AUTOMATIC TRANSMISSION
-
Electric Control
AT·
13
TIOUble No.
2
No
shifting
Warm up engine
Coolant temp:
so•c
1176°FJ
ATF
temp:
so- so•c
1122- 176°FI
Diagnosis
code
I Proceed
to
trouble
No.
1 IAT·121
Output
diagnostic code
!See
page
AT·
SI
No indicate
Connect
a
voltmeter
to
the
OG
terminal and body.
Does
OG
terminal voltage very
with changes
in
throttle opening
1
Yes
No
Is
voltage between
ECT ECU terminals
No
Brake
signal
BR
and GNO as follows?
faulty
OV
:
Brake
pedal
released
12V:
Brake
pedal
depressed
Yes
•
Computer power sourse and earth
fauhy
•
Throttle
position
signal
faulty
•
OG terminal wire open or short
OiseonMCt
ECT
ECU
connector and road test.
No
Does
the transmission
operate in
the
respective
gear
when
in
the following ranges while driving?
1 Transmission faulty
0
range
...... Overdrive
2
range
...
..
.
3rd gear
L
range
. .
•
..
.
1st
gear
Yes
Continued
on
page AT ·14