Fail-Safe Chart [08/2015 - 08/2017]
HINT:
If the power 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 |
|---|---|---|
| B2602 | Key Unlock Warning Switch Circuit Malfunction | Auto away function stops. Auto return function:
|
| B2603 | Tilt and Telescopic Manual Switch Circuit Malfunction | Tilt and telescopic operation by manual switch is suspended. |
| 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 operation is suspended. |
| B2624 | Speed Signal Malfunction | 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 tilt and telescopic ECU stops the operation of the power tilt and power telescopic steering column system.
- If the power 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 tilt and telescopic 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 system operates as shown below.
Function Main Body ECU Communication Interruption Outer Mirror Control ECU Communication Interruption Front Power Seat Control Switch LH Communication Interruption All ECUs*1 Communication Interruption Manual Disable*2 Normal Normal Disable*2 Automatic Away Disable Disable Normal Disable Automatic Return Disable*3 Disable*3 Normal Disable*3 Memory Disable Disable Disable Disable Recall Disable*2 Disable Disable Disable HINT:
- *1: All ECUs that are related to the power tilt and power telescopic steering column system.
- *2: The operation is permitted if the ignition switch signal is ON while the signal from the main body ECU is interrupted.
The operation is prohibited if the ignition switch signal is off while the signal from the main body ECU is interrupted.
- *3: If the signal(s) from the ECU is/are interrupted after the operation has started, the operation will be continued when the ignition switch signal is ON, and prohibited when the ignition switch signal is off.