Comprehensive Components Monitor
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Major Monitors Non Fuel Control & Non Misfire
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Major Monitors Fuel Control & misfire
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(Includes All Engine Hardware Sensor, Switches, Solenoids, etc.)
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(Monitors Entire Emission System)
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(Monitors Entire System)
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Most are one trip Faults
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Most are Two Trips Faults
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Two Trip Faults
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Usually Turns on The MIL and Sets DTC After One Failure
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Turns On The MIL and Sets DTC after Two Consecutive Failure
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Turns On the MIL and Sets DTC After Two Consecutive Failure
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Priority 3
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Priority 1 or 3
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Priority 2 or 4
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All Checked For Continuity
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Done Stop Test = Yes
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Fuel Control Monitor
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Open
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Oxygen Sensor Heater
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Monitors Fuel Control
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Short To Ground
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Oxygen Sensor Response
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System For:
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Short To Voltage
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Catalytic Converter
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Fuel System Lean
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Inputs Checked For Rationality
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Efficiency Except EWMA
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Fuel System Rich
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Outputs Checked For Functionality
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Up to 6 test per trip and a one trip fault (SBEC) and two trip fault on (JTEC)
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Requires 3 Consecutive Fuel System Good Trips to Extinguish the MIL
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EGR System
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Misfire Monitor
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Evaporative Emission System (purge and leak)
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Monitors for Engine Misfire At:
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Non-LDP
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4 X 1000 RPM Counter (4000 Revs) (Type B)
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LDP
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**200 X 3 (600) RPM counter (Type A)
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Requires 3 Consecutive Global Good Trips to Extinguish the MIL*
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Requires 3 Consecutive Global Good Trips to Extinguish the MIL*
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Requires 3 Consecutive Global Good Trips to Extinguish the MIL
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*40 Warm Up Cycles are required to erase DTCs after the MIL has been extinguished
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** Type A misfire is a one trip failure on pre-1999, 2 trip failure on 1999 and later. The MIL will illuminate at the first or second failure, based
on MY.
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