CHECK FUEL CAP WARNING LIGHT [SKYACTIV-G 2.0]
Purpose
The check fuel cap warning light warns the driver that the fuel cap may not have been closed securely.
Function
When the PCM stores DTC P0457:00 (PCM detects that fuel cap is open), it sends a check fuel cap warning light illumination request signal to the instrument cluster. For details on the illumination conditions, refer to [DTC DETECTION LOGIC AND CONDITIONS [SKYACTIV-G 2.0]]. (See DTC DETECTION LOGIC AND CONDITIONS [PCM (SKYACTIV-G 2.0)].)
Based on the check fuel cap warning light illumination request signal sent from the PCM via CAN communication, the instrument cluster turns the check fuel cap warning light on.
Construction
The check fuel cap warning light is built into the instrument cluster.
For vehicles with center display, a warning message in the center display is displayed when the check fuel cap warning light is illuminated. For the message content and verification method, refer to the CENTER DISPLAY. (See CENTER DISPLAY [WITH CENTER DISPLAY].)
Operation
1. When the ignition is switched ON (engine off or on), the instrument cluster receives (1) an check fuel cap warning light illumination request signal from the PCM via CAN communication.
2. The instrument cluster turns the transistor on (2) based on the check fuel cap warning light illumination request signal.
3. When the transistor turns on, a ground circuit with the check fuel cap warning light is established and the check fuel cap warning light turns on (3).
Fail-safe
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Not applicable