Pressure Diagnostic Chart

WARNING: This page is about a different car, the 2005 Mercury Montego and 2005 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.

PRESSURE DIAGNOSTIC CHART

Test Results	Possible Source
Values of both D and R ranges are lower than the standards	Insufficient engine power T/C one-way clutch slipping
Only the value of D range is higher than the standards	Low line pressure. Shift control solenoid assembly (SLT) failure, primary regulator valve failure Valve body failure (SLC3 hydraulic pressure system) C1 clutch slipping One-way clutch Fl failure
Only the value of R range is higher than the standards	Low line pressure. Shift control solenoid assembly (SLT) failure, primary regulator valve failure Valve body failure (SLC3 hydraulic pressure system) C3 clutch failure B2 brake failure
Values of both D and R ranges are higher than the standards	Low line pressure. Shift control solenoid assembly (SLT) failure, primary regulator valve failure Primary regulator valve failure Oil pump failure Oil strainer clogging