Operation CHARM
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Hyundai
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1994
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Sonata L4-2.0L
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Powertrain Management
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Component Tests and General Diagnostics
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ECM Power and Ground Supply Circuits
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System Description
System Description
ECU Ground Circuit:
DESCRIPTION
Grounds the
engine control module
.
TROUBLESHOOTING HINTS
If the ground wire of the
engine control module
is not connected securely to ground, the unit will not operate correctly.