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Fail-Safe Operation FAIL-SAFE CHART 1. FAIL-SAFE FUNCTION a. 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 b. 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 c. 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 d. 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. COMMUNICATION CHART DTC Code Detection Item Fail-safe B2602 Key Unlock Warning Switch Circuit The auto away function stops. Auto return Continues (when the ignition switch is Stops (when the ignition switch is OFF). B2603 Tilt and Telescopic Manual Switch Circuit The tilt and telescopic operation by manual B2610 Tilt Position Sensor or Tilt Motor Circuit The tilt operation is suspended. B2611 Telescopic Position Sensor or Telescopic Motor The telescopic operation is suspended. B2620 ECU Power Source Circuit Malfunction The tilt and telescopic operation is suspended. B2624 Speed Signal Malfunction The auto away and/or auto return function Function Main Body ECU Communication Interruption Outer Mirror Control ECU Communication Interruption Front Power Seat Control ECU and Switch LH Communication Interruption All ECUs (*1) Communication Interruption Manual X (*2) o o X (*2) Automatic Away X X o X Automatic X (*3) X (*3) o X (*3)
2009 Toyota Tundra 2009 STEERING Steering Column - Tundra
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