Line Pressure Test: Troubleshooting

TROUBLESHOOTING CHART

Condition	Possible Cause
Line pressure higher than standard level in each range	Malfunctioning regulator valve Malfunctioning throttle valve Maladjusted A/T throttle cable
Line pressure lower than standard level in each range	Defective O/D clutch Defective oil pump Malfunctioning throttle valve Malfunctioning regulator value Maladjusted A/T throttle cable
Line pressure lower than standard level only in "D" range	Fluid leakage from forward clutch Defective O/D clutch Leakage from "D" range fluid pressure circuit
Line pressure lower than standard level only in "R" range	Fluid leakage from direct clutch Defective O/D clutch Fluid leakage from reverse brake Fluid leakage from "R" range fluid circuit