LOW FUEL WARNING LIGHT

id092200023000


Purpose

•  The low fuel warning light warns the driver that the remaining fuel level is low.

Functions

•  The instrument cluster calculates the remaining fuel amount based on the following signals, and if the calculated remaining fuel amount is approx. 11 L {2.9 US gal, 2.4 Imp gal} (fuel gauge indicates remaining 2 segments), it turns the low fuel warning light on.

Signal name

Sending module/part name

Communication method
Fuel gauge sender unit voltage signal
Rear body control module (RBCM)
MS-CAN
Fuel injection amount signal
PCM
HS-CAN
Vehicle speed signal


Structure/Construction

•  The low fuel warning light is built into the instrument cluster.
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•  A warning message in the center display is displayed when the low fuel warning light is turned on. For the message content and verification method, refer to the [CENTER DISPLAY]. (See CENTER DISPLAY [WITH CENTER DISPLAY].)
•  For vehicles with the multi-information display, a warning message is displayed in the multi-information display. For the message content and verification method, refer to the [MULTI-INFORMATION DISPLAY]. (See MULTI-INFORMATION DISPLAY.)

Operation

1.  When the instrument cluster receives (1) the fuel gauge sender unit voltage signal from the rear body control module (RBCM), and the fuel injection amount and vehicle speed signals from the PCM via CAN communication while the ignition is switched ON (engine off or on), it calculates (2) the remaining fuel amount based on each signal.

2.  The instrument cluster turns the transistor on (3) if the remaining fuel amount calculated based on each signal is approx. 11 L {2.9 US gal, 2.4 Imp gal}.

3.  When the transistor turns on, a ground circuit with the low fuel warning light is established and the low fuel warning light turns on (4).

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Fail-safe

•  Not applicable