HEATED STEERING WHEEL SYSTEM > FAIL-SAFE CHART
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MALFUNCTION DETECTION
a. Operation when malfunction is detected
Content Operation
When thermistor trouble is detected Heater turns off
When overheating (150°C (302°F)) of controller is detected Heater turns off
When overvoltage (60 V) is detected Heater turns off
When undervoltage (6 V) is detected Heater turns off
After preset time of timer passes (30 min.) Heater turns off
b. Malfunction detection conditions
i. An open or short in the steering wheel thermistor continues for 2 seconds or more.
ii. The steering heater switch is pressed continuously for 10 seconds or more.
c. Malfunction display
i. The LED of the steering heater switch blinks at 0.3 second intervals.
d. Restore condition
i. If the system returns to normal for 2 seconds or more, the previous operation before the malfunction occurred continues. However,
regardless of if a malfunction is detected and the malfunction operation is occurring, or if the system returns to normal, the timer
will turn off the heater 30 minutes after the switch was first turned on.
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