EC-878
[QR (WITHOUT EURO-OBD)]
IGNITION SIGNAL
3. CHECK OVERALL FUNCTION
Without CONSULT-II
1. Let engine idle.
2. Read the voltage signal between ECM terminals 60, 61, 79, 80
and ground with an oscilloscope.
3. Verify that the oscilloscope screen shows the signal wave as
shown below.
NOTE:
The pulse cycle changes depending on rpm at idle.
OK or NG
OK >>INSPECTION END
NG >> GO TO 12.
4. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-I
1. Turn ignition switch ON.
2. Check voltage between ECM terminals 119, 120 and ground
with CONSULT-II or tester.
OK or NG
OK >> GO TO 5.
NG >> Go to EC-625, "
POWER SUPPLY AND GROUND CIR-
CUIT" .
MBIB0033E
PBIB0521E
Voltage: Battery voltage
MBIB0034E
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-87
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
No creep at all.
AT- 2 1 0
and AT-212
ON vehicle1. Fluid levelAT- 6 42. Line pressure testAT-387
3. Control valve assemblyAT-404
OFF vehicle4. Forward clutchAT-4755. Oil pumpAT-443
6. Torque converterAT-423
Failure to change gear from “D1 ” to
“D
2 ”.ON vehicle1. Control cable adjustmentAT-409
2. Shift solenoid valve AAT-161
3. Control valve assemblyAT-404
4. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 11 2, AT- 1 9 2
5. Accelerator pedal position (APP) sensorAT-173
OFF vehicle 6. Brake bandAT-497
Failure to change gear from “D2 ” to
“D
3 ”.ON vehicle1. Control cable adjustmentAT-409
2. Shift solenoid valve BAT-167
3. Control valve assemblyAT-404
4. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 11 2, AT- 1 9 2
5. Accelerator pedal position (APP) sensorAT-173
OFF vehicle6. High clutchAT-4697. Brake bandAT-497
Failure to change gear from “D3 ” to
“D
4 ”.ON vehicle1. PNP switchAT-100
2. Overdrive control switchAT-237
3. Shift solenoid valve AAT-161
4. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 11 2, AT- 1 9 2
5. A/T fluid temperature sensorAT-184
OFF vehicle 6. Brake bandAT-497
Too high a gear change point from
“D
1 ” to “D2 ”, from “D2 ” to “D3 ”,
from “D
3 ” to “D4 ”.
AT- 2 1 7
, AT- 2 2 0 and AT-222
ON vehicle1. Accelerator pedal position (APP) sensorAT-173
2. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 11 2, AT- 1 9 2
3. Shift solenoid valve AAT-161
4. Shift solenoid valve BAT-167
Gear change directly from “D1 ” to
“D
3 ” occurs.ON vehicle1. Fluid levelAT- 6 42. Accumulator servo releaseAT-404
OFF vehicle 3. Brake bandAT-497
Engine stops when shifting lever
into “R”, “D”, “2” and “1”.ON vehicle1. Engine idling rpm EC-45
2. Fluid levelAT- 6 4
3. Torque converter clutch solenoid valveAT-148
4. Control valve assemblyAT-404
OFF vehicle 5. Torque converterAT-423
Symptom Condition Diagnostic Item Reference Page
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-89
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
Vehicle braked by gear change from
“D
3 ” to “D4 ”.ON vehicle 1. Fluid levelAT- 6 4OFF vehicle2. Overrun clutchAT-3623. Forward one-way clutchAT-416
4. Reverse clutchAT-464
Maximum speed not attained.
Acceleration poor.ON vehicle1. Fluid levelAT- 6 4
2. PNP switchAT-100
3. Overdrive control switchAT-237
4. Accelerator pedal position (APP) sensorAT-173
5. Shift solenoid valve AAT-161
6. Shift solenoid valve BAT-167
7. Control valve assemblyAT-404
OFF vehicle8. Reverse clutchAT-464
9. High clutchAT-469
10. Brake bandAT-497
11. Low & reverse brakeAT-483
12. Oil pumpAT-443
13. Torque converterAT-423
Failure to change gear from “D4 ” to
“D
3 ”.ON vehicle1. Fluid levelAT- 6 4
2. Accelerator pedal position (APP) sensorAT-173
3. Overrun clutch solenoid valveAT-178
4. Shift solenoid valve AAT-161
5. Line pressure solenoid valveAT-154
6. Control valve assemblyAT-404
OFF vehicle7. Brake bandAT-4978. Overrun clutchAT-475
Failure to change gear from “D3 ” to
“D
2 ” or from “D4 ” to “D2 ”.ON vehicle1. Fluid levelAT- 6 4
2. Accelerator pedal position (APP) sensorAT-173
3. Shift solenoid valve AAT-161
4. Shift solenoid valve BAT-167
5. Control valve assemblyAT-404
OFF vehicle6. High clutchAT-4697. Brake bandAT-497
Failure to change gear from “D2 ” to
“D
1 ” or from “D3 ” to “D1 ”.ON vehicle1. Fluid levelAT- 6 4
2. Accelerator pedal position (APP) sensorAT-173
3. Shift solenoid valve AAT-161
4. Shift solenoid valve BAT-167
5. Control valve assemblyAT-404
OFF vehicle6. Low one-way clutchAT- 4 1 6
, AT-423
7. High clutchAT-469
8. Brake bandAT-497
Gear change shock felt during
deceleration by releasing accelera-
tor pedal.ON vehicle1. Accelerator pedal position (APP) sensorAT-1732. Line pressure testAT- 6 8
3. Overrun clutch solenoid valveAT-178
4. Control valve assemblyAT-404
Symptom Condition Diagnostic Item Reference Page
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-91
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
Races extremely fast or slips in
changing from “D
4 ” or “D3 ” to “D1 ”
when depressing pedal.ON vehicle1. Fluid levelAT- 6 4
2. Accelerator pedal position (APP) sensorAT-173
3. Line pressure testAT- 6 8
4. Line pressure solenoid valveAT-154
5. Shift solenoid valve AAT-161
6. Shift solenoid valve BAT-167
7. Control valve assemblyAT-404
OFF vehicle8. Forward clutchAT-4759. Forward one-way clutchAT-416
10. Low one-way clutchAT- 4 1 6, AT-423
Vehicle will not run in any position.ON vehicle1. Fluid levelAT- 6 4
2. Control cable adjustmentAT-409
3. Line pressure testAT- 6 8
4. Line pressure solenoid valveAT-154
OFF vehicle5. Oil pumpAT-4436. Torque converterAT-423
7. Parking componentsAT-416
Transaxle noise in “D”, “2”, “1” and
“R” positions.ON vehicle 1. Fluid levelAT- 6 4
OFF vehicle 2. Torque converterAT-423
Failure to change from “D3 ” to “22 ”
when changing lever into “2” posi-
tion.
AT- 2 3 2
ON vehicle1. Accelerator pedal position (APP) sensorAT-1732. Shift solenoid valve BAT-167
3. Control valve assemblyAT-404
4. Control cable adjustmentAT-409
Failure to change from “D3 ” to “22 ”
when changing lever into “2” posi-
tion.
AT- 2 3 2
OFF vehicle 5. Brake bandAT-497
Gear change from “22 ” to “23 ” in “2”
position.ON vehicle1. PNP switchAT-100
2. Control cable adjustmentAT-409
Engine brake does not operate in
“1” position.
AT- 2 3 0ON vehicle1. PNP switchAT-100
2. Control cable adjustmentAT-409
3. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 11 2, AT- 1 9 2
4. Control valve assemblyAT-404
5. Overrun clutch solenoid valveAT-178
OFF vehicle6. Overrun clutchAT-4757. Low & reverse brakeAT-483
Gear change from “11 ” to “12 ” in “1”
position.ON vehicle1. PNP switchAT-100
2. Control cable adjustmentAT-409
Symptom Condition Diagnostic Item Reference Page
AT-92
[EURO-OBD]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Does not change from “12 ” to “11 ”
in “1” position.ON vehicle1. PNP switchAT-100
2. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 11 2, AT- 1 9 2
3. Shift solenoid valve AAT-161
4. Control valve assemblyAT-404
OFF vehicle5. Low one-way clutchAT-416
, AT- 4 2 3
6. Brake bandAT-497
7. Low & reverse brakeAT-483
Large shock changing from “12 ” to
“1
1 ” in “1” position.ON vehicle 1. Control valve assemblyAT-404OFF vehicle 2. Low & reverse brakeAT-483
Transaxle overheats. ON vehicle1. Fluid levelAT- 6 4
2. Engine idling rpm EC-45
3. Accelerator pedal position (APP) sensorAT-173
4. Line pressure testAT- 6 8
5. Line pressure solenoid valveAT-154
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- 6 4
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- 6 4
OFF 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
Symptom Condition Diagnostic Item Reference Page
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-279
[EXC.F/EURO-OBD]
D
E
F
G
H
I
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
E
F
G
H
I
J
K
L
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