Mazda 1990 323 Workshop Manual Supplement page 300

K2
MECHANICAL SYSTEM TEST
Caution
l
Idling for at least one minute is to cool the ATF and to prevent deterioration of the fluid.
5. Shift the selector lever to N range and run the engine at idle for at least one minute.
6. Read the line pressure at idle and at the engine stall speed for each range in the same manner.
Specified line pressure:
Line pressure kPa (kg/cm2, psi)
Range
Idle
Stall
D, 5 L
353-432 (3.6-4.4, 51-63)
873-1,040 (8.9-10.6, 127-151)
R
598-942 (6.1-9.6, 87-137) 1,668-2,011 (I 7.0-20.5, 242-292)
03UOK2-071
7. Install a new square head plug in the inspection port.
Tightening torque: 4.9-9.8 N#m (50-100 cm-kg, 43-87 in-lb)
Evaluation of Line Pressure Test
Line pressure
Worn oil pump
Possible location of problem
Low pressure in every position
Low pressure in D and S only
Low pressure in R only
Higher than specification
Fluid leaking from oil pump, control valve body, or transaxle case
Pressure regulator valve sticking
Throttle valve sticking
Throttle modulator valve sticking
Throttle cable misadjusted
Fluid leaking from hydraulic circuit of forward clutch
Fluid leaking from hydraulic circuit of low and reverse brake
Throttle valve sticking
Throttle modulator valve sticking
Pressure regulator valve sticking
Throttle cable misadjustment
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03UOKX-093
K2-124