Operation CHARM
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Jeep Truck
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1997
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Cherokee 2WD 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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Description and Operation
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Functional Operation
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Modes of Operation
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Ignition Switch Off Mode
Ignition Switch Off Mode
When the
ignition switch
is turned to the OFF position, the
Powertrain Control Module
(PCM)
stops operating the injectors, ignition coil, Automatic Shutdown
(
ASD
)
relay
and
fuel pump relay
.