Operation CHARM
: Car repair manuals for everyone.
Home
>>
Jeep Truck
>>
1999
>>
Wrangler L6-4.0L VIN S
>>
Repair and Diagnosis
>>
A L L Diagnostic Trouble Codes ( DTC )
>>
Testing and Inspection
>>
Diagnostic Trouble Code Descriptions
>>
Detailed Descriptions
>>
Trouble Code Descriptions
>>
Communication
>>
No Response From Powertrain Control Module
No Response From Powertrain Control Module
SYMPTOM
NO RESPONSE FROM POWERTRAIN CONTROL MODULE
POSSIBLE CAUSES
-
CCD bus (+) CKT to PCM open
-
CCD bus (-) CKT to PCM open
-
Engine does not run
-
PCM does not communicate