High Water Temperature Warning Lamp
DESIGN/PURPOSE
The state of engine coolant temperature is informed to the driver.
- The high water temperature warning lamp (red) turns ON when engine coolant temperature is high (overheat).
BULB CHECK
The high water temperature warning lamp turns ON for 1 second after turning ON the ignition switch. After that, the low water temperature indicator lamp turns ON for 1 second.
OPERATION AT COMBINATION METER CAN COMMUNICATION CUT-OFF OR UNUSUAL SIGNAL
For the operation for CAN communications blackout or abnormal signal reception, refer to Fail-Safe .
SYSTEM DIAGRAM
SIGNAL PATH
- ECM reads a signal transmitted from the engine coolant temperature sensor and transmits the signal to the combination meter via CAN communication.
- Combination meter shows/hides the high water temperature warning on the information display according to the signal from ECM.
LIGHTING CONDITION
High Water Temperature Warning Lamp
When any of the following conditions is satisfied:
- Ignition switch: ON
- Engine coolant temperature: 114°C (237°F) or more
SHUTOFF CONDITION
High Water Temperature Warning Lamp
When any of the following conditions is satisfied:
- Ignition switch: OFF
- Engine coolant temperature: 108°C (226°F) or less
TIMING CHART