What resistance should the high-tension ignition cables have?

Less than 30 kΩ. Shake the cable while measuring to check for intermittent breaks.

How do I test the A.T.C. air cleaner air control valve?

With the engine cold and turned off, the cold air inlet should be open and the hot air inlet closed. Immediately after starting, the cold air inlet should be closed and hot air inlet open. As the engine warms up, the valve should gradually open to the cold air inlet side. If problems are found, perform the further inspection in Section EF.

What vacuum hoses must be checked on the A.T.C. air cleaner?

Hoses from the intake manifold to the temperature sensor, idle compensator, and vacuum motor must be securely connected in the correct position and checked for cracks or distortion.

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Nissan Micra Spark Plug Specs, Ignition Wire & A.T.C. Air Cleaner Check MA-12

Nissan engine maintenance MA-12 spark plug specs ignition wire and ATC air cleaner checks

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Engine-maintenance page listing spark plug types (BPR5ES/BPR4ES/BPR6ES), spark plug torque 20-29 N·m, ignition-wire resistance check (less than 30 kΩ) and ATC air-cleaner vacuum-hose inspection.

AI caption April 2005 · Photo 32 of 412

This is page MA-12 from a factory service manual, in the Engine Maintenance section under 'Before Engine Starts (Cont'd)'. It lists spark plug specifications for Canada: standard type BPR5ES, hot type BPR4ES, and cold type BPR6ES, with a spark plug tightening torque of 20-29 N·m (2.0-3.0 kg-m, 14-22 ft-lb). The page also covers checking ignition wires (high-tension cables): inspecting for cracks, damage, burned terminals, and proper fit, measuring resistance (must be less than 30 kΩ per figure SMA015A), and shaking cables during measurement to detect intermittent breaks. Finally, it describes checking the Automatic Temperature Control (A.T.C.) air cleaner: verifying vacuum hoses (intake manifold to temperature sensor, idle compensator, and vacuum motor) are connected correctly and free of cracks; then a functional test where, with a cold engine off, the air control valve's cold air inlet should be open and hot air inlet closed; immediately after starting, the cold inlet should close and hot inlet open; and as the engine warms, the valve should gradually open to the cold air inlet side. Problems found should be inspected further per Section EF. Figure SEF328B shows hot and cold air inlets on the air cleaner assembly.

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Frequently asked questions

What spark plugs are specified for Canada on this page?: Standard type BPR5ES, hot type BPR4ES, and cold type BPR6ES.
What is the spark plug torque specification?: 20-29 N·m (2.0-3.0 kg-m, 14-22 ft-lb).
What resistance should the high-tension ignition cables have?: Less than 30 kΩ. Shake the cable while measuring to check for intermittent breaks.
How do I test the A.T.C. air cleaner air control valve?: With the engine cold and turned off, the cold air inlet should be open and the hot air inlet closed. Immediately after starting, the cold air inlet should be closed and hot air inlet open. As the engine warms up, the valve should gradually open to the cold air inlet side. If problems are found, perform the further inspection in Section EF.
What vacuum hoses must be checked on the A.T.C. air cleaner?: Hoses from the intake manifold to the temperature sensor, idle compensator, and vacuum motor must be securely connected in the correct position and checked for cracks or distortion.