Lexus IS250 IS220d GSE20 ALE20 - STEERING COLUMN
POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM - FAIL-SAFE CHART
- HINT:
- If the power voltage to the ECU returns to normal within 10 seconds during tilt or telescopic operation, the operation will be resumed. If it returns to normal after 10 seconds have elapsed, the operation restarts when a tilt or telescopic operation signal is again input to the ECU.
| DTC No. | Detection Item | Fail-safe |
| B2602 | Key Unlock Warning Switch Circuit Malfunction | Auto away function stops. Auto return function: Continues (when the engine switch is on (IG)) Stops (when the engine switch is off) |
| B2606 | Key Code Confirm Signal Malfunction | Auto away or auto return function stops. |
| B2610 | Tilt Position Sensor or Tilt Motor Circuit Malfunction | Tilt operation is suspended. |
| B2611 | Telescopic Position Sensor or Telescopic Motor Circuit Malfunction | Telescopic operation is suspended. |
| B2620 | ECU Power Source Circuit Malfunction | Tilt and telescopic operations is suspended. |
| B2624 | Speed Signal Malfunction | Auto away and/or auto return function stops. |
- HINT:
- If the communication of an ECU related to this system is interrupted, the ECU effects the controls listed below. (Example: When the windshield wiper switch assembly (combination switch ECU) is defective, manual operation is not available but the auto away / return and position memory functions can operate.)
| Tilt and Telescopic Operation | Main Body ECU RH (Cowl Side J/B RH) | Front Power Seat Switch LH (Position Control ECU) | Windshield Wiper Switch Assembly (Combination Switch ECU) | Multiplex Communication Interruption |
| Manual | ○ (Engine switch on (IG)) | ○ | X | X |
| Auto away / return | X | ○ | ○ | X |
| Position memory (Memorization) (*1) | X | X | ○ | X |
| Position memory (Reproduction) (*1) | ○ (Engine switch on (IG)) | X | ○ | X |
○: Operate
X: Not operate
*1: with Seat position memory
LEXUS IS250, IS220d / GSE20 ALE20