How much should idle rpm increase when the lighting or rear defogger switch is turned on?

Idle rpm should increase 50 to 200 rpm after the lighting switch or rear defogger switch is turned ON.

What voltage should be measured between terminals No. 10 and No. 6?

12V when the lighting switch or rear defogger switch is turned ON, and 0V when both the lighting switch and rear defogger switch are turned OFF.

How do you test the idle speed control solenoid valve by itself?

Check for a "clicking" sound from the solenoid valve when the battery is connected and disconnected. If no sound is heard, replace the solenoid valve and always use a new washer.

What are the harness wire colors for the idle speed control solenoid valve?

Positive (⊕) is G/W (green/white) and negative (⊖) is G/B (green/black).

Home/ Registry/ Nissan/ Micra/ 1990 Nissan Micra/ Photo supermotors.net/registry/media/210291

Nissan Micra Idle Speed Control System Inspection - Solenoid Valve Test & Torque

Idle Speed Control System inspection with solenoid valve voltage and torque, Nissan EF & EC

‹ ›

Idle speed control inspection: idle should rise 50-200 rpm with lamps/defogger on; measure 12V at terminals 10 and 6; idle-speed-control solenoid torque 18-29 N-m.

AI caption June 2005 · Photo 120 of 412

This is a scanned page (EF & EC-20) from a factory service manual covering inspection of the Idle Speed Control System. The procedure instructs the technician to verify that idle rpm increases 50 to 200 rpm when the lighting switch or rear defogger switch is turned ON. If it does not, a tester is attached to terminal No. 10 (ground) and terminal No. 6, the ignition switch is set to ON, and voltage is measured: 12V is specified when the lighting switch or rear defogger switch is ON, and 0V when both are OFF. If the specified voltage is not read, the idle speed control solenoid valve is checked alone by listening for a clicking sound when battery power is connected and disconnected. Harness colors are given as G/W for positive and G/B for negative. If no clicking is heard, the solenoid valve must be replaced, always using a new washer, and tightened to 18-29 N·m (1.8-3.0 kg-m, 13-22 ft-lb). Two illustrations show the tester connection near the engine revolution unit (SEC263A) and the idle speed control valve location on the carburetor assembly. The page provides diagnostic voltages, wire colors, and the torque specification needed to test and replace the idle speed control solenoid valve.

Is this accurate? Sign in to help verify it.

Frequently asked questions

How much should idle rpm increase when the lighting or rear defogger switch is turned on?: Idle rpm should increase 50 to 200 rpm after the lighting switch or rear defogger switch is turned ON.
What voltage should be measured between terminals No. 10 and No. 6?: 12V when the lighting switch or rear defogger switch is turned ON, and 0V when both the lighting switch and rear defogger switch are turned OFF.
How do you test the idle speed control solenoid valve by itself?: Check for a "clicking" sound from the solenoid valve when the battery is connected and disconnected. If no sound is heard, replace the solenoid valve and always use a new washer.
What is the torque specification for the idle speed control solenoid valve?: 18 - 29 N·m (1.8 - 3.0 kg-m, 13 - 22 ft-lb).
What are the harness wire colors for the idle speed control solenoid valve?: Positive (⊕) is G/W (green/white) and negative (⊖) is G/B (green/black).