Line Pressure Diagnosis Chart

LINE PRESSURE DIAGNOSIS CHART

Test Results	Possible Source
High at idle - all ranges	Wiring harnesses EPC boost valve EPC solenoid Main regulator valve
Low at idle - all ranges	Low fluid level Fluid inlet filter/seal Main control body Cross leaks Gaskets Pump Separator plate
Low - all forward ranges	Forward clutch Main control Front servo
Low in park only	Valve body
Low in reverse only	Separator plate Rear servo piston, cover seal Reverse clutch Front servo Valve body Forward clutch
Low in neutral only	Valve body Front servo
Low in overdrive only	Forward clutch Front servo Valve body
Low in drive only (O/D canceled)	Forward clutch Front servo Valve body
Low in 1st position	Forward clutch Valve body
Low in 2nd position	Intermediate servo Front servo Forward clutch