Coolant temperature, Trionic T7
| Coolant temperature, Trionic T7 |
The coolant temperature gauge gives the driver information on engine coolant temperature. The main instrument unit controls the coolant temperature gauge and supplies it with current.
The temperature sensor is connected to the Trionic T7 which continuously sends coolant temperature information on the bus. The main instrument unit obtains coolant temperature information via the bus.
The coolant temperature gauge's scale is divided into 5 fixed breakpoints. The main instrument unit is programmed to move the gauge needle to the fixed breakpoints at certain specific temperatures to give a steady reading at normal coolant temperatures.
The following breakpoints are programmed in the main instrument unit (factory setting):
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Gauge needle:
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Coolant temperature
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-into "blue" zone
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30°C (fixed value)
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-out of "blue" zone
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50°C
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-into "horizontal" position
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80°C
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-out of "horizontal" position
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115°C
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-into "red" zone
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129°C
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-out of "red" zone
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130°C (fixed value)
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Diagnostics
A break/short circuit generates diagnostic trouble code B1715 and the coolant temperature sensor bottoms.This project is supported by memberships and donations. If you use this site, please consider Joining SCNA and/or making a donation.
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