Line Pressure Check

LINE PRESSURE TEST

Pressure Line Hook-ups For Testing:

- Remove transaxle temperature sensor and install pressure gauge.
- Connect the portable diagnostic tool (PDT).
- Run engine to bring transaxle to running temperature.
- Key On engine Off. On first menu selection, select "Special Test."
- Select Line Pressure.
- Transaxle in Park.
- PDT will prompt you to start engine.
- Select Run and the test will begin. The test will set engine speed to 1500 rpm and command line pressure up in steps from 396 - 1518 kPa (57 - 220 psi) in 100 kPa (15 psi) intervals.

As test is in progress, watch the gauge to assure the gauge readings follow the commanded pressures.
- When installing the temperature sensor, use Saturn P/N 21485278 sealant with Teflon on threads (or equivalent.) After the sensor has been connected, clear diagnostic trouble codes and/or information flags caused by having the sensor disconnected.


If the PDT is not available, the oil pressure maximum and minimum values can be checked following the procedure below.

Expected Pressure Readings:

- With gauge connected and trans at operating temperature.
- With engine idling in Park, line pressure should be 400 - 600 kPa (58 - 72 psi).
- Remove line pressure fuse (7.5 amp TRS LP) UHJB
- With engine idling in P (Park), pressure should be 1500 - 1690 kPa (218 - 245 psi).

NOTE: High value may be slightly lower if transaxle temperature is greater than 110°C (230°F)