Operation CHARM
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Subaru
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1993
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Loyale Wagon 2WD F4-1781cc 1.8L SOHC
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Repair and Diagnosis
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Powertrain Management
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Computers and Control Systems
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Testing and Inspection
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Initial Inspection and Diagnostic Overview
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Description of On-Board Diagnostics
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Fail-Safe Function
Fail-Safe Function
PURPOSE
In the case of certain circuit or component failure, the ECU substitutes those signals. This allows the vehicle to be driven with reduced performance.