 2. Theft deterrent system (w/ intrusion sensor) | ||
| 3. Driver side door unlock detection switch circuit | ||
| 4. Front passenger door unlock detection switch circuit | ||
| 5. Rear door unlock detection switch LH circuit | ||
| 6. Rear door unlock detection switch RH circuit | ||
| 7. Replace main body ECU RH (Cowl side J/B RH) | - | |
| Double locking system does not operate (All doors) | 1. Door opening relay power source circuit | |
| 2. Replace double door lock ECU | - | |
| 3. Replace main body ECU RH (Cowl side J/B RH) | - | |
| Driver side double lock does not operate | 1. Driver side double lock motor circuit | |
| 2. Replace double door lock ECU | - | |
| Passenger side double lock does not operate | 1. Front passenger side double lock motor circuit | |
| 2. Replace double door lock ECU | - | |
| Rear LH side double lock does not operate | 1. Rear double lock motor LH circuit | |
| 2. Replace double door lock ECU | - | |
| Rear RH side double lock does not operate | 1. Rear double lock motor RH circuit | |
| 2. Replace double door lock ECU | - | |
| Fail-safe for double locking system does not operate | 1. Driver side double lock position switch circuit | |
| 2. Front passenger side double lock position switch circuit | ||
| 3. Rear double lock position switch LH circuit | ||
| 4. Rear double lock position switch RH circuit | ||
| 5. Replace double door lock ECU | - |
LEXUS IS250, IS220d / GSE20 ALE20