Line Pressure Test

Special Testing Procedures









The special tests are designed to aid the technician in diagnosing the hydraulic and mechanical portion of the transaxle.

Line Pressure Test

NOTICE: Carry out the Line Pressure Test prior to carrying out the Stall Speed Test. If 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 gear range for more than 5 seconds.

NOTE: Certain sensor failures may cause high line pressure as a result of failure mode effect management actions. Make sure that self-test and electrical repairs have been carried out, or test results may be incorrect.

This test verifies that the line pressure is within specifications.

1. Remove the line pressure port plug.






2. Install a 1/8 x 28-to-1/8 x 28 pipe thread adapter into the line pressure tap.
- Tighten to 12 Nm (106 lb-in).





3. Connect the Transmission Fluid Pressure Gauge to the adapter.

4. Start engine and check line pressures. Refer to the following Line Pressure Chart to determine if line pressure is within specifications.

5. If line pressure is not within specification, refer to Line Pressure Diagnosis Chart for line pressure concern causes.

6. When line pressure testing is complete, remove adapter and install line pressure port plug.
- Tighten to 8 Nm (71 lb-in).

Line Pressure Chart:

Line Pressure Diagnosis Chart: