FICD

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Fast Idle Control Device (F.I.C.D.) was fitted to some Datsuns with factory-fitted Aircon. The FICD raises the idle speed automatically when A/C is ON to respond to the increased load.

Overview

FICD consists of two parts, a throttle actuator, and a magnetic vacuum switch. The switch is electrically operated off the compressor signal. The switch then lets vacuum go to the actuator, which pulls the carburetor throttle a little (about 100 RPM).

Magnetic Switch

The magnetic switch is on the side of the compressor, and opens when the compressor activates.

Fast Idle Actuator

1. Clearance 'C' should be more than 3mm, Engine fully warm, A/C off.
2. Start engine and set correct warm idle speed (700 in neutral, or 650 RPM in 'D')
3. Turn A/C ON, in 'N' and adjust engine speed to 800 RPM.

1. FICD adjusting screw
2. Lever 'A'
3. Lever 'B'
4. Cable lock screw

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Sunny Truck

From 1978-1989, no special idle control device was used. For 1990-1994 they added FICD.

full

Engine Mounted 9810- Fast Idle Control Device (FICD)
* 14875-G5105 Manifold Connector [right next to carb base plate]
* Vacuum Hose L=370
* 27654-H8500 FICD Actuator 
  92551-95W00 Actuator Bracket
* 27720-G2500 FICD Lever
* 92255-G5100 Solenoid Valve
  92256-95W00 Bracket
* Vacuum Hose L=270

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B310

1979 North America A14 & A15 models had optional A/C.

A14/A15 Manual Transmission
* A/C OFF: 700 rpm
* A/C ON: 800 rpm 

A14/A15 Automatic Transmission
* A/C OFF: 650 rpm in "D"
* A/C ON: 800 rpm in "N"