Line Pressure Diagnosis

If the line pressure is low at idle in all ranges check the following items:

• Low fluid level
• Restricted inlet filter
• Loose main body
• Solenoid body or accumulator body to case bolts
• Excessive leakage in pump
• Case
• Control bodies
• Sticking main regulator valve or damaged inlet tube seal on inlet filter
• Damaged gaskets or separator plate

If the line pressure is high at idle in all ranges then check the following items:

• Main regular valve
• Solenoid body and wiring harness
• Using scan tool, run Quick Test.