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
• run the quick test referred to in electrical diagnosis