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Test Procedure

Connect a pressure gauge to line pressure test port. See Figure . Start engine. Apply service and parking brakes. Check pressure in all gears. See LINE PRESSURE SPECIFICATIONS - PSI  . If line pressure is not within specification, perform QUICK TEST. See 4F20E ELECTRONIC CONTROLS article. If no electronic malfunctions are present, perform air pressure checks and service valve body. See Figure .

LINE PRESSURE SPECIFICATIONS - PSI (kPa)

Selector Position Idle RPM WOT Stall RPM
"R" 124 (853) 270 (1863)
"D" 72 (500) 159 (1098)
"2" 72 (500) 159 (1098)
"L" 72 (500) 159 (1098)