TSRM/MK4 Supra/Repair Manual
Repair ManualWiring Diagrams
p.048
ATTE/A340 Automatic Trans (GTE)49 / 118
p.050
SPECIFIED LINE PRESSURE — MK4 Supra A340 Automatic Trans (GTE), page 49
100%
SPECIFIED LINE PRESSURE Line pressure: Condition | D position kPa (kgf/cm2 psi) | R position kPa (kgf/cm2, psi) Idling | 471–530 (4.8–5.4, 68–77) | 686–785 (7.0–8.0, 100–114) Stall | 1,334–1,470 (13.6–15.0, 193–213) | 1,697–2,030 (17.3–20.7, 246–294) If the measured pressures are not up to specified values, check the No.5 solenoid valve and retest. EVALUATION Problem | Possible cause If the measured values at all positions are higher. | Throttle cable out of adjustment Throttle valve defective Regulator valve defective If the measured values at all positions are lower. | Throttle cable out of adjustment Throttle valve defective Regulator valve defective Oil pump defective O/D direct clutch defective If pressure is low in the D position only. | D position circuit fluid leakage Forward clutch defective If pressure is low in the R position only. | R position circuit fluid leakage Direct clutch defective First and reverse brake defective