Accumulator Backpressure Test

MEASURE ACCUMULATOR BACK PRESSURE

NOTICE:
- Do the test at normal operating fluid temperature 50- 80°C (122 -176°F).
- Be careful to prevent SST's hose from interfering with the exhaust pipe.

(a) Warm up the ATF.
(b) Remove the test plug on the transmission case rear right side and connect SST. SST 09992-00095 (0999200151 09992-00271)

HINT: Connecting the SST will be made easier by moving the RH side heat insulator aside.

(c) Remove the passenger side floor carpet and ECM protector.
(d) Connect SST between ECM and connector of vehicle wire harness. SST 0999001000
(e) Insert one test lead probe into the terminal SLN- of the ECM wire harness side connector and take care not to ground the other test lead probe.





HINT: Prepare test leads which are connected with an 8 W light bulb.

(f) Fully apply the parking brake and chock the 4 wheels.
(g) Start the engine and check idling speed.
(h) Keep your left foot pressing firmly on the brake pedal and shift into D position.
(i) Measure the accumulator back pressure.





(j) With the same conditions as in (h), ground the other probe of the test lead which has one end inserted into the terminal SLN- of the ECM harness side connector, then measure the accumulator back pressure again.





SPECIFIED ACCUMULATOR BACK PRESSURE(Engine idle speed and shift lever D position)





EVALUATION