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AT-52 < SERVICE INFORMATION > TROUBLE DIAGNOSIS 5. Securely engage the parking brake so that the tires do not turn. 6. Start the engine, then measure the line pressure at both idle and CAUTION: • Keep the brake pedal pressed all the way down during measurement. • When measuring the line pressure at the stall speed, refer to "STALL TEST". 7. After the measurements are complete, install the oil pressure CAUTION: • Do not reuse the O-ring. Line Pressure Judgement of Line Pressure Test SCIA7463E : 7.3 N·m (0.74 kg-m, 65 in-lb) SAT493G Engine speed Line pressure kPa (kg/cm 2 , psi) “R” position “D” and “M” positions At idle speed 425 - 465 (4.3 - 4.7, 62 - 67) 379 - 428 (3.9 - 4.4, 55 - 62) At stall speed 1,605 - 1,950 (16.4 - 19.9, 233 - 283) 1,310 - 1,500 (13.4 - 15.3, 190 - 218) Judgement Possible cause Idle speed Low for all positions Possible causes include malfunctions in the pressure supply system and low oil pump output. ⇒ oil pump ⇒ pressure regulator valve passage oil leak • Engine idle speed too low Only low for a spe- Possible causes include an oil pressure leak in a passage or device related to the position after High Possible causes include a sensor malfunction or malfunction in the line pressure adjustment func- |