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Home >> Mercury >> 2002 >> Villager Base >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle/Transmission >> Diagnosis And Testing >> Diagnostics >> Special Testing Procedures >> Line Pressure Test >> Line Pressure Diagnosis Chart

Line Pressure Diagnosis Chart

LINE PRESSURE DIAGNOSIS CHART

Test Results Possible Source
HIGH at IDLE - ALL RANGES Wiring harnesses
EPC Solenoid
Pressure regulator valve
Low fluid level
Main control valve body
Cross leaks
Gaskets
LOW at IDLE - ALL RANGES Pump
Separator plate
LOW in Park ONLY Valve body
Separator plate
LOW in Reverse ONLY Low/Reverse clutch
Valve body
LOW in Neutral ONLY Valve body
LOW in DRIVE ONLY Forward clutch
LOW in Manual Third ONLY 3-4 Clutch
LOW in Manual Second ONLY 2-4 Servo
LOW in Manual 1st ONLY Low/Reverse clutch