TSRM/MK4 Supra/Repair Manual
Repair ManualWiring Diagrams
p.051

ATTE/A340 Automatic Trans (GTE) — Specified Accumulator Back Pressure (D position, Idling), page 52

52 / 118
p.053
Specified Accumulator Back Pressure (D position, Idling) — MK4 Supra A340 Automatic Trans (GTE), page 52
100%
Page text (OCR transcript)
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