Page 1489 of 2248
OBD0404
AQ: DTC P0725
—ENGINE SPEED INPUT CIRCUIT
MALFUNCTION (ATNE)—
DESCRIPTION:
The engine speed signal is sent to TCM from ECM. This
signal is used for lock-up clutch control and line pressure
control.
DTC DETECTING CONDITION:
Two consecutive trips with fault
TROUBLE SYMPTOM:
No lock-up occurs. (after engine warm-up)
AT diagnostic indicator light (AT OIL TEMP indicator
light) remains on when vehicle speed is“0”.
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1.Check harness connector between TCM and
ECM (MFI).
2.Check input signal for TCM.
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.
[T3D0] and [T3E0].>
WIRING DIAGRAM:
OBD0405
NOTE:
For the diagnostic procedure on engine speed input circuit,
refer to“3-2 [T7I0]”.
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OBD0599
AR: DTC P0731
—GEAR 1 INCORRECT RATIO (GR
—1)—
OBD0600
AS: DTC P0732
—GEAR 2 INCORRECT RATIO (GR
—2)—
OBD0601
AT: DTC P0733
—GEAR 3 INCORRECT RATIO (GR
—3)—
OBD0602
AU: DTC P0734
—GEAR 4 INCORRECT RATIO (GR
—4)—
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DTC DETECTING CONDITION:
Two consecutive trips with fault
TROUBLE SYMPTOM:
Shift point too high or too low; engine brake not effected
in“3”range; excessive shift shock; excessive tight corner
“braking”
1.Check any other DTC (besides DTC P0731,
P0732, P0733, P0734) on display.
2.Check throttle position sensor circuit.
“3-2 [T7L0]”.>
3.Check vehicle speed sensor 1 circuit.
“3-2 [T7M0]”.>
4.Check vehicle speed sensor 2 circuit.
“3-2 [T7N0]”.>
5.Check engine speed input circuit.
[T7I0]”.>
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.
[T3D0] and [T3E0].>
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WIRING DIAGRAM:
OBD0604
1CHECK ANY OTHER DTC (BESIDES DTC
P0731, P0732, P0733, P0734) ON DISPLAY.
: Is there any other DTC on display?
: Inspect relevant DTC using“11. Diagnostics Chart
with Trouble Code”.
: Go to step 2.
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2CHECK THROTTLE POSITION SENSOR CIR-
CUIT.
: Is there any trouble in throttle position sen-
sor circuit?
: Repair or replace throttle position sensor circuit.
: Go to step 3.
3
CHECK VEHICLE SPEED SENSOR 1 CIRCUIT.
: Is there any trouble in vehicle speed sensor
1 circuit?
: Repair or replace vehicle speed sensor 1 circuit.
: Go to step 4.
4
CHECK VEHICLE SPEED SENSOR 2 CIRCUIT.
: Is there any trouble in vehicle speed sensor
2 circuit?
: Repair or replace vehicle speed sensor 2 circuit.
: Go to step 5.
5
CHECK ENGINE SPEED INPUT CIRCUIT.
: Is there any trouble in engine speed input
circuit?
: Repair or replace engine speed input circuit.
: Go to next.
: Is there poor contact in TCM connector?
: Repair poor contact in TCM connector.
: Go to next.
: Is there any mechanical trouble in automatic
transmission?
: Repair or replace automatic transmission.
: Replace TCM with a new one.
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OBD0605
AV: DTC P0740
—TORQUE CONVERTER CLUTCH SYSTEM
MALFUNCTION (LU
—F)—
DESCRIPTION:
The lock-up engaging and disengaging conditions are set
for each gear shift range, gear position and shift pattern
and correspond to the throttle position and vehicle speed,
and the duty solenoid is electronically controlled by TCM
controls the lock-up clutch. The lock-up clutch engagement
and disengagement are controlled by the lock-up control
valve.
DTC DETECTING CONDITION:
Two consecutive trips with fault
TROUBLE SYMPTOM:
No lock-up occurs. (after engine warm-up)
No shift or excessive tight corner“braking”
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1.Check any other DTC (besides DTC P0740) on
display.
2.Check duty solenoid B circuit.
[T7B0]”.>
3.Check throttle position sensor circuit.
“3-2 [T7L0]”.>
4.Check vehicle speed sensor 1 circuit.
“3-2 [T7M0]”.>
5.Check vehicle speed sensor 2 circuit.
“3-2 [T7N0]”.>
6.Check engine speed input circuit.
[T7I0]”.>
7.Check inhibitor switch circuit.
DTC P0705 [T11AN0]”.>
8.Check brake light switch circuit.
DTC P0703 [T11AM0]”.>
9.Check ATF temperature sensor circuit.
“3-2 [T7G0]”.>
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.
[T3D0] and [T3E0].>
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