1G-9 Fuel System:
Throttle Body
• The throttle body assembly consists of the main bore, throttle valve and TPS (Throttle Position Sensor).
• The throttle body adjusts the intake air amount with the throttle valve which is connected to the throttle lever linkage.
• The TPS installed on the throttle body informs the ECM of the throttle valve opening angle.
NOTE
Do not try to adjust or remove any of the throttle body component parts (Throttle Position Sensor,
throttle valve, throttle stop screw, etc.).
These components have been factory adjusted to precise specifications.
Idle Air Control System Description
Z9J0111701005
IAC Valve/Passage
The IAC valve is a stepper motor type mounted on the intake manifold.
Its purpose is to control the amount of intake air flowing through the IAC passage.
The IAC valve consists of a stepper motor, rod, valve and other parts.
As the stepper motor is controlled by signals from the ECM, valve position changes will increase or decrease the air
flow through the IAC passage.
1. Throttle body assembly 2. TPS
1. IAC valve
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2
I9J011170025-01
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I9J011170073-01
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