· Engine running at idle speed
· Vehicle
speed less than 1 km/h (0.6 mph)
· Coolant
temperature higher than 80 °C/176 °F
· Throttle valve aperture less than 2 %
· Following trouble codes not stored: 21, 22, 24
· Nominal idle speed is not maintained; deviation
is greater than 150 rpm
· The above conditions must be fulfilled for at
least 20 s
If
the speed sensor has malfunctioned and trouble code 24 has not yet been
recognized, trouble code 35 may be set under certain circumstances.
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