Ford Ecosport: Automatic Transmission - 6-Speed Automatic Transmission – 6F35 / Diagnosis and Testing - Transmission Line Pressure Test

Line Pressure Test

NOTE: Perform the line pressure test prior to performing the stall speed test. If the line pressure is low at stall, do not perform the stall speed test or transmission damage will occur. Do not maintain WOT in any transmission range for more than 5 seconds.

This test verifies the line pressure is within specification.

1. Remove the 2 bolts and position aside the air cleaner top assembly.
   

1. Remove the air cleaner bottom assembly.
   

1. Connect the air cleaner bottom assembly to the air cleaner top assembly.
   

1. Connect the transmission fluid pressure gauge (307-004) to the line pressure tap.
   

1. Start the engine and check the line pressure.
   

1. Compare the PID LINEDSD# to actual measured pressure. Actual measured pressure should be within 10 PSI (69 kPa). Raise engine RPM to 2000 RPM, Verify LPC operation by monitoring LINE pressure while commanding the PID LINEDSD# up and down.
   

1. If the measured line pressure is not within 10 PSI (69 kPa) of the PID LINEDSD#, see the Line Pressure Diagnosis Chart below for possible source.
   

1. When the pressure tests are complete, install the line pressure tap plug.
   
   • Torque: 12 Nm (106 lb-in).
     

1. Disconnect the air cleaner bottom assembly from the air cleaner top assembly.
   

1. Install the air cleaner bottom assembly.
   

1. Position back the air cleaner top assembly and install the 2 bolts.
   
   • Torque: 5 Nm (44 lb-in).
     

  Line Pressure Diagnosis Chart