Fail-Safe Chart [08/2015 - 08/2019]
HINT:
If the power source voltage to the tilt and telescopic 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 tilt and telescopic ECU.
FAIL-SAFE OPERATION
| DTC Code | Detection Item | Fail-safe Operation |
|---|---|---|
| B2603 | Tilt and Telescopic Switch Circuit Malfunction | The tilt and telescopic operation using the switch is suspended. |
| B2610 | Tilt Position Sensor or Tilt Motor Circuit Malfunction | The tilt operation is suspended. |
| B2611 | Telescopic Position Sensor or Telescopic Motor Circuit Malfunction | The telescopic operation is suspended. |
| B2620 | ECU Power Source Circuit Malfunction | The tilt and telescopic operation is suspended. |
| B2621 | Communication Interruption | The tilt and telescopic operation is limited depending on which ECU has lost communication. For details, refer to Fail-safe Function. |
| B2624 | Vehicles Speed Malfunction | The auto away and/or auto return function stops. |
- FAIL-SAFE FUNCTION
- If a malfunction in the tilt position sensor signal or telescopic position sensor signal occurs while operating the power tilt or power telescopic function, the multiplex tilt and telescopic ECU stops the operation of the power tilt and power telescopic steering column system.
- If the power source voltage to the ECU drops below approximately 8 V while operating the power tilt or power telescopic function, the ECU stops the operation of the power tilt and power telescopic steering column system.
- If the ECU detects that the motor has locked during the operation of the power tilt or power telescopic function, the ECU stops the operation of the power tilt and power telescopic steering column system.
- If the communication of an ECU that is related to the power tilt and power telescopic steering column system is interrupted, the control of functions by the multiplex tilt and telescopic ECU is limited as shown in the table below.
Tilt and Telescopic Operation Main Body ECU Communication Interruption Front Power Seat Switch (Position Control ECU) Communication Interruption All ECUs*1 Communication Interruption Manual ◦*2 ◦ X*2 Auto away/return X ◦ X Position memory (Memorization) X X X Position memory (Recall) X X X HINT:
- ◦: Operates
X: Does not operate
- *1: All ECUs that are related to the power tilt and power telescopic steering column system.
- *2: The operation is permitted if the engine switch is on (IG) while the signal from the main body ECU is interrupted. The operation is prohibited if the engine switch is off while the signal from the main body ECU is interrupted.