2008 NISSAN LATIO engine

AT-172
< SERVICE INFORMATION >
SHIFT POSITION INDICATOR CIRCUIT
SHIFT POSITION INDICATOR CIRCUIT
DescriptionINFOID:0000000001703331
TCM sends the switch signals to combination meter via CAN communication line. Then selector lever position
is indicated on the shift position indicator.
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000001703332
Diagnosis ProcedureINFOID:0000000001703333
1.CHECK INPUT SIGNALS
With CONSULT-III
1. Start engine.
2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-III and read out the value of
“SLCT LVR POSI”.
3. Check that the following three positions or indicators are same.
- Actual position of the selector lever
- “SLCT LVR POSI” on CONSULT-III screen
- Shift position indicator in the combination meter
OK or NG
OK >>INSPECTION END
NG >> Check the following.
SHIFT POSITION INDICATOR SYMPTOM CHART
Item name Condition Display value
SLCT LVR POSIWhen setting selector lever to “N” or “P” positions. 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
Items Presumed location of trouble
Actual position does not change.Park/neutral position (PNP) switch
• Refer to AT- 8 6
.
A/T main system (Fail-safe function actuated)
•Refer to AT- 7 3 , "
CONSULT-III Function (A/T)" and AT- 7 8 , "Diag-
nosis Procedure without CONSULT-III".
Shift position indicator in the combination meter does not indicate
any position.
Perform the self-diagnosis for A/T and the combination meter.
• Refer to AT- 7 3 , "
CONSULT-III Function (A/T)" and DI-4. Actual position changes, but the shift position indicator in the com-
bination meter does not change.
Actual position differs from the shift position indicator in the com-
bination meter.
Shift position indicator in the combination meter does not indicate
specific position only.Check the combination meter.
• Refer to DI-4
.

TROUBLE DIAGNOSIS FOR SYMPTOMS
AT-177
< SERVICE INFORMATION >
D
E
F
G
H
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MA
B
AT
N
O
P
OD OFF indicator lamp does not come on for about 2 seconds when turning ignition switch to ON.
DIAGNOSTIC PROCEDURE
1.CHECK CAN COMMUNICATION LINE
Perform self-diagnosis. Refer to AT-73, "
CONSULT-III Function (A/T)" .
Is a malfunction in CAN communication indicated in the results?
YES >> Check CAN communication line. Refer to AT- 8 3 .
NO >> GO TO 2.
2.CHECK TCM POWER SOURCE
1. Turn ignition switch ON. (Do not start engine.)
2. Check voltage between TCM connector terminals and ground.
Refer to AT-164, "
Wiring Diagram - AT - MAIN" .
3. Turn ignition switch OFF.
4. Check voltage between TCM connector terminals and ground.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3.DETECT MALFUNCTIONING ITEM
Check the following.
• Harness for short or open between ignition switch and TCM connector terminals 10, 19. Refer to AT-164,
"Wiring Diagram - AT - MAIN" .
• Harness for short or open between battery and TCM connector terminal 28. Refer to AT-164, "
Wiring Dia-
gram - AT - MAIN" .
• 10A fuse (No.13, located in the fuse block) and 10A fuse (No.49, located in the IPDM E/R). Refer to AT-164,
"Wiring Diagram - AT - MAIN" .
• Ignition switch. Refer to PG-3
.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4.CHECK TCM GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect TCM connector.
Item Connector Terminal Judgement standard (Approx.)
TCM connectorE3110 -
Ground
Battery voltage 19 -
Ground
E3228 -
Ground
SCIA2656E
Item Connector Terminal Judgement standard (Approx.)
TCM connectorE3110 -
Ground0V
19 -
Ground0V
E3228 -
GroundBattery voltage
SCIA2657E

AT-178
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS FOR SYMPTOMS
3. Check continuity between TCM connector terminals and ground.
Refer to AT-164, "
Wiring Diagram - AT - MAIN" .
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
5.DETECT MALFUNCTIONING ITEM
Check the following.
• Harness for short or open between ignition switch and combination meter
• Combination meter. Refer to DI-4
.
OK or NG
OK >> GO TO 6.
NG >> Repair or replace damaged parts.
6.CHECK SYMPTOM
Check again. Refer to AT-53, "
Check Before Engine Is Started" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 7.
7.CHECK TCM
1. Check TCM input/output. Refer to AT-71, "
TCM Terminal and Reference Value" .
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >>INSPECTION END
NG >> Repair or replace damaged parts.
Engine Cannot Be Started in "P" and "N" PositionINFOID:0000000001703336
SYMPTOM:
•Engine cannot be started with selector lever in “P” or “N” position.
•Engine can be started with selector lever in “D”, “2”, “1” or “R” position.
DIAGNOSTIC PROCEDURE
1.CHECK PNP SWITCH
Check continuity between PNP switch harness connector terminals.
Refer to AT-87, "
Wiring Diagram - AT - PNP/SW" .
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2.CHECK PNP SWITCH
Check PNP switch again with control cable disconnected from manual shaft of A/T assembly. Refer to test
group 1.
OK or NG
OK >> Adjust A/T position. Refer to AT-207, "Adjustment of A/T Position" .
Item Connector Terminal Continuity
TCM connector E32 25, 48 - Ground Yes
SCIA2671E
Selector lever position Connector terminal Continuity
“P”, “N”
F25 1 - 2Ye s
Other positions No
SCIA5606E

AT-192
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS FOR SYMPTOMS
OK >>INSPECTION END
NG >> GO TO 3.
3.CHECK TCM
1. Check TCM input/output signals. Refer to AT-71, "
TCM Terminal and Reference Value" .
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >>INSPECTION END
NG >> Repair or replace damaged parts.
Engine Speed Does Not Return to Idle (Light Braking D4→ D3)INFOID:0000000001703349
SYMPTOM:
Engine speed does not smoothly return to idle when A/T shifts from D4 to D3 on “Cruise Test — Part
1”.
DIAGNOSTIC PROCEDURE
1.CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis. Refer to AT-73, "
CONSULT-III Function (A/T)" or AT-78, "Diagnosis Procedure without
CONSULT-III" .
Is any malfunction detected by self-diagnostic results?
YES >> Check the malfunctioning system. Refer to AT-73, "CONSULT-III Function (A/T)" or AT-78, "Diag-
nosis Procedure without CONSULT-III" .
NO >> GO TO 2.
2.CHECK ACCELERATOR PEDAL POSITION SENSOR
Check accelerator pedal position sensor. Refer to EC-493
.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace accelerator pedal position sensor.
3.CHECK A/T FLUID CONDITION
1. Remove oil pan. Refer to AT-230, "
Component" .
2. Check A/T fluid condition. Refer to AT-48, "
Inspections Before Trouble Diagnosis" .
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4.DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly. Refer to AT-216, "
Control Valve Assembly and Accumulators" .
2. Check the following items:
- Overrun clutch control valve
- Overrun clutch reducing valve
- Overrun clutch solenoid valve
3. Disassemble A/T. Refer to AT-240, "
Disassembly" .
4. Check the following items:
- Overrun clutch assembly. Refer to AT-288, "
Forward and Overrun Clutches" .
OK or NG
OK >> GO TO 6.
NG >> Repair or replace damaged parts.
5.DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly. Refer to AT-216, "
Control Valve Assembly and Accumulators" .
2. Check the following items:
- Overrun clutch control valve
- Overrun clutch reducing valve
- Overrun clutch solenoid valve
OK or NG

TROUBLE DIAGNOSIS FOR SYMPTOMS
AT-193
< SERVICE INFORMATION >
D
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MA
B
AT
N
O
P
OK >> GO TO 6.
NG >> Repair or replace damaged parts.
6.CHECK SYMPTOM
Check again. Refer to AT-55, "
Cruise Test - Part 1" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 7.
7.CHECK TCM
1. Check TCM input/output signals. Refer to AT-71, "
TCM Terminal and Reference Value" .
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >>INSPECTION END
NG >> Repair or replace damaged parts.
A/T Does Not Shift: D4→ D3, When OD OFFINFOID:0000000001703350
SYMPTOM:
A/T does not shift from D4 to D3 when OD OFF (OD OFF indicator lamp is on) on “Cruise Test — Part
3”.
DIAGNOSTIC PROCEDURE
1.CHECK CAN COMMUNICATION LINE
Perform self-diagnosis. Refer to AT-73, "
CONSULT-III Function (A/T)" or AT-78, "Diagnosis Procedure without
CONSULT-III" .
Is a malfunction in CAN communication indicated in the results?
YES >> Check CAN communication line. Refer to AT- 8 3 .
NO >> GO TO 2.
2.CHECK OVERDRIVE CONTROL SWITCH CIRCUIT
With CONSULT-III
1. Turn ignition switch ON. (Do not start engine)
2. Select “TCM INPUT SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-III.
3. Read out “OVERDRIVE SW”.
Check the signal of the overdrive control switch is indicated properly.
Without CONSULT-III
1. Turn ignition switch ON. (Do not start engine)
2. Check voltage between A/T device harness connector terminal
and ground. Refer toAT-173, "
Wiring Diagram - AT - NONDTC" .
Item nameOverdrive control switch
ConditionDisplay value
OVERDRIVE SWDepressed ON
Released OFF
Item Connector TerminalOverdrive
control switch
ConditionJudge-
ment
standard
(Approx.)
A/T device harness
connector (Overdrive
control switch)M38 1 - GroundReleasedBattery
voltage
Depressed 0V
SCIA5336E

AT-194
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS FOR SYMPTOMS
OK or NG
OK >> Go to AT-186, "A/T Does Not Shift: D2→ D3" .
NG >> Check overdrive control switch. Refer to AT-171, "
Component Inspection" .
A/T Does Not Shift: D3→ 22, When Selector Lever "D" → "2" PositionINFOID:0000000001703351
SYMPTOM:
A/T does not shift from D3 to 22 when changing selector lever from “D” to “2” position on “Cruise
Test — Part 3”.
DIAGNOSTIC PROCEDURE
1.CHECK SYMPTOM
Check symptom. Refer to AT-55, "
Cruise Test - Part 1" or AT-58, "Cruise Test - Part 2" .
Is
“A/T Does Not Shift: D1 → D2 or Does Not Kickdown: D4→ D2” OK?
YES (With CONSULT-III) >>GO TO 2.
YES (Without CONSULT-III) >>GO TO 3.
NO >> Go to AT-185, "
A/T Does Not Shift: D1→ D2or Does Not Kickdown: D4→ D2" .
2.CHECK PNP SWITCH CIRCUIT
With CONSULT-III
1. Turn ignition switch ON. (Do not start engine.)
2. Select “TCM INPUT SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-III.
3. Read out “P·N”, “R”, “D”, “2” and “1” position switches moving selector lever to each position.
OK or NG
OK >>INSPECTION END
NG >> Check PNP switch. Refer to AT-171, "
Component Inspection" .
3.CHECK PNP SWITCH CIRCUIT
Without CONSULT-III
1. Turn ignition switch ON. (Do not start engine.)
Monitor item Condition Display value
PN POSI SWWhen setting selector lever to “N” or “P” posi-
tion.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” positions. 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

TROUBLE DIAGNOSIS FOR SYMPTOMS
AT-195
< SERVICE INFORMATION >
D
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F
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H
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AT
N
O
P
2. Check voltage between TCM connector terminals and ground
while moving selector lever through each position. Refer to AT-
87, "Wiring Diagram - AT - PNP/SW" .
B: Battery voltage
0: 0V
OK or NG
OK >>INSPECTION END
NG >> Check PNP switch. Refer to AT-171, "
Component Inspection" .
A/T Does Not Shift: 22→ 11, When Selector Lever "2" → "1" PositionINFOID:0000000001703352
SYMPTOM:
A/T does not shift from 22 to 11 when changing selector lever from “2” to “1” position on “Cruise Test
— Part 3”.
DIAGNOSTIC PROCEDURE
1.CHECK PNP SWITCH CIRCUIT
With CONSULT-III
1. Turn ignition switch ON. (Do not start engine.)
2. Select “TCM INPUT SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-III.
3. Read out “P·N”, “R”, “D”, “2” and “1” position switches moving selector lever to each position.
OK or NG
Selector lever positionTe r m i n a l
36 35 34 27 26
“P”, “N” B 0 0 0 0
“R” 0B000
“D” 0 0 B 0 0
“2” 0 0 0 B 0
“1” 0 0 0 0 B
SCIA7162E
Monitor item Condition Display value
PN POSI SWWhen setting selector lever to “N” or “P” posi-
tion.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” positions. 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

AT-196
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS FOR SYMPTOMS
OK >> GO TO 3
NG >> Check PNP switch. Refer to AT-171, "
Component Inspection" .
2.CHECK PNP SWITCH CIRCUIT
Without CONSULT-III
1. Turn ignition switch ON. (Do not start engine.)
2. Check voltage between TCM connector terminals and ground
while moving selector lever through each position. Refer to AT-
87, "Wiring Diagram - AT - PNP/SW" .
B: Battery voltage
0: 0V
OK or NG
OK >> GO TO 3
NG >> Check PNP switch. Refer to AT-171, "
Component Inspection" .
3.CHECK A/T POSITION
Check A/T position. Refer to AT-207, "
Checking of A/T Position" .
OK or NG
OK >> GO TO 4.
NG >> Adjust A/T position. Refer to AT-207, "
Adjustment of A/T Position" .
4.CHECK VEHICLE SPEED SENSOR·A/T AND VEHICLE SPEED SENSOR·MTR CIRCUIT
Check vehicle speed sensor·A/T (revolution sensor) and vehicle speed sensor·MTR circuit. Refer to AT- 9 6
and/or AT-149 .
OK or NG
OK >> GO TO 5.
NG >> Repair or replace vehicle speed sensor·A/T (revolution sensor) and/or vehicle speed sensor·MTR
circuits.
5.CHECK A/T FLUID CONDITION
1. Remove oil pan. Refer to AT-230, "
Component" .
2. Check A/T fluid condition. Refer to AT-48, "
Inspections Before Trouble Diagnosis" .
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.
6.DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly. Refer to AT-216, "
Control Valve Assembly and Accumulators" .
2. Check the following items:
Selector lever positionTe r m i n a l
36 35 34 27 26
“P”, “N” B0000
“R” 0B000
“D” 0 0 B 0 0
“2” 000B0
“1” 0000B
SCIA7162E