Toyota Celica Supra 1986 Service And Repair Manual page 294

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W~e Harness Side
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IIIII I I I
L R N
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2
AUTOMATIC TRANSMISSION - Electric Control
AT-19
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llt•l s ' l
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2. INSPECT SOLENOID
(a) Disconnect the connector from the ECT ECU.
(b) Measure the resistance between Sa,
s,, s,
and
ground.
STD: 11- 160
(C)
Apply battery voltage to the solenoid. At this time,
check that an operation noise can be heard from the
solenoid.
NOTE: If there is foreign matter in the solenoid valve.
there will be no fluid control even with solenoid operation.
3.
INSPECT NEUTRAL START SWITCH
Shift the lever into the L or 2 range.
(al
(b)
I
C)
Disconnect the connector near the staner motor.
Check that there is continuity between L. 2 and
ground.
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4 . INSPECT THROTTLE POSITION SENSOR
Using an ohmmeter. check the re.sistance between each
Vc terminal.
VTA
IOL
e,
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Throttle valve
condition
Resistance lkO)
IOL -
e,
Fully closed 0
Open lnfinitv
Vc - E:t
-
3 - 7
Vu. - E2
Fully closed
0.2 - 0.8
Fully open 3.3
10
5. INSPECT BRAKE SIGNAL
Check that the brake light comes on when the brake pe·
dal is depressed.
6 . INSPECT SPEED SENSOR N0.2
(al Jack up the rear wheel on one side.
(b) Connect an ohmmeter between the connector and
ground.
(cl Spin the wheel and check that the meter needle
deflects from 00 to <»0.