Diagnostic trouble code
Malfunction is detected when ...
Check items (Possible cause)
: A/T 1ST GR FNCTN
A/T cannot be shifted to the 1st gear
position even if electrical circuit is good.
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Shift solenoid valve A
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Shift solenoid valve B
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Each clutch
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Hydraulic control circuit
: P0731
SAT014K
SAT971J
SAT021J
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION
PROCEDURE
NCAT0043S03
CAUTION:
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Always drive vehicle at a safe speed.
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Be careful not to rev engine into the red zone on the
tachometer.
NOTE:
If “DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCE-
DURE” has been previously conducted, always turn ignition
switch “OFF” and wait at least 5 seconds before conducting
the next test.
TESTING CONDITION:
Always drive vehicle on a level road to improve the accuracy
of test.
After the repair, perform the following procedure to confirm the
malfunction is eliminated.
With CONSULT-II
1)
Start engine and select “DATA MONITOR” mode for “A/T” with
CONSULT-II.
2)
Make sure that output voltage of A/T fluid temperature sensor
is within the range below.
FLUID TEMP SEN: 0.4 - 1.5V
If out of range, drive the vehicle to decrease the voltage (warm
up the fluid) or stop engine to increase the voltage (cool down
the fluid).
3)
Select “1ST GR FNCTN P0731” of “DTC WORK SUPPORT”
mode for “A/T” with CONSULT-II and touch “START”.
4)
Accelerate vehicle to 20 to 25 km/h (12 to 16 MPH) under the
following condition and release the accelerator pedal com-
pletely.
THROTTLE POSI: Less than 1.0/8 (at all times during step
4)
Selector lever: D position (OD “ON”)
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Check that “GEAR” shows “2” after releasing pedal.
5)
Depress accelerator pedal to WOT (more than 7.0/8 of
“THROTTLE POSI”) quickly from a speed of 20 to 25 km/h (12
to 16 MPH) until “TESTING” changes to “STOP VEHICLE” or
“COMPLETED”. (It will take approximately 3 seconds.)
If the check result NG appears on CONSULT-II screen, go to
“DIAGNOSTIC PROCEDURE”, AT-132.
If “STOP VEHICLE” appears on CONSULT-II screen, go to the
following step.
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Check that “GEAR” shows “1” when depressing accelera-
tor pedal to WOT.
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If “TESTING” does not appear on CONSULT-II for a long
time, select “SELF-DIAGNOSIS” for “ENGINE”. In case a
GI
MA
EM
LC
EC
FE
CL
MT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0731 A/T 1ST GEAR FUNCTION
Description (Cont’d)
AT-129