In Addition to Flashing the MIL, How Do Many OBD

question 5

Multiple Choice

In addition to flashing the MIL, how do many OBD II PCMs react to a "Type A" (severe) cylinder misfire?

• A) The PCM turns off the spark for the misfiring cylinder.
• B) The PCM turns off the fuel injector for the misfiring cylinder.
• C) The PCM increases fuel delivery for the misfiring cylinder in order to allow the extra unburned fuel to cool the catalytic converter.
• D) The PCM energizes an oil solenoid which allows a specially designed lifter to collapse, resulting in keeping the exhaust valve closed so as to block exhaust flow from the misfiring cylinder.

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