Honda Fit: Fuel and Emissions System Description - Electronic Throttle Control System
Electronic Throttle Control System
The throttle is electronically controlled by the electronic throttle control system (ETCS). Refer to the system diagram to see a functional layout of the system.
Idle control: When the engine is idling, the ECM/PCM controls the throttle actuator to maintain the proper idle speed according to engine loads.
Acceleration control: When the accelerator pedal is pressed, the ECM/PCM opens the throttle valve depending on the accelerator pedal position (APP) sensor signal.
Cruise control: The ECM/PCM controls the throttle actuator to maintain the set speed when cruise control is operating. The throttle actuator takes the place of the cruise control actuator.
Accelerator Pedal Position (APP) Sensor
As the accelerator pedal position changes, the sensor varies the signal voltage to the ECM/PCM which then controls the throttle position.
Throttle Body
The throttle body is a single-barrel side draft type. To prevent icing of the throttle plate, the lower portion of the throttle valve is heated by engine coolant from the cylinder head.
Electronic Throttle Control System Diagram
The electronic throttle control system consists of the throttle actuator, TP sensor A/B, the APP sensor A/B, the ETCS control relay, and the ECM/PCM.
See also:
Using Call History
PHONE button
► Call History
1. Select a call.
Select All, Dialed, Received,
Missed to view the call history
by category.
2. Select Call to begin dialing.
The call history show ...
Removal (Part -2)
Remove the harness clamp (A) from its clamp bracket (B) located in front
of the left damper top.
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Color
INFO button
► Setup ►Other
►Color
Choose the color of the navigation map and system menus.
Select an item.
The following items are available:
• Map: Sets the color of the ...
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