nissan Workshop Repair Guides

Nissan and Datsun Workshop Service and Repair Manuals

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Engine Controls - Idle, Base Idle & Timing, Startability|Page 2185 > < Engine Controls - Idle, Base Idle & Timing, Startability|Page 2183

Sentra Wagon FWD L4-1597cc 1.6L SOHC (E16i) (1988)

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AB-/BC VALVE CONTROL 

When the idle switch is OFF, the I.S.C. valve opens in response to the amount of intake air and engine speed.
When the accelerator pedal is released, additional air is led into the intake manifold, actuating as AB- or BC valve.

Engine Controls - Idle, Base Idle & Timing, Startability|Page 2185 > < Engine Controls - Idle, Base Idle & Timing, Startability|Page 2183