AT-278
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Sharp shock in shifting from “N” to “D”
position.ON vehicle1. Engine idling rpmEC-558
2. Accelerator pedal position (APP) sensorAT-345
3. Line pressure testAT-260
4. A/T fluid temp sen circ and TCM pow
sourAT-374
5. Engine speed signalAT-382
6. Line pressure solenoid valveAT-387
7. Control valve assemblyAT-404
8. Accumulator N-DAT-404
OFF vehicle 9. Forward clutchAT-475
Vehicle will not run in “D” and “2” posi-
tions (but runs in “1” and “R” posi-
tions).ON vehicle 1. Control cable adjustmentAT-409
OFF vehicle 2. Low one-way clutchAT-416,
AT-423
Vehicle will not run in “D”, “1”, “2” posi-
tions (but runs in “R” position). Clutch
slips. Very poor acceleration.
AT- 2 9 9
ON vehicle1. Fluid levelAT-256
2. Stall testAT-257
3. Line pressure testAT-260
4. Line pressure solenoid valveAT-387
5. Control valve assemblyAT-404
6. Accumulator N-DAT-404
Vehicle will not run in “D”, “1”, “2” posi-
tions (but runs in “R” position). Clutch
slips. Very poor acceleration.
AT- 2 9 9
OFF vehicle7. Reverse clutch AT-464
8. High clutchAT-469
9. Forward clutchAT-475
10. Forward one-way clutchAT-416
11. Low one-way clutchAT-416,
AT-423
Clutches or brakes slip somewhat in
starting.ON vehicle1. Fluid levelAT-256
2. Control cable adjustmentAT-409
3. Accelerator pedal position (APP) sensorAT-345
4. Line pressure testAT-260
5. Line pressure solenoid valveAT-387
6. Control valve assemblyAT-404
7. Accumulator N-DAT-404
8. Shift solenoid valve AAT-350
9. Shift solenoid valve BAT-356
10. Overrun clutch solenoid valveAT-362
11. Torque converter clutch solenoid valveAT-368
OFF vehicle12. Forward clutchAT-475
13. Reverse clutchAT-464
14. Low & reverse brakeAT-483
15. Oil pumpAT-443
16. Torque converterAT-423
Excessive creep. ON vehicle 1. Engine idling rpmEC-558
Symptom Condition Diagnostic Item Reference Page
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-279
[EXC.F/EURO-OBD]
D
E
F
G
H
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J
K
L
MA
B
AT
No creep at all.
AT- 2 9 7
and AT-299
ON vehicle1. Fluid levelAT- 2 5 62. Line pressure testAT- 3 8 7
3. Control valve assemblyAT- 4 0 4
OFF vehicle4. Forward clutchAT- 4 7 55. Oil pumpAT- 4 4 3
6. Torque converterAT- 4 2 3
Failure to change gear from “D1 ” to
“D
2 ”.ON vehicle1. Control cable adjustmentAT- 4 0 9
2. Shift solenoid valve AAT- 3 5 0
3. Control valve assemblyAT- 4 0 4
4. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 3 3 2, AT-339
5. Accelerator pedal position (APP) sensorAT- 3 4 5
OFF vehicle 6. Brake bandAT- 4 9 7
Failure to change gear from “D2 ” to
“D
3 ”.ON vehicle1. Control cable adjustmentAT- 4 0 9
2. Shift solenoid valve BAT- 3 5 6
3. Control valve assemblyAT- 4 0 4
4. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 3 3 2, AT-339
5. Accelerator pedal position (APP) sensorAT- 3 4 5
OFF vehicle6. High clutchAT- 4 6 97. Brake bandAT- 4 9 7
Failure to change gear from “D3 ” to
“D
4 ”.ON vehicle1. PNP switchAT- 3 2 4
2. Overrun clutch solenoid valveAT- 3 6 2
3. Shift solenoid valve AAT- 3 5 0
4. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 3 3 2, AT-339
5. A/T fluid temp sen circ and TCM pow
sourAT- 3 7 4
OFF vehicle 6. Brake bandAT- 4 9 7
Too high a gear change point from “D1
” to “D
2 ”, from “D2 ” to “D3 ”, from “D3
” to “D
4 ”.
AT- 3 0 4
and AT-309
ON vehicle1. Accelerator pedal position (APP) sensorAT- 3 4 5
2. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 3 3 2, AT-339
3. Shift solenoid valve AAT- 3 5 0
4. Shift solenoid valve BAT- 3 5 6
Gear change directly from “D1 ” to “D3
” occurs.ON vehicle1. Fluid levelAT- 2 5 62. Accumulator servo releaseAT- 4 0 4
OFF vehicle 3. Brake bandAT- 4 9 7
Engine stops when shifting lever into
“R”, “D”, “2” and “1”.ON vehicle1. Engine idling rpmEC-558
2. Fluid levelAT- 2 5 6
3. Torque converter clutch solenoid valveAT- 3 6 8
4. Control valve assemblyAT- 4 0 4
OFF vehicle 5. Torque converterAT- 4 2 3
Symptom Condition Diagnostic Item Reference Page
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-281
[EXC.F/EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
Vehicle braked by gear change from
“D
2 ” to “D3 ”.ON vehicle 1. Fluid levelAT- 2 5 6OFF vehicle 2. Brake bandAT- 4 9 7
Vehicle braked by gear change from
“D
3 ” to “D4 ”.ON vehicle 1. Fluid levelAT- 2 5 6OFF vehicle2. Overrun clutchAT- 3 6 23. Forward one-way clutchAT- 4 1 6
4. Reverse clutchAT- 4 6 4
Maximum speed not attained. Accel-
eration poor.ON vehicle1. Fluid levelAT- 2 5 6
2. PNP switchAT- 3 2 4
3. Overdrive control switchAT- 3 2 4
4. Accelerator pedal position (APP) sensorAT- 3 4 5
5. Shift solenoid valve AAT- 3 5 0
6. Shift solenoid valve BAT- 3 5 6
7. Control valve assemblyAT- 4 0 4
OFF vehicle8. Reverse clutchAT- 4 6 4
9. High clutchAT- 4 6 9
10. Brake bandAT- 4 9 7
11. Low & reverse brakeAT- 4 8 3
12. Oil pumpAT- 4 4 3
13. Torque converterAT- 4 2 3
Failure to change gear from “D4 ” to
“D
3 ”.ON vehicle1. Fluid levelAT- 2 5 6
2. Accelerator pedal position (APP) sensorAT- 3 4 5
3. Overrun clutch solenoid valveAT- 3 6 2
4. Shift solenoid valve AAT- 3 5 0
5. Line pressure solenoid valveAT- 3 8 7
6. Control valve assemblyAT- 4 0 4
OFF vehicle7. Brake bandAT- 4 9 78. Overrun clutchAT- 4 7 5
Failure to change gear from “D3 ” to
“D
2 ” or from “D4 ” to “D2 ”.ON vehicle1. Fluid levelAT- 2 5 6
2. Accelerator pedal position (APP) sensorAT- 3 4 5
3. Shift solenoid valve AAT- 3 5 0
4. Shift solenoid valve BAT- 3 5 6
5. Control valve assemblyAT- 4 0 4
OFF vehicle6. High clutchAT- 4 6 97. Brake bandAT- 4 9 7
Failure to change gear from “D2 ” to
“D
1 ” or from “D3 ” to “D1 ”.ON vehicle1. Fluid levelAT- 2 5 6
2. Accelerator pedal position (APP) sensorAT- 3 4 5
3. Shift solenoid valve AAT- 3 5 0
4. Shift solenoid valve BAT- 3 5 6
5. Control valve assemblyAT- 4 0 4
OFF vehicle6. Low one-way clutchAT- 4 1 6
,
AT- 4 2 3
7. High clutchAT- 4 6 9
8. Brake bandAT- 4 9 7
Symptom Condition Diagnostic Item Reference Page
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-283
[EXC.F/EURO-OBD]
D
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G
H
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MA
B
AT
Races extremely fast or slips in
changing from “D
4 ” or “D3 ” to “D1 ”
when depressing pedal.ON vehicle1. Fluid levelAT- 2 5 6
2. Accelerator pedal position (APP) sensorAT- 3 4 5
3. Line pressure testAT- 2 6 0
4. Line pressure solenoid valveAT- 3 8 7
5. Shift solenoid valve AAT- 3 5 0
6. Shift solenoid valve BAT- 3 5 6
7. Control valve assemblyAT- 4 0 4
OFF vehicle8. Forward clutchAT- 4 7 59. Forward one-way clutchAT- 4 1 6
10. Low one-way clutchAT- 4 1 6,
AT- 4 2 3
Vehicle will not run in any position.ON vehicle1. Fluid levelAT- 2 5 6
2. Control cable adjustmentAT- 4 0 9
3. Line pressure testAT- 2 6 0
4. Line pressure solenoid valveAT- 3 8 7
OFF vehicle5. Oil pumpAT- 4 4 36. Torque converterAT- 4 2 3
7. Parking componentsAT- 4 1 6
Transaxle noise in “D”, “2”, “1” and “R”
positions.ON vehicle 1. Fluid levelAT- 2 5 6
OFF vehicle 2. Torque converterAT- 4 2 3
Failure to change from “D3 ” to “22 ”
when changing lever into “2” position.
AT- 3 1 9ON vehicle1. Accelerator pedal position (APP) sensorAT- 3 4 52. Shift solenoid valve BAT- 3 5 6
3. Control valve assemblyAT- 4 0 4
4. Control cable adjustmentAT- 4 0 9
OFF vehicle 5. Brake bandAT- 4 9 7
Gear change from “22 ” to “23 ” in “2”
position.ON vehicle1. PNP switchAT- 3 2 4
2. Control cable adjustmentAT- 4 0 9
Engine brake does not operate in “1”
position.
AT- 3 1 7ON vehicle1. PNP switchAT- 3 2 4
2. Control cable adjustmentAT- 4 0 9
3. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 3 3 2, AT-339
4. Control valve assemblyAT- 4 0 4
5. Overrun clutch solenoid valveAT- 3 6 2
OFF vehicle6. Overrun clutchAT- 4 7 57. Low & reverse brakeAT- 4 8 3
Gear change from “11 ” to “12 ” in “1”
position.ON vehicle1. PNP switchAT- 3 2 4
2. Control cable adjustmentAT- 4 0 9
Does not change from “12 ” to “11 ” in
“1” position.ON vehicle1. PNP switchAT- 3 2 4
2. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 3 3 2, AT-339
3. Shift solenoid valve AAT- 3 5 0
4. Control valve assemblyAT- 4 0 4
OFF vehicle5. Low one-way clutchAT- 4 1 6
,
AT- 4 2 3
6. Brake bandAT- 4 9 7
7. Low & reverse brakeAT- 4 8 3
Symptom Condition Diagnostic Item Reference Page
AT-284
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Large shock changing from “12 ” to “11
” in “1” position.ON vehicle 1. Control valve assemblyAT-404
OFF vehicle 2. Low & reverse brakeAT-483
Transaxle overheats. ON vehicle1. Fluid levelAT-256
2. Engine idling rpmEC-558
3. Accelerator pedal position (APP) sensorAT-345
4. Line pressure testAT-260
5. Line pressure solenoid valveAT-387
6. Control valve assemblyAT-404
Transaxle overheats. OFF vehicle7. Oil pumpAT-443
8. Reverse clutchAT-464
9. High clutchAT-469
10. Brake bandAT-497
11. Forward clutchAT-475
12. Overrun clutchAT-475
13. Low & reverse brakeAT-483
14. Torque converterAT-423
ATF shoots out during operation.
White smoke emitted from exhaust
pipe during operation.ON vehicle 1. Fluid levelAT-256
OFF vehicle2. Reverse clutchAT-464
3. High clutchAT-469
4. Brake bandAT-497
5. Forward clutchAT-475
6. Overrun clutchAT-475
7. Low & reverse brakeAT-483
Offensive smell at fluid charging pipe.ON vehicle 1. Fluid levelAT-256OFF vehicle2. Torque converterAT-423
3. Oil pumpAT-443
4. Reverse clutchAT-464
5. High clutchAT-469
6. Brake bandAT-497
7. Forward clutchAT-475
8. Overrun clutchAT-475
9. Low & reverse brakeAT-483
Torque converter is not locked up. ON vehicle1. Accelerator pedal position (APP) sensorAT-345
2. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT-332, AT-339
3. Engine speed signalAT-382
4. A/T fluid temp sen circ and TCM pow
sourAT-374
5. Line pressure testAT-260
6. Torque converter clutch solenoid valveAT-368
7. Control valve assemblyAT-404
Torque converter is not locked up. OFF vehicle 8. Torque converterAT-423
Symptom Condition Diagnostic Item Reference Page
TROUBLE DIAGNOSES FOR SYMPTOMS
AT-295
[EXC.F/EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
In “N” Position, Vehicle MovesECS00EBH
SYMPTOM:
Vehicle moves forward or backward when selecting “N” position.
1. ADJUST CONTROL CABLE
Check control cable. Refer to AT- 4 0 9 , "
CONTROL CABLE ADJUST-
MENT" .
OK or NG
OK >> GO TO 2.
NG >> Adjust control cable. Refer to AT- 4 0 9 , "
CONTROL
CABLE ADJUSTMENT" .
2. CHECK A/T FLUID LEVEL
Check A/T fluid level. Refer to AT- 1 6 , "
Checking A/T Fluid" .
OK or NG
OK >> GO TO 3.
NG >> Refill ATF.
3. CHECK A/T FLUID CONDITION
1. Remove oil pan. Refer to AT- 4 0 4 , "
COMPONENTS" .
2. Check A/T fluid condition. Refer to AT- 2 5 6 , "
FLUID CONDITION
CHECK" .
OK or NG
OK >> GO TO 4.
NG >> 1. Disassemble A/T. Refer to AT- 4 2 4 , "
Disassembly" .
2. Check the following items:
–Forward clutch assembly. Refer to AT- 4 7 5 , "Forward
and Overrun Clutches" .
–Overrun clutch assembly. Refer to AT- 4 7 5 , "Forward
and Overrun Clutches" .
–Reverse clutch assembly. Refer to AT- 4 6 4 , "Reverse
Clutch" .
4. CHECK SYMPTOM
Check again. Refer to AT- 2 6 4 , "
2. CHECK AT IDLE" .
OK or NG
OK >>INSPECTION END
NG >> 1. Perform TCM input/output signal inspection. Refer to AT- 2 8 6 , "
TCM Terminals and Reference
Va l u e" .
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
SAT023JB
SAT638A
SAT171B
TROUBLE DIAGNOSES FOR SYMPTOMS
AT-297
[EXC.F/EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
Vehicle Does Not Creep Backward In “R” PositionECS00EBJ
SYMPTOM:
Vehicle does not creep backward when selecting “R” position.
1. CHECK A/T FLUID LEVEL
Check A/T fluid level. Refer to AT- 1 6 , "
Checking A/T Fluid" .
OK or NG
OK >> GO TO 2.
NG >> Refill ATF.
2. CHECK LINE PRESSURE
Check line pressure at idle with selector lever in R position. Refer to
AT- 2 6 0 , "
Line Pressure Test" .
OK or NG
OK >> GO TO 3.
NG >> 1. Remove control valve assembly. Refer to AT- 4 0 4 ,
"Control Valve Assembly and Accumulators" .
2. Check the following items:
–Valves to control line pressure (Pressure regulator
valve, pressure modifier valve, pilot valve and pilot fil-
ter)
–Line pressure solenoid valve
3. Disassemble A/T. Refer to AT- 4 2 4 , "
Disassembly" .
4. Check the following item:
–Oil pump assembly. Refer to AT- 4 4 3 , "Oil Pump" .
3. CHECK STALL TEST
Check stall revolution with selector lever in 1 and R positions.
Refer to AT- 2 5 7 , "
Stal l Te st" .
OK or NG
OK >> GO TO 4.
OK in “1” position, NG in R position>>1.Disassemble A/T. Refer to
AT- 4 2 4 , "
Disassembly" .
2. Check the following items:
–Reverse clutch assembly. Refer to AT- 4 6 4 , "Reverse
Clutch" .
–Low & reverse brake assembly. Refer to AT- 4 8 3 , "Low
& Reverse Brake" .
NG in both “1” and “R” positions>>GO TO 6.
SAT638A
SAT494G
SAT493G
TROUBLE DIAGNOSES FOR SYMPTOMS
AT-299
[EXC.F/EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
Vehicle Does Not Creep Forward In “D”, “2” Or “1” PositionECS00EBK
SYMPTOM:
Vehicle does not creep forward when selecting “D”, “2” or “1” position.
1. CHECK A/T FLUID LEVEL
Check A/T fluid level. Refer to AT- 1 6 , "
Checking A/T Fluid" .
OK or NG
OK >> GO TO 2.
NG >> Refill ATF.
2. CHECK LINE PRESSURE
Check line pressure at idle with selector lever in D position. Refer to
AT- 2 6 0 , "
Line Pressure Test" .
OK or NG
OK >> GO TO 3.
NG >> 1. Remove control valve assembly. Refer to AT- 4 0 4 ,
"Control Valve Assembly and Accumulators" .
2. Check the following items:
–Valves to control line pressure (Pressure regulator
valve, pressure modifier valve, pilot valve and pilot fil-
ter)
–Line pressure solenoid valve
3. Disassemble A/T. Refer to AT- 4 2 4 , "
Disassembly" .
4. Check the following item:
–Oil pump assembly. Refer to AT- 4 4 3 , "Oil Pump" .
3. CHECK STALL TEST
Check stall revolution with selector lever in D position. Refer to AT-
257, "Stall Test" .
OK or NG
OK >> GO TO 4.
NG >> GO TO 6.
SAT638A
SAT494G
SAT493G