Operation CHARM
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Mercury Truck
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1995
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Villager V6-181 3.0L SOHC
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Repair and Diagnosis
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Powertrain Management
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Testing and Inspection
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Scan Tool Testing and Procedures
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Diagnostics
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NGS Scan Tool Test Modes and Descriptions
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Key on Engine Off (KOEO) Tests
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EGR Control Test
EGR Control Test
EGR
CONTROL TEST - (KOEO)
Description: NGS Tester cycles Exhaust Gas Recirculation Control (EGRO)
solenoid
on and off in three second intervals.
Result: NGS Tester prompts the technician to verify
solenoid
operation by sound.