Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA2002HIGHLANDER 4WD L4-2.4L (2AZ-FE)REPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINAUTOMATIC TRANSMISSION/TRANSAXLETESTING AND INSPECTIONHYDRAULIC TEST
2002 Toyota Highlander 4WD L4-2.4L (2AZ-FE)
Hydraulic Test
2002 Toyota Highlander 4WD L4-2.4L (2AZ-FE)SECTION Hydraulic Test
HYDRAULIC TEST
a. Measure the line pressure.
NOTE:
- Do the test at the normal operation fluid temperature the 50 - 80 °C (122 - 176 °F)
- The line pressure test should always be carried out in pairs. One technician should observe the conditions of wheels or wheel stoppers outside the vehicle while the other is doing the test.
- Be careful to prevent SST's hose from interfering with the exhaust pipe.
1. Warm up the ATF.
2. Remove the test plug on the transaxle case front left side and connect SST.
SST 09992 - 00095 (09992 - 00231, 09992 - 00271)
3. Fully apply the parking brake and check the 4 wheels.
4. Start the engine and check the idling speed.
5. keep your left foot pressed firmly on the brake pedal and shift into the D position.
6. Measure the line pressure when the engine is idling.
7. Depress the accelerator pedal all the way down. Quickly read the highest line pressure when the engine speed reaches the stall speed.
8. Do the test in the R position in the same way.
Specified line pressure:
If the measured pressure does not reach the specified value, recheck the throttle cable adjustment and then retest.
Evaluation:
a. Measure the line pressure.
NOTE:
- Do the test at the normal operation fluid temperature the 50 - 80 °C (122 - 176 °F)
- The line pressure test should always be carried out in pairs. One technician should observe the conditions of wheels or wheel stoppers outside the vehicle while the other is doing the test.
- Be careful to prevent SST's hose from interfering with the exhaust pipe.
1. Warm up the ATF.
2. Remove the test plug on the transaxle case front left side and connect SST.
SST 09992 - 00095 (09992 - 00231, 09992 - 00271)
3. Fully apply the parking brake and check the 4 wheels.
4. Start the engine and check the idling speed.
5. keep your left foot pressed firmly on the brake pedal and shift into the D position.
6. Measure the line pressure when the engine is idling.
7. Depress the accelerator pedal all the way down. Quickly read the highest line pressure when the engine speed reaches the stall speed.
8. Do the test in the R position in the same way.
Specified line pressure:
If the measured pressure does not reach the specified value, recheck the throttle cable adjustment and then retest.
Evaluation:
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.