NISSAN LATIO 2008 Service Manual Online

TROUBLE DIAGNOSIS
AT-69
< SERVICE INFORMATION >
D
E
F
G
H
I
J
K
L
MA
B
AT
N
O
P
OthersVehicle moves when
changing into “P” po-
sition or parking gear
does not disengage
when shifted out of “P”
position.ON vehicle 1. Control cable adjustmentAT- 2 0 7
OFF vehicle 2. Parking componentsAT- 2 3 0
Vehicle runs in “N” po-
sition.
AT- 1 7 9
ON vehicle 1. Control cable adjustmentAT- 2 0 7
OFF vehicle2. Forward clutchAT- 2 8 83. Reverse clutchAT- 2 7 9
4. Overrun clutchAT- 2 8 8
Vehicle braked when
shifting into “R” posi-
tion.ON vehicle1. A/T fluid levelMA-22
2. Control cable adjustmentAT- 2 0 7
3. Line pressure testAT- 4 8
4. Line pressure solenoid valveAT- 1 2 9
5. Control valve assemblyAT- 2 1 6
OFF vehicle6. High clutchAT- 2 8 47. Brake band AT- 3 0 7
8. Forward clutchAT- 2 8 8
9. Overrun clutchAT- 2 8 8
Excessive creep. ON vehicle 1. Engine idling speedEC-73
Engine stops when
shifting lever into “R”,
“D”, “2” and “1” posi-
tions.ON vehicle1. Engine idling speedEC-732. A/T fluid levelMA-22
3. Torque converter clutch solenoid valveAT- 11 9
4. Control valve assemblyAT- 2 1 6
OFF vehicle 5. Torque converterAT- 2 4 0
Vehicle braked by
gear change from D
1
to D
2 .ON vehicle 1. A/T fluid levelMA-22OFF vehicle2. Reverse clutchAT- 2 7 93. Low & reverse brakeAT- 2 9 5
4. High clutchAT- 2 8 4
5. Low one-way clutchAT- 2 4 0
Vehicle braked by
gear change from D
2
to D
3 .ON vehicle 1. A/T fluid levelMA-22OFF vehicle 2. Brake bandAT- 3 0 7
Vehicle braked by
gear change from D
3
to D
4 .ON vehicle 1. A/T fluid levelMA-22OFF vehicle2. Overrun clutchAT- 2 8 83. Forward one-way clutchAT- 2 9 9
4. Reverse clutchAT- 2 7 9
Items Symptom Condition Diagnostic item Reference page

AT-70
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
OthersMaximum speed not
attained. Poor accel-
eration.ON vehicle1. A/T fluid levelMA-22
2. PNP switch adjustmentAT- 2 1 9
3. Overdrive control switchAT- 1 6 7
4. Accelerator pedal position sensorEC-493
5. Vehicle speed sensor·A/T (Revolution sensor)
and vehicle speed sensor·MTRAT- 9 6, AT- 1 4 9
6. Shift solenoid valve AAT- 1 3 4
7. Shift solenoid valve BAT- 1 3 9
8. Control valve assemblyAT- 2 1 6
OFF vehicle9. Reverse clutchAT- 2 7 9
10. High clutchAT- 2 8 4
11. Brake bandAT- 3 0 7
12. Low & reverse brakeAT- 2 9 5
13. Oil pumpAT- 2 6 0
14. Torque converterAT- 2 4 0
Transaxle noise in
“D”, “2”, “1” and “R”
positions.ON vehicle 1. A/T fluid levelMA-22
OFF vehicle 2. Torque converterAT- 2 4 0
Engine brake does
not operate in “1” po-
sition.ON vehicle1. PNP switch adjustmentAT- 2 1 9
2. Control cable adjustmentAT- 2 0 7
3. Vehicle speed sensor·A/T (Revolution sensor)
and vehicle speed sensor·MTRAT- 9 6, AT- 1 4 9
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
Transaxle overheats.ON vehicle1. A/T fluid levelMA-22
2. Engine idling speedEC-73
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
OFF vehicle7. Oil pumpAT- 2 6 0
8. Reverse clutchAT- 2 7 9
9. High clutchAT- 2 8 4
10. Brake bandAT- 3 0 7
11. Forward clutchAT- 2 8 8
12. Overrun clutchAT- 2 8 8
13. Low & reverse brakeAT- 2 9 5
14. Torque converterAT- 2 4 0
Items Symptom Condition Diagnostic item Reference page

TROUBLE DIAGNOSIS
AT-71
< SERVICE INFORMATION >
D
E
F
G
H
I
J
K
L
MA
B
AT
N
O
P
TCM Terminal and Reference ValueINFOID:0000000001703192
TCM HARNESS CONNECTOR TERMINAL LAYOUT
Terminals and Reference Values for TCM
TCM terminal data are reference values, measured between each terminal and ground.
OthersATF shoots out during
operation.
White smoke emitted
from exhaust pipe
during operation.ON vehicle 1. A/T fluid levelMA-22
OFF vehicle2. Reverse clutchAT- 2 7 9
3. High clutchAT- 2 8 4
4. Brake bandAT- 3 0 7
5. Forward clutchAT- 2 8 8
6. Overrun clutchAT- 2 8 8
7. Low & reverse brakeAT- 2 9 5
Unusual smell at A/T
fluid charging pipe.ON vehicle 1. A/T fluid levelMA-22
OFF vehicle2. Torque converterAT- 2 4 0
3. Oil pumpAT- 2 6 0
4. Reverse clutchAT- 2 7 9
5. High clutchAT- 2 8 4
6. Brake bandAT- 3 0 7
7. Forward clutchAT- 2 8 8
8. Overrun clutchAT- 2 8 8
9. Low & reverse brakeAT- 2 9 5
Items Symptom Condition Diagnostic item Reference page
WCIA0717E
Te r m i n a lWire
colorItem ConditionJudgement stan-
dard (Approx.)
1WLine pressure solenoid
valveWhen releasing accelerator pedal after
warming up engine.1.5 - 3.0 V
When depressing accelerator pedal ful-
ly after warming up engine.0 V
2PLine pressure solenoid
valve (with dropping re-
sistor)When releasing accelerator pedal after
warming up engine.4 - 14 V
When depressing accelerator pedal ful-
ly after warming up engine.0 V
3GRTorque converter clutch
solenoid valveWhen A/T performs lock-up. 8 - 15 V
When A/T does not perform lock-up. 0 V
5 L CAN H — —
6 P CAN L — —
10 R Power supplyWhen turning ignition switch to “ON”. Battery voltage
When turning ignition switch to “OFF”. 0 V

AT-72
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
11 O Shift solenoid valve AWhen shift solenoid valve A operates.
(When driving in “D
1” or “D4”.)Battery voltage
When shift solenoid valve A does not
operate.
(When driving in “D
2” or “D3”.)0 V
12 G Shift solenoid valve BWhen shift solenoid valve B operates.
(When driving in “D
1” or “D2”.)Battery voltage
When shift solenoid valve B does not
operate.
(When driving in “D
3” or “D4”.)0 V
19 R Power supplyWhen turning ignition switch to “ON”. Battery voltage
When turning ignition switch to “OFF”. 0 V
20 VOverrun clutch solenoid
valveWhen overrun clutch solenoid valve op-
erates. (When overrun clutch disen-
gaged. Refer to AT- 1 9
.)Battery voltage
When overrun clutch solenoid valve
does not operate. (When overrun clutch
engaged. Refer to AT- 1 9
.)0 V
25 B Ground Always 0 V
26 Y PNP switch “1” position
and When setting selector lever to “1” posi-
tion.Battery voltage
When setting selector lever to other po-
sitions.0 V
27 G PNP switch “2” positionWhen setting selector lever to “2” posi-
tion.Battery voltage
When setting selector lever to other po-
sitions.0 V
28 GRPower supply
(memory back-up)Always Battery voltage
29 V Revolution sensor When driving at 20 km/h (12 MPH) 150 Hz
30
*1BR CONSULT- III (RX) — —
31
*1Y CONSULT- III (TX) — —
34 LG PNP switch “D” position
and When setting selector lever to “D” posi-
tion.Battery voltage
When setting selector lever to other po-
sitions.0 V
35 SB PNP switch “R” positionWhen setting selector lever to “R” posi-
tion.Battery voltage
When setting selector lever to other po-
sitions.0 V
36 RPNP switch “N” or “P”
positionWhen setting selector lever to “N” or “P”
position.Battery voltage
When setting selector lever to other po-
sitions.0 V
38 GTurbine revolution sen-
sor (power train revolu-
tion sensor)When driving at 20 km/h (12 MPH) 360 Hz Te r m i n a lWire
colorItem ConditionJudgement stan-
dard (Approx.)

TROUBLE DIAGNOSIS
AT-73
< SERVICE INFORMATION >
D
E
F
G
H
I
J
K
L
MA
B
AT
N
O
P
*1: These terminals are connected to the data link connector.
*2: These terminals are connected to the ECM.
CONSULT-III Function (A/T)INFOID:0000000001703193
CONSULT-III can display each diagnostic item using the diagnostic test models shown following.
FUNCTION
CONSULT-III REFERENCE VALUE
NOTICE:
1. The CONSULT-III electrically displays shift timing and lock-up timing (that is, operation timing of each
solenoid).
Check for time difference between actual shift timing and the CONSULT-III display. If the difference is
noticeable, mechanical parts (except solenoids, sensors, etc.) may be malfunctioning. Check mechanical
parts using applicable diagnostic procedures.
2. Shift schedule (which implies gear position) displayed on CONSULT-III and that indicated in Service Man-
ual may differ slightly. This occurs because of the following reasons:
- Actual shift schedule has more or less tolerance or allowance,
- Shift schedule indicated in Service Manual refers to the point where shifts start, and
- Gear position displayed on CONSULT-III indicates the point where shifts are completed.
3. Shift solenoid valve “A” or “B” is displayed on CONSULT-III at the start of shifting. Gear position is dis-
played upon completion of shifting (which is computed by TCM).
39*2L Engine speed signal
and Refer to EC-102 .
40 O Vehicle speed sensorWhen driving vehicle at 2 to 3 km/h (1 to
2 MPH) for 1 m (3 ft) or more.Voltage varies
between less
than 0 V and
more than 4.5 V
42 B Sensor ground Always 0 V
47 BRA/T fluid temperature
sensor
and When A/T fluid temperature is 20°C
(68°F).1.5 V
When A/T fluid temperature is 80°C
(176°F).0.5 V
48 B Ground Always 0 V Te r m i n a lWire
colorItem ConditionJudgement stan-
dard (Approx.)
Diagnostic test mode Function
Work supportThis mode enables a technician to adjust some devices faster and more accurately by following the in-
dications on CONSULT-III.
Self-diagnostic results Self-diagnostic results can be read and erased quickly.
Data monitor Input/Output data in the TCM can be read.
CAN diagnostic support mon-
itorThe results of transmit/receive diagnosis of CAN communication can be read.
Function test Performed by CONSULT-III instead of a technician to determine whether each system is “OK” or “NG”.
DTC work support Select the operating condition to confirm Diagnostic Trouble Codes.
TCM part number TCM part number can be read.
Item name Condition Display value (Approx.)
VHCL/S SE-A/T
During drivingApproximately matches the speedometer
reading.
VHCL/S SE-MTR
THROTTLE POSIReleased accelerator pedal. 0.0/8
Fully depressed accelerator pedal. 8.0/8

AT-74
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
FLUID TEMP SE When A/T fluid temperature is 20°C (68°F). 1.5 V
When A/T fluid temperature is 80°C (176°F). 0.5 V
BATTERY VOLT When turning ignition switch to “ON”. Battery voltage
ENGINE SPEED Engine runningApproximately matches the tachometer
reading.
TURBINE REV During driving (lock-up ON) Approximately matches the engine speed.
OVERDRIVE SWWhen overdrive control switch is depressed. ON
When overdrive control switch is released. OFF
PN POSI SWWhen setting selector lever to “N” or “P” position. ON
When setting selector lever to other positions. OFF
R POSITION SWWhen setting selector lever to “R” position. ON
When setting selector lever to other positions. OFF
D POSITION SWWhen setting selector lever to “D” position. ON
When setting selector lever to other positions. OFF
2 POSITION SWWhen setting selector lever to “2” position. ON
When setting selector lever to other positions. OFF
1 POSITION SWWhen setting selector lever to “1” position. ON
When setting selector lever to other positions. OFF
CLOSED THL/SWReleased accelerator pedal. ON
Depressed accelerator pedal. OFF
W/O THRL/P-SWFully depressed accelerator pedal. ON
Released accelerator pedal. OFF
SHIFT S/V AWhen shift solenoid valve A operates.
(When driving in “D
1” or “D4”.)ON
When shift solenoid valve A does not operate.
(When driving in “D
2” or “D3”.)OFF
SHIFT S/V BWhen shift solenoid valve B operates.
(When driving in “D
1” or “D2”.)ON
When shift solenoid valve B does not operate.
(When driving in “D
3” or “D4”.)OFF
OVERRUN/C S/VWhen overrun clutch solenoid valve operates.
(When overrun clutch disengaged. Refer to AT-
19 .)ON
When overrun clutch solenoid valve does not
operate. (When overrun clutch engaged. Refer
to AT- 1 9
.)OFF
BRAKE SWDepressed brake pedal. ON
Released brake pedal. OFF
GEAR During driving 1, 2, 3, 4
SLCT LVR POSIWhen setting selector lever to “N” or “P” posi-
tions.N · P
When setting selector lever to “R” position. R
When setting selector lever to “D” position. D
When setting selector lever to “2” position. 2
When setting selector lever to “1” position. 1
VEHICLE SPEED During drivingApproximately matches the speedometer
reading. Item name Condition Display value (Approx.)

TROUBLE DIAGNOSIS
AT-75
< SERVICE INFORMATION >
D
E
F
G
H
I
J
K
L
MA
B
AT
N
O
P
SELF-DIAGNOSTIC RESULT MODE
After performing AT-78, "Diagnosis Procedure without CONSULT-III" , place check marks for results on the AT-
40, "How to Perform Trouble Diagnosis for Quick and Accurate Repair" . Reference pages are provided follow-
ing the items.
Display Items List
LINE PRES DTY Line pressure low ⇔ Line pressure high 0 % ⇔ 94 %
TCC S/V DUTY Lock-up OFF ⇔ Lock-up ON 4 % ⇔ 94 % Item name Condition Display value (Approx.)
Items (CONSULT-III
screen terms)Malfunction is detected when...OBD-II (DTC)
Reference
page MIL indicator
lamp*1, “EN-
GINE” with
CONSULT-III
or GST
CAN COMM CIRCUIT• When TCM is not transmitting or receiving CAN communication signal
for 2 seconds or more.U1000AT- 8 3
PNP SW/CIRC• TCM does not receive the correct voltage signal (based on the gear
position) from the switch.P0705AT- 8 6
ATF TEMP SEN/CIRC • TCM receives an excessively low or high voltage from the sensor. P0710AT- 9 1
VHCL SPEED SEN-A/T • TCM does not receive the proper voltage signal from the sensor. P0720AT- 9 6
ENGINE SPEED SIG • TCM does not receive the proper voltage signal from the ECM. P0725AT- 1 0 1
A/T 1ST GR FNCTN• A/T cannot be shifted to the 1st gear position even if electrical circuit
is good.P0731*2AT- 1 0 5
A/T 2ND GR FNCTN• A/T cannot be shifted to the 2nd gear position even if electrical circuit
is good.P0732*2AT- 1 0 8
A/T 3RD GR FNCTN• A/T cannot be shifted to the 3rd gear position even if electrical circuit
is good.P0733*2AT- 111
A/T 4TH GR FNCTN• A/T cannot be shifted to the 4th gear position even if electrical circuit
is good.P0734*2AT- 11 4
T/C CLUTCH SOL/V• TCM detects an improper voltage drop when it tries to operate the so-
lenoid valve.P0740AT- 11 9
A/T TCC S/V FNCTN • A/T cannot perform lock-up even if electrical circuit is good.
P0744*2AT- 1 2 4
LINE PRESSURE S/V• TCM detects an improper voltage drop when it tries to operate the so-
lenoid valve.P0745AT- 1 2 9
SHIFT SOLENOID/V A• TCM detects an improper voltage drop when it tries to operate the so-
lenoid valve.P0750AT- 1 3 4
SHIFT SOLENOID/V B• TCM detects an improper voltage drop when it tries to operate the so-
lenoid valve.P0755 AT- 1 3 9
OVERRUN CLUTCH S/
V• TCM detects an improper voltage drop when it tries to operate the so-
lenoid valve.P1760AT- 1 4 4
VHCL SPEED SEN-
MTR• TCM does not receive the proper voltage signal from the sensor. —AT- 1 4 9
BATT/FLUID TEMP
SEN• TCM receives an excessively low or high voltage from the sensor. —AT- 1 5 2
TURBINE SENSOR • TCM does not receive proper voltage signal from sensor. —AT- 1 5 8
CONTROL UNIT (RAM) • TCM memory (RAM) is malfunctioning. —AT- 1 6 3

AT-76
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
*1: Refer to AT- 3 8 , "Malfunction Indicator Lamp (MIL)" .
*2: These malfunctions cannot be displayed MIL if another malfunction is assigned to MIL.
DATA MONITOR MODE
Display Items List
X: Standard, —: Not applicable, : Option
CONTROL UNIT (ROM) • TCM memory (ROM) is malfunctioning. —AT- 1 6 3
No failure
(NO SELF DIAGNOS-
TIC FAILURE INDICAT-
ED FURTHER
TESTING MAY BE RE-
QUIRED)• No failure has been detected. — — Items (CONSULT-III
screen terms)Malfunction is detected when...OBD-II (DTC)
Reference
page MIL indicator
lamp*1, “EN-
GINE” with
CONSULT-III
or GST
Monitored item (Unit)Monitor Item Selection
Remarks
TCM INPUT
SIGNALSMAIN SIG-
NALSSELEC-
TION FROM
MENU
VHCL/S SE-A/T (km/h)X — Revolution sensor
VHCL/S SE-MTR (km/h) X —Vehicle speed display may not be accu-
rate under approx. 10 km/h (6 mph). It
may not indicate 0 km/h (0 mph) when
vehicle is stationary.
THRTL POS SEN (V) X —
FLUID TEMP SE (V) X —
BATTERY VOLT (V) X —
ENGINE SPEED (rpm) X X
TURBINE REV (rpm) X —
OVERDRIVE SW (ON/OFF) X —
PN POSI SW (ON/OFF) X —
R POSITION SW (ON/OFF) X —
D POSITION SW (ON/OFF) X —
2 POSITION SW (ON/OFF) X —
1 POSITION SW (ON/OFF) X —
ASCD-CRUISE (ON/OFF) X —
Signal input with CAN communication.
ASCD-OD CUT (ON/OFF) X —
KICKDOWN SW (ON/OFF) X —
Not mounted but displayed.
POWERSHIFT SW (ON/OFF) X —
CLOSED THL/SW (ON/OFF) X —
Signal input with CAN communication.
W/O THRL/P-SW (ON/OFF) X —

TROUBLE DIAGNOSIS
AT-77
< SERVICE INFORMATION >
D
E
F
G
H
I
J
K
L
MA
B
AT
N
O
P
CAN DIAGNOSTIC SUPPORT MONITOR MODE
Refer to LAN-12, "CAN Diagnostic Support Monitor".
DTC WORK SUPPORT MODE
Display Items List
*SHIFT S/V A (ON/OFF) — —
Displays status of check signal (reinput
signal) for TCM control signal output. Re-
mains unchanged when solenoid valves
are open or shorted. *SHIFT S/V B (ON/OFF) — —
*OVRRUN/C S/V (ON/OFF) — —
HOLD SW (ON/OFF) X — Not mounted but displayed.
BRAKE SW (ON/OFF) X —Stop lamp switch (Signal input with CAN
communication)
GEAR — XGear position recognized by the TCM up-
dated after gear-shifting
SLCT LVR POSI — XSelector lever position is recognized by
the TCM.
For fail-safe operation, the specific value
used for control is displayed.
VEHICLE SPEED (km/h) — X Vehicle speed recognized by the TCM.
THROTTLE POSI (0.0/8) — XDegree of opening for accelerator recog-
nized by the TCM
For fail-safe operation, the specific value
used for control is displayed.
LINE PRES DTY (%) — X
TCC S/V DUTY (%) — X
SHIFT S/V A (ON/OFF) — X
SHIFT S/V B (ON/OFF) — X
OVERRUN/C S/V (ON/OFF) — X
SELF-D DP LMP (ON/OFF) — X
TC SLIP RATIO (0.000) — —
TC SLIP SPEED (rpm) — —Difference between engine speed and
torque converter input shaft speed
Voltage (V) — —Displays the value measured by the volt-
age probe.
Frequency (Hz) — —
The value measured by the pulse probe
is displayed. DUTY-HI (high) (%) — —
DUTY-LOW (low) (%) — —
PLS WIDTH-HI (ms) — —
PLS WIDTH-LOW (ms) — —Monitored item (Unit)Monitor Item Selection
Remarks
TCM INPUT
SIGNALSMAIN SIG-
NALSSELEC-
TION FROM
MENU

AT-78
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
Diagnosis Procedure without CONSULT-III
INFOID:0000000001703194
TCM SELF-DIAGNOSTIC PROCEDURE
Description
If a malfunction occurs in electrical system, turning ignition switch ON will illuminate OD OFF indicator lamp for
2 seconds. To detect a malfunction, entering a self-diagnosis start signal retrieves information on malfunctions
from memory and indicates malfunction by blinking OD OFF indicator lamp.
Diagnostic Procedure
1.CHECK OD OFF INDICATOR LAMP
1. Park vehicle on flat surface.
2. Move selector lever to “P” position.
3. Turn ignition switch OFF. Wait at least 5 seconds.
DTC work support itemDescription Check item
1ST GR FNCTN P0731Following items for “A/T 1st gear function (P0731)” can be con-
firmed.
• Self-diagnosis status (whether the diagnosis is being performed
or not)
• Self-diagnostic results (OK or NG)• Shift solenoid valve A
• Shift solenoid valve B
• Each clutch
•Hydraulic control circuit
2ND GR FNCTN P0732Following items for “A/T 2nd gear function (P0732)” can be con-
firmed.
• Self-diagnosis status (whether the diagnosis is being performed
or not)
• Self-diagnostic results (OK or NG)• Shift solenoid valve B
• Each clutch
•Hydraulic control circuit
3RD GR FNCTN P0733Following items for “A/T 3rd gear function (P0733)” can be con-
firmed.
• Self-diagnosis status (whether the diagnosis is being performed
or not)
• Self-diagnostic results (OK or NG)• Shift solenoid valve A
• Each clutch
•Hydraulic control circuit
4TH GR FNCTN P0734Following items for “A/T 4th gear function (P0734)” can be con-
firmed.
• Self-diagnosis status (whether the diagnosis is being performed
or not)
• Self-diagnostic results (OK or NG)• Shift solenoid valve A
• Shift solenoid valve B
• Overrun clutch solenoid valve
• Line pressure solenoid valve
• Each clutch
•Hydraulic control circuit
TCC S/V FNCTN P0744Following items for “A/T TCC S/V function (lock-up) (P0744)” can
be confirmed.
• Self-diagnosis status (whether the diagnosis is being performed
or not)
• Self-diagnostic results (OK or NG)• Torque converter clutch sole-
noid valve
• Each clutch
•Hydraulic control circuit
SCIA5472E