2008 NISSAN LATIO service

TROUBLE DIAGNOSIS
AT-59
< SERVICE INFORMATION >
D
E
F
G
H
I
J
K
L
MA
B
AT
N
O
P
Read gear position, throttle opening and vehicle speed.
Refer to AT-73, "
CONSULT-III Function (A/T)" .
Does A/T shift from D
2 to D3 at the specified speed?
YES >> GO TO 4.
NO >> • Mark the box on the AT-40, "
How to Perform Trouble
Diagnosis for Quick and Accurate Repair" .
•Go to AT-186, "
A/T Does Not Shift: D2→ D3" .
• Continue “Road Test”.
4.CHECK SHIFT-UP (D3 TO D4 ) AND ENGINE BRAKE
Release accelerator pedal after shifting from D
2 to D3 .
Read gear position, throttle opening and vehicle speed.
Refer to AT-73, "
CONSULT-III Function (A/T)" .
Does A/T shift from D
3 to D4 and does vehicle decelerate by engine
brake?
YES >> 1. Stop vehicle.
2. Go to AT-59, "
Cruise Test - Part 3" .
NO >> • Mark the box on the AT-40, "
How to Perform Trouble
Diagnosis for Quick and Accurate Repair" .
•Go to AT-188, "
A/T Does Not Shift: D3→ D4" .
• Continue “Road Test”.
Cruise Test - Part 3INFOID:0000000001703188
1.CHECK SHIFT-DOWN (D4 TO D3 )
1. Push overdrive control switch. (OD OFF indicator lamp is off.)
2. Move selector lever to “D” position.
3. Accelerate vehicle using half throttle to D
4 .
4. Release accelerator pedal.
SAT960I
SAT405H
SAT812A
SAT813A

AT-60
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
5. Push overdrive control switch. (OD OFF indicator lamp is on.)
Read gear position and vehicle speed. Refer to AT-73,
"CONSULT-III Function (A/T)" .
Does A/T shift from D
4 to D3 (OD OFF)?
YES >> GO TO 2.
NO >> • Mark the box on the AT-40, "
How to Perform Trouble
Diagnosis for Quick and Accurate Repair" .
•Go to AT-193, "
A/T Does Not Shift: D4→ D3, When OD
OFF" .
• Continue “Road Test”.
2.CHECK ENGINE BRAKE
Check engine brake.
Does vehicle decelerate by engine brake?
YES >> GO TO 3.
NO >> • Mark the box on the AT-40, "
How to Perform Trouble
Diagnosis for Quick and Accurate Repair" .
•Go to AT-197, "
Vehicle Does Not Decelerate by
Engine Brake" .
• Continue “Road Test”.
3.CHECK SHIFT-DOWN (D3 TO 22 )
Move selector lever from “D” to “2” position while driving in D
3 (OD
OFF).
Read gear position. Refer to AT-73, "
CONSULT-III Function
(A/T)" .
Does A/T shift from D
3 (OD OFF) to 22 ?
YES >> GO TO 4.
NO >> • Mark the box on the AT-40, "
How to Perform Trouble
Diagnosis for Quick and Accurate Repair" .
•Go to AT-194, "
A/T Does Not Shift: D3→ 22, When
Selector Lever "D" → "2" Position" .
• Continue “Road Test”.
4.CHECK ENGINE BRAKE
Check engine brake.
Does vehicle decelerate by engine brake?
YES >> GO TO 5.
NO >> • Mark the box on the AT-40, "
How to Perform Trouble
Diagnosis for Quick and Accurate Repair" .
•Go to AT-197, "
Vehicle Does Not Decelerate by
Engine Brake" .
• Continue “Road Test”.
5.CHECK SHIFT-DOWN (22 TO 11 )
SCIA5469E
SCIA5469E
SAT791GA
SAT791GA

TROUBLE DIAGNOSIS
AT-61
< SERVICE INFORMATION >
D
E
F
G
H
I
J
K
L
MA
B
AT
N
O
P
Move selector lever from “2” to “1” position while driving in 22 .
Read gear position. Refer to AT-73, "
CONSULT-III Function
(A/T)" .
Does A/T shift from 2
2 to 11 position?
YES >> GO TO 6.
NO >> • Mark the box on the AT-40, "
How to Perform Trouble
Diagnosis for Quick and Accurate Repair" .
•Go to AT-195, "
A/T Does Not Shift: 22→ 11, When
Selector Lever "2" → "1" Position" .
• Continue “Road Test”.
6.CHECK ENGINE BRAKE
Check engine brake.
Does vehicle decelerate by engine brake?
YES >> 1. Stop vehicle.
2. Perform self-diagnosis. Refer to AT-73, "
CONSULT-
III Function (A/T)" , AT-78, "Diagnosis Procedure
without CONSULT-III" .
NO >> • Mark the box on the AT-40, "
How to Perform Trouble
Diagnosis for Quick and Accurate Repair" .
•Go to AT-197, "
Vehicle Does Not Decelerate by
Engine Brake" .
• Stop “Road Test”.
Vehicle Speed at Which Gear Shifting OccursINFOID:0000000001703189
• At half throttle, the accelerator opening is 4/8 of the full opening.
Vehicle Speed at Which Lock-up Occurs/ReleasesINFOID:0000000001703190
Symptom ChartINFOID:0000000001703191
Numbers are arranged in order of inspection.
SAT778B
SAT778B
Throttle positionVehicle speed km/h (MPH)
D1 → D2D2 → D3D3 → D4D4 → D3D3 → D2D2 → D1
Full throttle51 - 59
(32 - 37)97 - 105
(60 - 65)154 - 162
(96 - 101)150 - 158
(93 - 98)87 - 95
(54 - 59)40 - 48
(25 - 30)
Half throttle34 - 42
(21 - 26)62 - 70
(39 - 43)124 - 132
(77 - 82)69 - 77
(43 - 48)36 - 44
(22 - 27)19 - 27
(12 - 17)
Throttle position Selector lever positionVehicle speed km/h (MPH)
Lock-up ON Lock-up OFF
2.0/8“D” position 86 - 94 (53 - 58) 59 - 67 (37 - 42)
“D” position (OD OFF) 86 - 94 (53 - 58) 83 - 91 (52 - 57)

AT-62
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
Perform inspections starting with number one and work up.
Items Symptom Condition Diagnostic item Reference page
No Lock-up Engage-
ment/TCC InoperativeTorque converter is
not locked up.ON vehicle1. Accelerator pedal position sensorEC-493
2. Vehicle speed sensor·A/T (Revolution sensor)
and vehicle speed sensor·MTRAT- 9 6, AT- 1 4 9
3. Engine speed signalAT- 1 0 1
4. A/T fluid temperature sensorAT- 9 1
5. Line pressure testAT- 4 8
6. Torque converter clutch solenoid valveAT- 11 9
7. Control valve assemblyAT- 2 1 6
OFF vehicle 8. Torque converterAT- 2 4 0
Torque converter
clutch piston slip.ON vehicle1. A/T fluid levelMA-22
2. Accelerator pedal position sensorEC-493
3. Line pressure testAT- 4 8
4. Torque converter clutch solenoid valveAT- 11 9
5. Line pressure solenoid valveAT- 1 2 9
6. Control valve assemblyAT- 2 1 6
OFF vehicle 7. Torque converterAT- 2 4 0
Lock-up point is ex-
tremely high or low.ON vehicle1. Accelerator pedal position sensorEC-4932. Vehicle speed sensor·A/T (Revolution sensor)
and vehicle speed sensor·MTRAT- 9 6, AT- 1 4 9
3. Torque converter clutch solenoid valveAT- 11 9
4. Control valve assemblyAT- 2 1 6
Shift ShockSharp shock in shift-
ing from “N” to “D” po-
sition.ON vehicle1. Engine idling speedEC-73
2. Accelerator pedal position sensorEC-493
3. Line pressure testAT- 4 8
4. A/T fluid temperature sensorAT- 9 1
5. Engine speed signalAT- 1 0 1
6. Line pressure solenoid valveAT- 1 2 9
7. Control valve assemblyAT- 2 1 6
8. Accumulator N-DAT- 2 1 6
OFF vehicle 9. Forward clutchAT- 2 8 8
Too sharp a shock in
changing from D
1 to
D
2 .ON vehicle1. Accelerator pedal position sensorEC-493
2. Line pressure testAT- 4 8
3. Accumulator servo releaseAT- 2 1 6
4. Control valve assemblyAT- 2 1 6
5. A/T fluid temperature sensorAT- 9 1
OFF vehicle 6. Brake bandAT- 3 0 7

TROUBLE DIAGNOSIS
AT-63
< SERVICE INFORMATION >
D
E
F
G
H
I
J
K
L
MA
B
AT
N
O
P
Shift ShockToo sharp a shock in
changing from D
2 to
D
3 .ON vehicle1. Accelerator pedal position sensorEC-493
2. Line pressure testAT- 4 8
3. Control valve assemblyAT- 2 1 6
OFF vehicle4. High clutchAT- 2 8 45. Brake bandAT- 3 0 7
Too sharp a shock in
changing from D
3 to
D
4 .ON vehicle1. Accelerator pedal position sensorEC-493
2. Line pressure testAT- 4 8
3. Control valve assemblyAT- 2 1 6
OFF vehicle4. Brake bandAT- 3 0 75. Overrun clutchAT- 2 8 8
6. Forward one-way clutchAT- 2 9 9
Gear change shock
during deceleration by
releasing accelerator
pedal.ON vehicle1. Accelerator pedal position sensorEC-4932. Line pressure testAT- 4 8
3. Overrun clutch solenoid valveAT- 1 4 4
4. Control valve assemblyAT- 2 1 6
Large shock in chang-
ing from 1
2 to 11 in
“1” position.ON vehicle 1. Control valve assemblyAT- 2 1 6OFF vehicle 2. Low & reverse brakeAT- 2 9 5
Improper Shift TimingToo high a gear
change point from D
1
to D
2 , from D2 to D3 ,
from D
3 to D4 .ON vehicle1. Accelerator pedal position sensorEC-493
2. Vehicle speed sensor·A/T (Revolution sensor)
and vehicle speed sensor·MTRAT- 9 6, AT- 1 4 9
3. Shift solenoid valve AAT- 1 3 4
4. Shift solenoid valve BAT- 1 3 9
Gear change directly
from D
1 to D3 occurs.ON vehicle1. A/T fluid levelMA-222. Accumulator servo releaseAT- 2 1 6
OFF vehicle 3. Brake bandAT- 3 0 7
Too high a change
point from D
4 to D3 ,
from D
3 to D 2 , from
D
2 to D1 .ON vehicle1. Accelerator pedal position sensorEC-493
2. Vehicle speed sensor·A/T (Revolution sensor)
and vehicle speed sensor·MTRAT- 9 6, AT- 1 4 9
Kickdown does not
operate when de-
pressing accelerator
pedal in D
4 within
kickdown vehicle
speed.ON vehicle1. Accelerator pedal position sensorEC-493
2. Vehicle speed sensor·A/T (Revolution sensor)
and vehicle speed sensor·MTRAT- 9 6, AT- 1 4 9
3. Shift solenoid valve AAT- 1 3 4
4. Shift solenoid valve BAT- 1 3 9
Kickdown operates or
engine overruns when
depressing accelera-
tor pedal in D
4 be-
yond kickdown
vehicle speed limit.ON vehicle1. Vehicle speed sensor·A/T (Revolution sensor)
and vehicle speed sensor·MTRAT- 9 6
, AT- 1 4 9
2. Accelerator pedal position sensorEC-493
3. Shift solenoid valve AAT- 1 3 4
4. Shift solenoid valve BAT- 1 3 9
Gear change from 22
to 2
3 in “2” position.ON vehicle1. PNP switch adjustmentAT- 2 1 92. Control cable adjustmentAT- 2 0 7
Gear change from 11
to 1
2 in “1” position.ON vehicle1. PNP switch adjustmentAT- 2 1 92. Control cable adjustmentAT- 2 0 7
Items Symptom Condition Diagnostic item Reference page

AT-64
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
No Down ShiftFailure to change
gear from D
4 to D3 .ON vehicle1. A/T fluid levelMA-22
2. Accelerator pedal position sensorEC-493
3. Overrun clutch solenoid valveAT- 1 4 4
4. Shift solenoid valve A AT- 1 3 4
5. Line pressure solenoid valveAT- 1 2 9
6. Control valve assemblyAT- 2 1 6
OFF vehicle7. Brake bandAT- 3 0 78. Overrun clutchAT- 2 8 8
Failure to change
gear from D
3 to D2 or
from D
4 to D2 .ON vehicle1. A/T fluid levelMA-22
2. Accelerator pedal position sensorEC-493
3. Shift solenoid valve AAT- 1 3 4
4. Shift solenoid valve BAT- 1 3 9
5. Control valve assemblyAT- 2 1 6
OFF vehicle6. High clutchAT- 2 8 47. Brake bandAT- 3 0 7
Failure to change
gear from D
2 to D1 or
from D
3 to D1 .ON vehicle1. A/T fluid levelMA-22
2. Accelerator pedal position sensorEC-493
3. Shift solenoid valve AAT- 1 3 4
4. Shift solenoid valve BAT- 1 3 9
5. Control valve assemblyAT- 2 1 6
OFF vehicle6. Low one-way clutchAT- 2 4 07. High clutchAT- 2 8 4
8. Brake bandAT- 3 0 7
Failure to change
from D
3 to 22 when
shifting selector lever
into “2” position.
AT- 1 9 4ON vehicle1. Accelerator pedal position sensorEC-4932. Shift solenoid valve BAT- 1 3 9
3. Control valve assembly AT- 2 1 6
4. Control cable adjustmentAT- 2 0 7
OFF vehicle 5. Brake bandAT- 3 0 7
Does not change from
1
2 to 11 in 1st posi-
tion.ON vehicle1. PNP switch adjustmentAT- 2 1 9
2. Vehicle speed sensor·A/T (Revolution sensor)
and vehicle speed sensor·MTRAT- 9 6, AT- 1 4 9
3. Shift solenoid valve AAT- 1 3 4
4. Control valve assemblyAT- 2 1 6
5. Overrun clutch solenoid valveAT- 1 4 4
OFF vehicle6. Overrun clutchAT- 2 8 87. Low & reverse brakeAT- 2 9 5
Items Symptom Condition Diagnostic item Reference page

TROUBLE DIAGNOSIS
AT-65
< SERVICE INFORMATION >
D
E
F
G
H
I
J
K
L
MA
B
AT
N
O
P
No Up ShiftFailure to change
gear from D
1 to D2 .ON vehicle1. Control cable adjustmentAT- 2 0 7
2. Shift solenoid valve AAT- 1 3 4
3. Control valve assemblyAT- 2 1 6
4. Vehicle speed sensor·A/T (Revolution sensor)
and vehicle speed sensor·MTRAT- 9 6, AT- 1 4 9
5. Accelerator pedal position sensorEC-493
OFF vehicle 6. Brake bandAT- 3 0 7
Failure to change
gear from D
2 to D3 .ON vehicle1. Control cable adjustmentAT- 2 0 7
2. Shift solenoid valve BAT- 1 3 9
3. Control valve assemblyAT- 2 1 6
4. Vehicle speed sensor·A/T (Revolution sensor)
and vehicle speed sensor·MTRAT- 9 6, AT- 1 4 9
5. Accelerator pedal position sensorEC-493
OFF vehicle6. High clutchAT- 2 8 47. Brake bandAT- 3 0 7
Failure to change
gear from D
3 to D4 .ON vehicle 1. PNP switch adjustmentAT- 2 1 9
2. Overdrive control switchAT- 1 6 7
3. Control cable adjustmentAT- 2 0 7
4. Shift solenoid valve AAT- 1 3 4
5. Vehicle speed sensor·A/T (Revolution sensor)
and vehicle speed sensor·MTRAT- 9 6, AT- 1 4 9
6. A/T fluid temperature sensorAT- 9 1
OFF vehicle 7. Brake band AT- 3 0 7
A/T does not shift to
D
4 when driving with
OD ON. (OD OFF in-
dicator lamp is off.)ON vehicle1. Accelerator pedal position sensorEC-493
2. PNP switch adjustmentAT- 2 1 9
3. Overdrive control switchAT- 1 6 7
4. Vehicle speed sensor·A/T (Revolution sensor)
and vehicle speed sensor·MTRAT- 9 6, AT- 1 4 9
5. Shift solenoid valve AAT- 1 3 4
6. Overrun clutch solenoid valveAT- 1 4 4
7. Control valve assemblyAT- 2 1 6
8. A/T fluid temperature sensorAT- 9 1
9. Line pressure solenoid valveAT- 1 2 9
OFF vehicle10. Brake bandAT- 3 0 711. Overrun clutchAT- 2 8 8
Items Symptom Condition Diagnostic item Reference page

AT-66
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
Slips/Will Not EngageVehicle will not run in
“R” position (but runs
in “D”, “2” and “1” po-
sitions). Clutch slips.
Very poor accelera-
tion.ON vehicle1. Control cable adjustmentAT- 2 0 7
2. Stall testAT- 4 8
3. Line pressure testAT- 4 8
4. Line pressure solenoid valveAT- 1 2 9
5. Control valve assemblyAT- 2 1 6
OFF vehicle6. Reverse clutchAT- 2 7 9
7. High clutchAT- 2 8 4
8. Forward clutchAT- 2 8 8
9. Overrun clutchAT- 2 8 8
10. Low & reverse brakeAT- 2 9 5
Vehicle will not run in
“D” and “2” positions
(but runs in “1” and
“R” positions).ON vehicle 1. Control cable adjustmentAT- 2 0 7
OFF vehicle 2. Low one-way clutchAT- 2 4 0
Vehicle will not run in
“D”, “1”, “2” positions
(but runs in R posi-
tion). Clutch slips.
Very poor accelera-
tion.ON vehicle1. A/T fluid levelMA-22
2. Stall testAT- 4 8
3. Line pressure testAT- 4 8
4. Line pressure solenoid valveAT- 1 2 9
5. Control valve assemblyAT- 2 1 6
6. Accumulator N-DAT- 2 1 6
OFF vehicle7. Reverse clutchAT- 2 7 9
8. High clutchAT- 2 8 4
9. Forward clutchAT- 2 8 8
10. Forward one-way clutchAT- 2 9 9
11. Low one-way clutchAT- 2 4 0
Clutches or brakes
slip somewhat in start-
ing.ON vehicle1. A/T fluid levelMA-22
2. Control cable adjustmentAT- 2 0 7
3. Accelerator pedal position sensorEC-493
4. Line pressure testAT- 4 8
5. Line pressure solenoid valveAT- 1 2 9
6. Control valve assemblyAT- 2 1 6
7. Accumulator N-DAT- 2 1 6
OFF vehicle8. Forward clutchAT- 2 8 8
9. Reverse clutchAT- 2 7 9
10. Low & reverse brakeAT- 2 9 5
11 . O i l p u m pAT- 2 6 0
12. Torque converterAT- 2 4 0
Items Symptom Condition Diagnostic item Reference page