AMBIENT TEMPERATURE WARNING ALARM
id092200020600
Purpose
• The ambient temperature warning alarm warns the user when the ambient temperature is 4°C {39°F} or less and the road surface may be frozen.
Function
• When the instrument cluster receives an ambient temperature signal of -19—4°C {-2.2—39°F}, which is sent from the PCM as a CAN signal, it operates the ambient temperature warning alarm.
• After the instrument cluster operates the ambient temperature warning alarm, it does not operate the alarm until it receives an ambient temperature signal of 6°C {43°F} or more.
• The ambient temperature alarm sound pattern is as shown in the figure.
• The Type A instrument cluster operates the ambient temperature warning alarm and displays a message in the LCD simultaneously.
Construction
• The ambient temperature warning alarm sounds using the buzzer built into the instrument cluster.
Operation
1. When the ignition is switched ON, the instrument cluster receives an ambient temperature signal from the PCM (1).
2. When the instrument cluster receives an ambient temperature signal of -19—4°C {-2.2—39°F}, it turns the transistor on (2).
3. When the transistor turns on, the ground circuit of the alarm is established and the alarm sounds (3).
Fail-safe
• Function not equipped.
