Operation CHARM
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Grand Cherokee 2WD L6-4.0L VIN S
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Checking the PCM Power and Ground Circuits
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Checking the PCM Power and Ground Circuits
Test 1 - 3:
SYMPTOM
CHECKING THE
PCM
POWER AND GROUNDS
POSSIBLE CAUSES
-
(A7)
PCM
fused B+ circuit
-
(F991)
PCM
fused
ignition switch
output circuit
-
(Z81,Z82)
PCM
ground circuits