FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM
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Car repair manuals for everyone.
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Mercury
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1991
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Topaz AWD L4-140 2.3L HSC (VIN X)
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Repair and Diagnosis
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Powertrain Management
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Technical Service Bulletins
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By Symptom
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False instrument warning light/gauges
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EEC IV - Self Test Codes and MIL Service Tips
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10) KOEO Processor Ram Test Failed
10) KOEO Processor Ram Test Failed
The processor's Random Access Memory (RAM) is tested during KOEO Self-Test. If the processor's RAM has failed, the
MIL
will light and no codes are output.