AT-300
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Vehicle will not run in any position.ON vehicle1. Fluid levelAT-264, "
FLUID LEVEL
CHECK"
2. Control cable adjustmentAT-416, "Control Cable
Adjustment"
3. Line pressure testAT-268, "Line Pressure
Te s t"
4. Line pressure solenoid valveAT-396, "
LINE PRES-
SURE SOLENOID
VA LV E"
OFF vehicle5. Oil pumpAT-444, "
Oil Pump"
6. Torque converterAT-425, "
Locations of
Adjusting Shims, Needle
Bearings, Thrust Washers
and Snap Rings"
7. Parking componentsAT-421, "Components"
Transmission noise in “D”, “2”, “1” and
“R” positions.ON vehicle 1. Fluid levelAT-264, "
FLUID LEVEL
CHECK"
OFF vehicle 2. Torque converterAT-425, "
Locations of
Adjusting Shims, Needle
Bearings, Thrust Washers
and Snap Rings"
Failure to change from “D3 ” to “22 ”
when changing lever into “2” position.
AT- 3 4 0 , "
A/T Does Not Shift: D3→ 22
, When Selector Lever “D”→“2” Posi-
tion"
ON vehicle1. Accelerator pedal position (APP) sensorAT-362, "
ACCELE
RATOR PEDAL POSI-
TION (APP) SENSOR"
2. Shift solenoid valve BAT-372, "SHIFT SOLE-
NOID VALVE B"
3. Control valve assemblyAT-414, "
Control Valve
Assembly and Accumula-
tors"
4. Control cable adjustmentAT-416, "Control Cable
Adjustment"
OFF vehicle 5. Brake bandAT-488, "Band Servo Pis-
ton Assembly"
Gear change from “22 ” to “23 ” in “2”
position.ON vehicle1. PNP switchAT-344, "
TCM Self-diag-
nosis Does Not Activate"
2. Control cable adjustmentAT-416, "Control Cable
Adjustment"
Symptom Condition Diagnostic Item Reference Page
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-301
[EXC.F/EURO-OBD]
D
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G
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MA
B
AT
Engine brake does not operate in “1”
position.
AT-338, "
Vehicle Does Not Start From
D1"
ON vehicle1. PNP switchAT- 3 4 4 , "
TCM Self-diag-
nosis Does Not Activate"
2. Control cable adjustmentAT- 4 1 6 , "Control Cable
Adjustment"
3. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 3 5 3 , "
VEHICLE
SPEED SENSOR·A/T
(REVOLUTION SEN-
SOR)",AT-358, "DTC
VEHICLE SPEED SEN-
SOR MTR"
4. Control valve assemblyAT- 4 1 4 , "
Control Valve
Assembly and Accumula-
tors"
5. Overrun clutch solenoid valveAT- 3 7 7 , "
OVERRUN
CLUTCH SOLENOID
VA LV E"
OFF vehicle6. Overrun clutchAT- 4 7 1 , "
Forward and
Overrun Clutches"
7. Low & reverse brakeAT- 4 7 6 , "Low & Reverse
Brake"
Gear change from “11 ” to “12 ” in “1”
position.ON vehicle1. PNP switchAT- 3 4 4 , "
TCM Self-diag-
nosis Does Not Activate"
2. Control cable adjustmentAT- 4 1 6 , "Control Cable
Adjustment"
Does not change from “12 ” to “11 ” in
“1” position.ON vehicle1. PNP switchAT- 3 4 4 , "
TCM Self-diag-
nosis Does Not Activate"
2. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 3 5 3 , "
VEHICLE
SPEED SENSOR·A/T
(REVOLUTION SEN-
SOR)",AT-358, "DTC
VEHICLE SPEED SEN-
SOR MTR"
3. Shift solenoid valve AAT- 3 6 7 , "SHIFT SOLE-
NOID VALVE A"
4. Control valve assemblyAT- 4 1 4 , "
Control Valve
Assembly and Accumula-
tors"
OFF vehicle5. Low one-way clutchAT- 4 2 1 , "
OVERHAUL",
AT- 4 2 5 , "
Locations of
Adjusting Shims, Needle
Bearings, Thrust Washers
and Snap Rings"
6. Brake bandAT- 4 8 8 , "Band Servo Pis-
ton Assembly"
7. Low & reverse brakeAT- 4 7 6 , "Low & Reverse
Brake"
Large shock changing from “12 ” t o “ 11
” in “1” position.ON vehicle 1. Control valve assemblyAT- 4 1 4 , "
Control Valve
Assembly and Accumula-
tors"
OFF vehicle 2. Low & reverse brakeAT- 4 7 6 , "Low & Reverse
Brake"
Symptom Condition Diagnostic Item Reference Page
AT-302
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Transmission overheats. ON vehicle1. Fluid levelAT-264, "
FLUID LEVEL
CHECK"
2. Engine idling rpmEC-1391, "Idle Speed and
Ignition Timing"
3. Accelerator pedal position (APP) sensorAT-362, "
ACCELE
RATOR PEDAL POSI-
TION (APP) SENSOR"
4. Line pressure testAT-268, "Line Pressure
Te s t"
5. Line pressure solenoid valveAT-396, "
LINE PRES-
SURE SOLENOID
VA LV E"
6. Control valve assemblyAT-414, "
Control Valve
Assembly and Accumula-
tors"
Transmission overheats. OFF vehicle7. Oil pumpAT-444, "
Oil Pump"
8. Reverse clutchAT-463, "Reverse Clutch"
9. High clutchAT-466, "High Clutch"
10. Brake bandAT-488, "Band Servo Pis-
ton Assembly"
11. Forward clutchAT-471, "Forward and
Overrun Clutches"
12. Overrun clutchAT-471, "Forward and
Overrun Clutches"
13. Low & reverse brakeAT-476, "Low & Reverse
Brake"
14. Torque converterAT-425, "
Locations of
Adjusting Shims, Needle
Bearings, Thrust Washers
and Snap Rings"
ATF shoots out during operation.
White smoke emitted from exhaust
pipe during operation.ON vehicle 1. Fluid levelAT-264, "
FLUID LEVEL
CHECK"
OFF vehicle2. Reverse clutchAT-463, "
Reverse Clutch"
3. High clutchAT-466, "High Clutch"
4. Brake bandAT-488, "Band Servo Pis-
ton Assembly"
5. Forward clutchAT-471, "Forward and
Overrun Clutches"
6. Overrun clutchAT-471, "Forward and
Overrun Clutches"
7. Low & reverse brakeAT-476, "Low & Reverse
Brake"
Symptom Condition Diagnostic Item Reference Page
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-303
[EXC.F/EURO-OBD]
D
E
F
G
H
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MA
B
AT
Offensive smell at fluid charging pipe.ON vehicle 1. Fluid levelAT- 2 6 4 , "
FLUID LEVEL
CHECK"
OFF vehicle2. Torque converterAT- 4 2 5 , "
Locations of
Adjusting Shims, Needle
Bearings, Thrust Washers
and Snap Rings"
3. Oil pumpAT- 4 4 4 , "Oil Pump"
4. Reverse clutchAT- 4 6 3 , "Reverse Clutch"
5. High clutchAT- 4 6 6 , "High Clutch"
6. Brake bandAT- 4 8 8 , "Band Servo Pis-
ton Assembly"
7. Forward clutchAT- 4 7 1 , "Forward and
Overrun Clutches"
8. Overrun clutchAT- 4 7 1 , "Forward and
Overrun Clutches"
9. Low & reverse brakeAT- 4 7 6 , "Low & Reverse
Brake"
Torque converter is not locked up. ON vehicle1. Accelerator pedal position (APP) sensorAT- 3 6 2 , "
ACCELE
RATOR PEDAL POSI-
TION (APP) SENSOR"
2. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 3 5 3 , "
VEHICLE
SPEED SENSOR·A/T
(REVOLUTION SEN-
SOR)",AT-358, "DTC
VEHICLE SPEED SEN-
SOR MTR"
3. Engine speed signalAT- 3 9 2 , "ENGINE SPEED
SIGNAL"
4. A/T fluid temp sen circ and TCM pow
sourAT- 3 8 6 , "
BATT/FLUID
TEMP SEN (A/T FLUID
TEMP SENSOR CIR-
CUIT AND TCM POWER
SOURCE)"
5. Line pressure testAT- 2 6 8 , "Line Pressure
Te s t"
6. Torque converter clutch solenoid valveAT- 3 8 1 , "
TORQUE CON-
VERTER CLUTCH
SOLENOID VALVE"
7. Control valve assemblyAT- 4 1 4 , "
Control Valve
Assembly and Accumula-
tors"
Torque converter is not locked up. OFF vehicle 8. Torque converterAT- 4 2 5 , "
Locations of
Adjusting Shims, Needle
Bearings, Thrust Washers
and Snap Rings"
Symptom Condition Diagnostic Item Reference Page
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-305
[EXC.F/EURO-OBD]
D
E
F
G
H
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MA
B
AT
A/T does not shift to “D4 ” when driv-
ing with overdrive control switch “ON”.ON vehicle1. Accelerator pedal position (APP) sensorAT- 3 6 2 , "
ACCELE
RATOR PEDAL POSI-
TION (APP) SENSOR"
2. PNP switchAT- 3 4 4 , "TCM Self-diag-
nosis Does Not Activate"
3. Overdrive control switchAT- 3 4 4 , "TCM Self-diag-
nosis Does Not Activate"
4. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 3 5 3 , "
VEHICLE
SPEED SENSOR·A/T
(REVOLUTION SEN-
SOR)",AT-358, "DTC
VEHICLE SPEED SEN-
SOR MTR"
5. Shift solenoid valve AAT- 3 6 7 , "SHIFT SOLE-
NOID VALVE A"
6. Overrun clutch solenoid valveAT- 3 7 7 , "
OVERRUN
CLUTCH SOLENOID
VA LV E"
7. Control valve assemblyAT- 4 1 4 , "
Control Valve
Assembly and Accumula-
tors"
8. A/T fluid temp sen circ and TCM pow
sourAT- 3 8 6 , "
BATT/FLUID
TEMP SEN (A/T FLUID
TEMP SENSOR CIR-
CUIT AND TCM POWER
SOURCE)"
9. Line pressure testAT- 2 6 8 , "Line Pressure
Te s t"
A/T does not shift to “D4 ” when driv-
ing with overdrive control switch “ON”.OFF vehicle10. Brake bandAT- 4 8 8 , "
Band Servo Pis-
ton Assembly"
11. Overrun clutchAT- 4 7 1 , "Forward and
Overrun Clutches"
Engine is stopped at “R”, “D”, “2” and
“1” positions.ON vehicle1. Fluid levelAT- 2 6 4 , "
FLUID LEVEL
CHECK"
2. Torque converter clutch solenoid valveAT- 3 8 1 , "
TORQUE CON-
VERTER CLUTCH
SOLENOID VALVE"
3. Shift solenoid valve AAT- 3 6 7 , "SHIFT SOLE-
NOID VALVE A"
4. Shift solenoid valve BAT- 3 7 2 , "SHIFT SOLE-
NOID VALVE B"
5. Control valve assemblyAT- 4 1 4 , "
Control Valve
Assembly and Accumula-
tors"
Symptom Condition Diagnostic Item Reference Page
AT-308
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
*2: These terminals are connected to the ECM.
*3: These terminals are connected to the data link connector.32 *2 RThrottle position
sensor
(Power source)
or When turning ignition switch to “ON”. 4.5 - 5.5V
When turning ignition switch to
“OFF”.0V
34 W/GPNP switch “D”
position
and When setting selector lever to “D”
position.Battery voltage
When setting selector lever to other
positions.0V
35 L/WPNP switch “R”
positionWhen setting selector lever to “R”
position.Battery voltage
When setting selector lever to other
positions.0V
36 GPNP switch “N” or
“P” positionWhen setting selector lever to “N” or
“P” position.Battery voltage
When setting selector lever to other
positions.0V
39 *2 L/OREngine speed sig-
nal
and Refer to EC-479, "
ECM INSPEC-
TION TABLE" (QR25DE) or EC-
1166, "ECM INSPECTION TABLE"
(QR20DE).—
40 L/BVehicle speed
sensorWhen moving vehicle at 2 to 3 km/h
(1 to 2 MPH) for 1 m (3 ft) or more.Voltage varies
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.)
AT-336
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
Engine Speed Does Not Return To Idle (Light Braking D
4→ D3 )ECS004VG
SYMPTOM:
●Engine speed does not smoothly return to idle when A/T shifts from D4 to D3 .
●Vehicle does not decelerate by engine brake when turning overdrive control switch OFF.
●Vehicle 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 to AT-
377, "OVERRUN CLUTCH SOLENOID VALVE"
(Except for Euro-OBD).
No >> GO TO 2.
2. CHECK ACCELERATOR PEDAL POSITION (APP) SENSOR
Check accelerator pedal position (APP) sensor. Refer to AT- 3 6 2 ,
"ACCELE RATOR PEDAL POSITION (APP) SENSOR" —Except for
Euro-OBD.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace accelerator pedal position (APP) sen-
sor.
3. CHECK A/T FLUID CONDITION
1. Remove oil pan.
2. Check A/T fluid condition.
OK or NG
OK >> GO TO 4.
NG >> GO TO 6.
SCIA0774E
PBIB0498E
SAT171B
TROUBLE DIAGNOSES FOR SYMPTOMS
AT-343
[EXC.F/EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
Vehicle Does Not Decelerate By Engine BrakeECS004VL
SYMPTOM:
Vehicle does not decelerate by engine brake when shifting from 2
2 (12 ) to 11 .
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 AT- 3 4 4 , "TCM Self-
diagnosis Does Not Activate" .
No >> GO TO 2
2.CHECK CONTROL CABLE
Check control cable. Refer to AT-416, "
Control Cable Adjustment" .
OK or NG
OK >> GO TO 3.
NG >> Adjust control cable. Refer to AT- 4 1 6 , "
Control Cable
Adjustment" .
3.CHECK VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR) AND CHECK VEHICLE SPEED
SENSOR·MTR CIRCUIT
Check vehicle speed sensor·A/T (revolution sensor) and vehicle speed sensor·MTR circuit. Refer to AT- 3 5 3 ,
"VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)" and AT-358, "DTC VEHICLE SPEED SENSOR
MTR" (Except for Euro-OBD).
OK or NG
OK >> GO TO 4.
NG >> Repair or replace vehicle speed sensor·A/T (revolution sensor) and vehicle speed sensor·MTR
circuits.
SCIA0706E
SAT023JB