Line Pressure Test

Line Pressure Test

Line Pressure Test:

CAUTION: Carry out the Line Pressure Test prior to carrying out the Stall Speed Test. If the line pressure is low at stall, do not carry out the Stall Speed Test or further transaxle damage will occur. Do not maintain wide open throttle (WOT) in any transaxle range for more than 5 seconds. [1][2]Component Tests and General Diagnostics

CAUTION: Do not mistake the transmission fluid drain plug for the line pressure tap plug or the transmission fluid will have to be refilled.

This test verifies that the line pressure is within specification.
1. Connect a pressure gauge to the line pressure tap.
2. Start the engine and check the line pressures see the line pressure chart to determine if the line pressure is within specification.

Line Pressure Chart

Line Pressure Chart:

3. If the line pressure is not within specification, GO to Pinpoint Test A to diagnose the LPC operation. If LPC operation is OK, see the Line Pressure Diagnosis Chart for line pressure concern causes. Test A: Transaxle Control Solenoids

Line Pressure Diagnosis Chart

Line Pressure Diagnosis Chart (Part 1):

Line Pressure Diagnosis Chart (Part 2):