Operation CHARM
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Mercury
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1991
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Tracer L4-116 1.9L 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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Pinpoint Tests
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HA - Adaptive Fuel
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HA26 - Check HEGO Heater Circuit
HA26 - Check HEGO Heater Circuit
Pinpoint Test HA26: