AT-116
[EURO-OBD]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Gear change from “11”to“12”in“1”
position.ON vehicle1. PNP switch adjustmentAT- 4 5 6 ,
"Park/Neu-
tral Position
(PNP)
Switch
Adjustment"
¬
2. Control cable adjustmentAT- 4 5 6 ,
"Control
Cable
Adjustment"
¬
Does not change from “1
2”to“11”
in “1” position.ON vehicle1. PNP switch adjustmentAT- 4 5 6 ,
"Park/Neu-
tral Position
(PNP)
Switch
Adjustment"
¬
2. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 3 9 2 ,
"VEHICLE
SPEED
SENSOR·A/
T(REVO-
LUTION
SENSOR)",
AT- 3 9 7 ,
"DTC VEHI-
CLE
SPEED
SENSOR
MTR"
AT- 1 4 2 ,
"DTC P0720
VEHICLE
SPEED
SENSOR·A/
T(REVO-
LUTION
SENSOR)",
AT- 2 2 2 ,
"DTC VEHI-
CLE SPEED
SENSOR
MTR"
3. Shift solenoid valve AAT- 4 0 6 ,"SHIFT
SOLENOID
VA LV E A"
AT- 1 9 3 ,
"DTC P0750
SHIFT
SOLENOID
VA LV E A"
4. Control valve assemblyAT- 4 5 4 ,
"Control
Va l v e
Assembly
and Accu-
mulators"
¬
5. Overrun clutch solenoid valveAT- 4 1 6 ,
"OVER-
RUN
CLUTCH
SOLENOID
VA LV E"
AT- 2 0 8 ,
"DTC P1760
OVERRUN
CLUTCH
SOLENOID
VA LV E"
OFF vehicle6. Overrun clutchAT- 5 1 2 ,
"Forward
and Overrun
Clutches"
¬
7. Low & reverse brakeAT- 5 1 8 ,
"Low&
Reverse
Brake"
¬ Symptom Condition Diagnostic ItemReference Page
Except for
Euro-OBDEURO-OBD
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-117
[EURO-OBD]
D
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ATLarge shock changing from “12”to
“1
1” in “1” position.ON vehicle 1. Control valve assemblyAT-454,
"Control
Va lv e
Assembly
and Accu-
mulators"
¬
OFF vehicle 2. Low & reverse brakeAT-518,
"Low&
Reverse
Brake"
¬
Transmission overheats. ON vehicle1. Fluid levelAT-64,
"FLUID
LEVEL
CHECK"
¬
2. Engine idling rpm"EC-XX",
“Idle Speed
and Ignition
Timin g”¬
3. Throttle position sensor (Accelerator
pedal position (App) sensor) AdjustmentEC-154, "
DTC P0121 APP
SENSOR"
4. Line pressure testAT-68, "
Line
Pressure
Te s t"
¬
5. Line pressure solenoid valveAT-436,
"LINE
PRES-
SURE
SOLENOID
VA LV E"
AT-186,
"DTC P0745
LINE PRES-
SURE
SOLENOID
VA LV E"
6. Control valve assemblyAT-454,
"Control
Va lv e
Assembly
and Accu-
mulators"
¬ Symptom Condition Diagnostic ItemReference Page
Except for
Euro-OBDEURO-OBD
AT-128
[EURO-OBD]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
*2: These terminals are connected to the ECM.
*3: These terminals are connected to the data link connector.40 L/BVehicle speed
sensorWhen moving vehicle at 2 to 3 km/h
(1 to 2 MPH) for 1 m (3 ft) or more.Vo ltag e v a rie s
between less
than 0V and
more than 4.5V
41 W/RThrottle position
sensorWhen depressing accelerator pedal
slowly after warming up engine.
(Voltage rises gradually in response
to throttle position.)Fully-closed
throttle: 0.5V
Fully-open throt-
tle: 4V
42 BThrottle position
sensor
(Ground)———
45 P Stop lamp switchWhen depressing brake pedal. Battery voltage
When releasing brake pedal. 0V
47 BRA/T fluid tempera-
ture sensorWhen ATF temperature is 20°C
(68°F).1.5V
When ATF temperature is 80°C
(176°F).0.5V
48 B/W Ground — — — Te r m i -
nal No.Wire color Item ConditionJudgementstan-
dard(Approx.)
DTC P0733 A/T 3RD GEAR FUNCTION
AT-165
[EURO-OBD]
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AT
DTC P0733 A/T 3RD GEAR FUNCTIONPFP:31940
DescriptionECS004RI
lThis is an OBD-II self-diagnostic item and not available in TCM self-diagnosis.
lThis malfunction will not be detected while the O/D OFF indicator lamp is indicating another self-diagnosis
malfunction.
lThis malfunction is detected when the A/T does not shift into third gear position as instructed by the TCM.
This is not caused by electrical malfunction (circuits open or shorted) but by mechanical malfunction such
as control valve sticking, improper solenoid valve operation, malfunctioning servo piston or brake band,
etc.
TCM TERMINALS AND REFERENCE VALUE
Remarks: Specification data are reference values.
ON BOARD DIAGNOSTIC LOGIC
This diagnosis monitors actual gear position by checking the torque converter slip ratio calculated by TCM as
follows:
Torque converter slip ratio = A x C/B
A: Output shaft revolution signal from revolution sensor
B: Engine speed signal from ECM
C: Gear ratio determined as gear position which TCM supposes
If the actual gear position is higher than the position (3rd) supposed by TCM, the slip ratio will be more than
normal. In case the ratio exceeds the specified value, TCM judges this diagnosis malfunction.
This malfunction will be caused when shift solenoid valve A is stuck closed.
*: P0733 is detected.Gear position 1 2 3 4
Shift solenoid valve A ON (Closed) OFF (Open) OFF (Open) ON (Closed)
Shift solenoid valve B ON (Closed) ON (Closed) OFF (Open) OFF (Open)
Te r m i -
nal No.Wire color Item ConditionJudgement stan-
dard
(Approx.)
11 L / WShift solenoid
valve AWhen shift solenoid valve A oper-
ates.
(When driving in “D
1”or“D4”.)Battery voltage
When shift solenoid valve A does not
operate.
(When driving in “D
2”or“D3”.)0V
GearpositionsupposedbyTCM 1234
Incaseofgearpositionwithnomalfunctions 1234
In case of gear position with shift solenoid valve A stuck closed 1 1 4* 4
Diagnostic trouble code Malfunction is detected when ... Check items (Possible cause)
:A/T3RDGRFNCTN
A/T cannot be shifted to the 3rd gear posi-
tion even if electrical circuit is good.
lShift solenoid valve A
lEach clutch
lHydraulic control circuit : P0733
AT-252
[EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
7.DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly. Refer toAT-453, "
Installation".
2. Check the following items:
–Shift valve B
–Overrunclutchcontrolvalve
–Shift solenoid valve B
–Pilot valve
–Pilot filter
3. Disassemble A/T.
4. Check the following items:
–Servo piston assembly
–Brake band
–Torque converter
–Oil pump assembly
OK or NG
OK >> GOTO6
NG >> Repair or replace damaged parts.
12. A/T Does Not Perform Lock-upECS004T5
SYMPTOM:
A/T does not perform lock-up at the specified speed.
1.CHECK SELF-DIAGNOSTIC RESULTS
Does self-diagnosis show damage to torque converter clutch sole-
noid valve circuit after cruise test?
Ye s o r N o
Yes >> Check torque converter clutch solenoid valve circuit.
Refer toAT-421, "
TORQUE CONVERTER CLUTCH
SOLENOID VALVE"(Except for Euro-OBD)/AT-181,
"DTC P0740 TORQUE CONVERTER CLUTCH SOLE-
NOID VALVE"(Euro-OBD).
No >> GOTO2
2.CHECK THROTTLE POSITION SENSOR*
*: This sensor means accelerator pedal position (APP) senror.
Check throttle position sensor. Refer to "EC-´´", “DTC P0121
ACCELERATOR PEDAL POSITION(APP)SENSOR”. —Except for
Euro-OBD/Refer to "EC-´´", “DTC P0121 ACCELERATOR PEDAL
POSITION(APP)SENSOR”. — Euro-OBD
OK or NG
OK >> GOTO3
NG >> Repair or replace throttle position sensor.
SCIA0772E
PBIB0498E
TROUBLE DIAGNOSES FOR SYMPTOMS
AT-255
[EURO-OBD]
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Lock-up is not released when accelerator pedal is released.
1.CHECK THROTTLE POSITION SENSOR* CIRCUIT
*: This sensor means accelerator pedal position (app) senror.
With CONSULT-II
Does “TCM INPUT SIGNALS” in “DATA MONITOR” show damage throttle position sensor circuit?
Without CONSULT-II
Does self-diagnosis show damage to throttle position sensor circuit?
Ye s o r N o
Yes >> Check throttle position sensor circuit. Refer to “21. TCM
Self-diagnosis Does Not Activate (PNP & Overdrive
Control switches, and Throttle Position Sensor )”,AT-
260, "21. TCM Self-diagnosis Does Not Activate (PNP &
Overdrive Control Switches, and Throttle Position Sen-
sor Circuit Checks)".
No >> GOTO2
2.CHECK SYMPTOM
Check again.
OK or NG
OK >>INSPECTION END
NG >> 1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
15. Engine Speed Does Not Return To Idle (Light Braking D4®D3)ECS004T8
SYMPTOM:
lEngine speed does not smoothly return to idle when A/T shifts from D4to D3.
lVehicle does not decelerate by engine brake when turning overdrive control switch OFF.
lVehicle does not decelerate by engine brake when shifting A/T from “D” to “2” position.
1.CHECK SELF-DIAGNOSTIC RESULTS
Does self-diagnosis show damage to overrun clutch solenoid valve
circuit after cruise test?
Ye s o r N O
Yes >> Check overrun clutch solenoid valve circuit. Refer toAT-
416, "OVERRUN CLUTCH SOLENOID VALVE"
(Except for Euro-OBD)/AT - 2 0 8 , "DTC P1760 OVERRUN
CLUTCH SOLENOID VALVE"(Euro-OBD).
No >> GOTO2
SAT367J
SCIA0774E
TROUBLE DIAGNOSES FOR SYMPTOMS
AT-259
[EURO-OBD]
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19.A/TDoesNotShift:22®11, When Selector Lever “2”®“1” PositionECS004TC
SYMPTOM:
A/T does not shift from 2
2to 11when changing selector lever from “2” to “1” position.
1.CHECK PNP SWITCH CIRCUIT
With CONSULT-II
Does “TCM INPUT SIGNALS” in “DATA MONITOR” show damage to PNP switch circuit?
Without CONSULT-II
Does self-diagnosis show damage to PNP switch circuit?
Ye s o r N o
Yes >> Check PNP switch circuit. Refer to “21. TCM Self-diag-
nosis Does Not Activate (PNP & Overdrive Control
switches, and Throttle Position Sensor Circuit Checks)”,
AT-260, "
21. TCM Self-diagnosis Does Not Activate
(PNP & Overdrive Control Switches, and Throttle Posi-
tion Sensor Circuit Checks)".
No >> GOTO2
2.CHECK SYMPTOM
Check again.
OK or NG
OK >>INSPECTION END
NG >> 1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose
connection with harness connector.
20. Vehicle Does Not Decelerate By Engine BrakeECS004TD
SYMPTOM:
Vehicle does not decelerate by engine brake when shifting from 2
2(12)to11.
1.CHECK SYMPTOM
Is 6. Vehicle Does Not Creep Backward In “R” Position OK?
Ye s o r N o
Yes >> Go to 15. Engine Speed Does Not Return To Idle (Light Braking D4®D3),AT - 2 5 5 , "15. Engine
Speed Does Not Return To Idle (Light Braking D4®D3)".
No >> Go to 6. Vehicle Does Not Creep Backward In “R” Position,AT-237, "
6. Vehicle Does Not Creep
Backward In“R”Position".
SCIA0706E
SAT778B
TROUBLE DIAGNOSIS — INTRODUCTION
AT-283
[EXC.F/EURO-OBD]
D
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4. 4-
3.Cruise testAT- 2 9 6 , "3.
CRUISE
TEST"
AT- 3 0 0 ,
"Cruise Test
—Part 1"
Part-1
o8. Vehicle Cannot Be Started From D
1,AT- 3 6 4 , "8. Vehicle Cannot Be Started From D1".
o9. A/T Does Not Shift: D
1®D2Or Does Not Kickdown: D4®D2,AT- 3 6 6 , "9. A/T Does Not Shift: D1
®D2Or Does Not Kickdown: D4®D2".
o10. A/T Does Not Shift: D
2®D3,AT-368, "10. A/T Does Not Shift: D2®D3".
o11. A/T Does Not Shift: D
3®D4,AT-371, "11.A/TDoesNotShift:D3®D4".
o12. A/T Does Not Perform Lock-up,AT- 3 7 4 , "
12. A/T Does Not Perform Lock-up".
o13. A/T Does Not Hold Lock-up Condition,AT- 3 7 5 , "
13. A/T Does Not Hold Lock-up Condition".
o14. Lock-up Is Not Released,AT- 3 7 6 , "
14. Lock-up Is Not Released".
o15. Engine Speed Does Not Return To Idle (Light Braking D
4®D3),AT-377, "15. Engine Speed Does
Not Return To Idle (Light Braking D4®D3)".
Part-2AT- 3 0 3 ,
"Cruise Test
—Part 2"o16. Vehicle Does Not Start From D1,AT- 3 7 9 , "16. Vehicle Does Not Start From D1".
o9. A/T Does Not Shift: D
1®D2Or Does Not Kickdown: D4®D2,AT- 3 6 6 , "9. A/T Does Not Shift: D1
®D2Or Does Not Kickdown: D4®D2".
o10. A/T Does Not Shift: D
2®D3,AT-368, "10. A/T Does Not Shift: D2®D3".
o11. A/T Does Not Shift: D
3®D4,AT-371, "11.A/TDoesNotShift:D3®D4".
Part-3AT- 3 0 5 ,
"Cruise Test
—Part 3"o17.A/TDoesNotShift:D4®D3When Overdrive Control Switch “ON”®“OFF”,AT-380, "17. A/T Does
Not Shift: D4®D3, When Overdrive Control Switch“ON”®“OFF”".
o15. Engine Speed Does Not Return To Idle (Engine Brake In D
3),AT-377, "15. Engine Speed Does Not
Return To Idle (Light Braking D4®D3)".
o18. A/T Does Not Shift: D
3®22, When Selector Lever “D”®“2” Position,AT-380, "18. A/T Does Not
Shift: D3®22, When Selector Lever“D”®“2”Position".
o15. Engine Speed Does Not Return To Idle (Engine Brake In 2
2),AT- 3 7 7 , "15. Engine Speed Does Not
Return To Idle (Light Braking D4®D3)".
o19. A/T Does Not Shift: 2
2®11, When Selector Lever “2”®“1” Position,AT-381, "19. A/T Does Not
Shift: 22®11, When Selector Lever“2”®“1”Position".
o20. Vehicle Does Not Decelerate By Engine Brake,AT- 3 8 1 , "
20. Vehicle Does Not Decelerate By Engine
Brake".
o21. TCM Self-diagnosis Does Not Activate (PNP & Overdrive Control Switches , and throttle position sen-
sor Circuit Checks),AT-382, "
21. TCM Self-diagnosis Does Not Activate (PNP & Overdrive Control
Switches, and Throttle Position Sensor Circuit Checks)".
oSELF-DIAGNOSTIC PROCEDURE — Mark detected items.
oVehicle speed sensor·A/T (Revolution sensor),AT- 3 9 2 , "
VEHICLE SPEED SENSOR·A/T (REVO-
LUTION SENSOR)".
oVehicle speed sensor·MTR,AT-397, "
DTC VEHICLE SPEED SENSOR MTR".
oAccelerator pedal position(APP) sensor,AT- 4 0 1 , "
ACCELE RATOR PEDAL POSITION (APP)
SENSOR".
oShift solenoid valve A,AT-406, "
SHIFT SOLENOID VALVE A".
oShift solenoid valve B,AT-4 11 , "
SHIFT SOLENOID VALVE B".
oOverrun clutch solenoid valve,AT- 4 1 6 , "
OVERRUNCLUTCHSOLENOIDVALVE".
oTorque converter clutch solenoid valve,AT-421, "
TORQUE CONVERTER CLUTCH SOLENOID
VA LV E".
oBatt/fluid temp sen (A/T fluid temperature sensor and TCM power source),AT-426, "
BATT/FLUID
TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM POWER SOURCE)".
oEngine speed signal,AT- 4 3 2 , "
ENGINE SPEED SIGNAL".
oLine pressure solenoid valve,AT-436, "
LINE PRESSURE SOLENOID VALVE".
oCAN communication line,AT-443, "
CAN CAMMUNICATION LINE".
oControl unit (RAM), control unit (ROM),AT- 2 2 6 , "
DTC CONTROL UNIT (RAM), CONTROL UNIT
(ROM)".
oControl unit (EEP ROM),AT- 2 2 8 , "
DTC CONTROL UNIT(EEPROM)".
oPNP & overdrive control switches, and throttle position sensor,AT- 3 8 2 , "
21. TCM Self-diagnosis
Does Not Activate (PNP & Overdrive Control Switches, and Throttle Position Sensor Circuit Checks)"
.
oBattery
oOthers