Toyota ZZT230 series Repair Manual page 376

MECHANI C AL SYSTEM TESTS
7.
The
( a) Measure the stall speed.
object of this test is to check the overall performance
NOTI C E: •
the stall speeds in the D and
•
the test at normal operati n g fl u i d temperature
•
not conti n uousl y run thi s test l o nger than
Do
•
To ensure safet y , conduct thi s t e st I n a wi d e, cl e ar l e vel area whi c h provi d es good tracti o n.
Do
The stal l test shoul d al w ays be carri ed out I n pai r s. One techni c i a n shoul d observe
ti o ns of wheel s or wheel stoppers outsi d e the vehi c l e whi l e the other I s doi n g the t
(1) Chock the 4 wheels.
Connect an OBD II scan tool or
(2)
Fully apply the parking brake.
(3)
St a r t
Keep your left foot pressed firmly on the brake pedal.
(4)
( 6 }
Shi f t
(5)
Stal l speed:
)
Quickly read the stall speed at this time.
Eval u ati o n:
low
{a) Stall speed
Stall speed h".gh i
(b)
(e)
Stall speed high in R position
(d) Stal l
speed high
{b)
Measure the ttme lag.
When the shift lever is shifted while the engine is idling, there will be a certain time lapse or lag before
the shock can be felt. This is used for checking the condition of the 0/D direct clutch, forward clutch,
•
NOTI C E:
and 1 st
•
Do the test at normal operati n g fl u i d temperature
•
sure to al l o w
Be
)
Take measurements and take the average val u e .
3
Connect an OBD II scan tool or
(1)
A
the engine.
into the D position. Press all the way down on the accelerator pedal with your right foot.
rpm
:t
2,370 150
Problem
A
in D and positions
D position
n
in 0
posilions
and A
&
reverse brake.
mi n ute I n terval bet w een tests .
1
DIAGNOSTICS
AUTOMATIC TRANSAXLE (U240El
Torque:
(3) Hold in position and tighten the bolt.
5.4
For continuity inspection of the park/neutral position
switch, see page 01-202.
I d l e speed:
Check the idle speed.
(g)
( I n N posi t i o n and ai r condi t i o ner OFF)
positions.
o
50 - 80
seconds.
1
TOYOTA
hand-held tester to DLC3.
• Engine output may be Insufficient
•Stator one-way
HINT: If more than 600 rpm below the speci!ied value. the lorque
converter clutch
•Une pressure too low
•Forward clutch slfppirl(l
•No.2 one-way
•OlD clutch slipping
•Une pressure too row
&
• Direct dutch slipping
•lsi
•OlD clutch slipping
• Une
•Improper fluid level
•DID one-way clutch not operaling properly
50-80
TOYOTA
hand - held tester to DLC3.
N· m kgf. c m, l n · l b f)
48
(55
rpm
650 :t 50
of
the transaxle and engine by measuring
·c
(122 - 176 "F).
Possible cause
cl tch Is
u operating properly
oould be faulty.
clutch
not operating properly
reverse brake slipping
low
pressure too
°F)
oC
.
(122 - 176
Of-165
st .
the condi­
e