FAIL-SAFE CHART 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
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 operation of the power tilt and power telescopic steering column system. (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 steering column system. (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 steering column system. (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.
HINT:
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Toyota Tundra Service Manual > Sfi System: Definition Of Terms
DEFINITION OF TERMS Term Definition Monitor Description Description of what ECM monitors and how it detects malfunctions (monitoring purpose and details). Related DTCs Group of diagnostic trouble codes output by ECM based on same malfunction detection logic. Typical Enabling Conditions Preconditions ...