AT2–52 A340E (2JZ—GTE) AUTOMATIC TRANSMISSION – TROUBLESHOOTING 0 – 245 kPa (0 – 2.5 kgf/cm², 0 – 36 psi) Press firmly on the brake pedal Fully apply the parking brake SST Not Ground ECM Ground 0 kg/cm² RPM Idling SST AT5459 Z09091 SPECIFIED ACCUMULATOR BACK PRESSURE (D position, Idling) Condition of ECM terminal SLN | Not ground | Ground Accumulator back pressure kPa (kgf/cm², psi) | 177–255 (1.8–2.6, 26–37) | 0 EVALUATION Problem | Possible cause The accumulator back pressure is not as specified (high or low) when the terminal SLN is not ground. | Throttle cable out of adjustment Throttle valve defective Solenoid modulator valve defective SLN solenoid valve defective Accumulator control valve defective The accumulator back pressure does not become 0 kgf/cm² when the terminal SLN is grounded. | SLN solenoid valve defective