Special Testing Procedures

SPECIAL TESTING PROCEDURES

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

Engine Idle Speed Check

See Troubleshooting - 2.5L and 3.0L for diagnosis and testing of the engine idle speed.

Line Pressure Test









CAUTION:Carry out the Line Pressure Test before 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.
The Line Pressure Test verifies that the line pressure is within specifications.
1. Connect the Transmission Fluid 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





a All pressures are approximate.
3. If the line pressure is not within specification, go to Pinpoint Test 1: Shift Solenoids to diagnose the line pressure control (LPC) operation. If LPC operation is OK, see the Line Pressure Diagnosis Chart for line pressure concern causes.

4. Once Line Pressure Test is complete, install the line pressure tap plug.
a. Tighten to 9 Nm {0.9 kgf-m, 80 in-lbf}.





Stall Speed Test

WARNING:Block all wheels, set the parking brake and firmly apply the service brake to reduce the risk of vehicle movement during this procedure. Failure to follow these instructions may result in serious personal injury.
NOTE:Carry out Line Pressure Test prior to carrying out Stall Speed Test. If the line pressure is low at stall, do not carry out Stall Speed Test or further transaxle damage will occur.
The Stall Speed Test checks:

- TCC operation and installation
- Holding ability of the forward clutch
- Reverse clutch (the low-reverse bands.
- Planetary one-way clutch (OWC)
- Engine driveability concerns

Conduct this test with the engine coolant and transmission fluid at correct levels and at normal operating temperature.Apply the parking brake firmly for each Stall Speed Test.





1. Connect the scan tool

2. In each of the following ranges D, L and R, press the accelerator pedal to the floor and hold it just long enough to let the engine get to WOT. While making this test, do not hold the throttle open for more than 5 seconds at a time.

NOTE:If the recorded rpm exceeds the maximum limits, release the accelerator pedal immediately because clutch or band slippage is indicated.
3. Note the results in each range.

4. After each range, move the selector lever to NEUTRAL and run the engine at 1,000 rpm for about 15 seconds to cool the torque converter before making the next test.

5. Use the stall speed diagnosis chart for corrective actions.

6. If stall speeds were too high, see the Stall Speed Diagnosis Chart. If stall speeds were too low, first check engine idle speed and tune up. If engine is OK, remove torque converter and check TCC for slippage.

NOTE:The stall speed in REVERSE will be lower. Stall Speed Diagnosis Chart