Mazda 1990 323 Workshop Manual Supplement page 301

MECHANICAL SYSTEM TEST
K2
THROTTLEPRESSURETEST
This test measures throttle pressures as a means of checking the hydraulic components and inspecting for
oil leakage.
Preparation
1. Perform the preparation procedure outlined in STALL TEST. (Refer to page K2-119.)
2. Connect a tachometer to the engine.
3. Connect the SST to the line pressure inspection port (square head plug T).
Procedure
ENGAGE PARKING BRAKE
IDLE SPEED
THROTTLE
AT IDLE
PRESSURE
THROTTLE PRESSURE
AT STALL
J-L
1. Start the engine and check the idle speed in P range. (Refer to Section F.)
Idle speed: 750 f 50 rpm (with parking brake applied)
2. Shift the selector lever to D range and read the throttle pressure at idle.
Caution
l
Steps 3 and 4 must be performed within 5 seconds to prevent possible transaxle damage.
3. Depress the brake pedal firmly with the left foot and gradually depress the accelerator pedal with the right foot.
4. Read the throttle pressure as soon as the engine speed becomes constant, then release the accelerator
pedal.
K2-125