Line Pressure Test
- Perform the mechanical system test preparation. (See MECHANICAL SYSTEM TEST PREPARATION .)
- Remove the front under cover No. 2. (See FRONT UNDER COVER NO. 2 REMOVAL/INSTALLATION .)
- Disconnect the wiring harness clip from the harness bracket.
- Remove the splash shield. (LH) (See SPLASH SHIELD REMOVAL/INSTALLATION .)
- Remove the harness bracket installation bolts from the transaxle and set it aside.
- Remove the pressure detection square head plug.WARNING:
- Do not remove the square head plug when the ATF temperature is high. Otherwise, ATF could overflow and cause severe burns or serious injury. Remove the square head plug when the transaxle and ATF temperatures are low.
NOTE:- Use a suitable oil pressure gauge that corresponds to the line pressure because the maximum scale value differs depending on the oil pressure gauge.
- Install SSTs (49 D019 908, 49 D019 909, 49 D019 910, 49 D019 911, 49 D019 913) to the line pressure detection port as shown in the figure.
- Start the engine.
- Warm up the engine until the ATF temperature is 60-70 °C {140-158 °F}.
- Shift the selector lever to the D position.
- Measure the line pressure while idling in D position.
- Measure the line pressures while idling in the M (1st gear) and R positions using the same procedure.
- Stop the engine.
- Change the low-pressure gauge (49 D019 908) to the high-pressure gauge (49 D019 907).
- Start the engine.
- Measure the line pressure while stalling in D position.
- Strongly depress the brake pedal with the left foot.
- Shift the selector lever to the D position.CAUTION:
- To prevent damage to the transaxle, measure the line pressure while stalling (Step (3)-(4)) within 5 s.
- Slowly depress the accelerator pedal fully with the right foot all the way down.
- Read the line pressure quickly while stalling, and remove the right foot from the accelerator pedal.
- Shift the selector lever to the N position and idle for 1 min or more .
- Measure the line pressure while stalling for positions other than D in the same procedure.
- If there is any malfunction, one of the following causes may have occurred:
Condition Possible cause Lower than specification Lower in R, D, and M (1GR) position - Oil pump wear
- ATF leakage from oil pump, control valve body, and transaxle case
- Pressure regulator valve sticking
- Pressure control solenoid malfunction
- Solenoid reducing valve sticking
Lower in D and M (1GR) position - ATF leakage from low clutch hydraulic circuit
Lower in R and M (1GR) position - ATF leakage from low and reverse brake hydraulic circuit
Lower in R position - ATF leakage from R-3-5 brake hydraulic circuit
Higher than specification Higher in R, D, and M (1GR) position - Pressure regulator valve sticking
- Pressure control solenoid malfunction
LINE PRESSURE SPECIFICATIONMeasurement conditions Specification (kPa {kgf/cm2 , psi}) Idling R position 500-700 {5.10-7.13, 72.6-101.0} D and M (1GR) position 330-470 {3.37-4.79, 47.9-68.1} Stalling R position 1, 790-2, 100 {18.26-21.41, 259.7-304.5} D and M (1GR) position 970-1, 170 {9.90-11.93, 141.0-169.6} - Stop the engine.
- Remove the SSTs
.WARNING:
- If the SST is removed when the ATF temperature is high, ATF could overflow and cause severe burns or serious injury. Remove the SST when the transaxle and ATF temperatures are low.
- Install a new square head plug.NOTE:
- Do not reuse the square head plug because a sealant coating has been applied.
Tightening torque
- 7.2-9.8 N.m {74-99 kgf.cm, 64-86 in.lbf}
- Install the harness bracket installation bolts.
Tightening torque
- 8-10 N.m {82-101 kgf.cm, 71-88 in.lbf}
- Install the splash shield. (LH) (See SPLASH SHIELD REMOVAL/INSTALLATION .)
- Connect the wiring harness clip to the harness bracket.
- Install the front under cover No. 2. (See FRONT UNDER COVER NO. 2 REMOVAL/INSTALLATION .)