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Jeep
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1997
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Cherokee 4WD L6-4.0L VIN S
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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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Relays and Modules - Computers and Control Systems
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Engine Control Module
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Description and Operation
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Powertrain Control Module (PCM)
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Tachometer-PCM Output
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Tachometer-PCM Output
TACHOMETER-PCM OUTPUT
The
Powertrain Control Module
(PCM)
supplies engine rpm values to the instrument cluster tachometer through the PCM's CCD bus circuits. Refer Instrument Panel and Gauges for tachometer information.