2008 NISSAN LATIO service

PNP, OD SWITCH AND CLOSED THROTTLE, WIDE OPEN THROTTLE POSI-
TION SIGNAL CIRCUIT
AT-171
< SERVICE INFORMATION >
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11 .PERFORM SELF-DIAGNOSIS
Without CONSULT-III
Perform self-diagnosis. Refer to AT-78, "
Diagnosis Procedure without CONSULT-III".
OK or NG
OK >>INSPECTION END
NG − 1 >> Self-diagnosis does not activate: GO TO 12.
NG − 2 >> DTC is displayed: Check the malfunctioning system. Refer to AT-78, "
Diagnosis Procedure with-
out CONSULT-III".
12.CHECK TCM
1. Check TCM input/output signal. 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.
Component InspectionINFOID:0000000001703330
OVERDRIVE CONTROL SWITCH
• Check continuity between A/T device harness connector terminals.
PNP SWITCH
1. Check continuity between PNP switch harness connector termi-
nals.
2. If NG, check again with control cable (2) disconnected from
manual shaft (3) of A/T assembly. Refer to step 1.
(1): Lock nut
3. If OK on step 2, adjust control cable (2). Refer to AT-207,
"Adjustment of A/T Position".
4. If NG on step 2, remove PNP switch from A/T assembly and
check continuity of PNP switch terminals. Refer to step 1.
5. If OK on step 4, adjust PNP switch. Refer to AT-219, "
Park/Neu-
tral Position (PNP) Switch".
6. If NG on step 4, replace PNP switch. Refer to AT-219, "
Park/
Neutral Position (PNP) Switch".
Item Connector TerminalOverdrive control
switch conditionContinuity
A/T device harness con-
nector (Overdrive con-
trol switch)M38 1 - 2Released No
Depressed Yes
SCIA5330E
Selector lever position Connector Terminal Continuity
“P”
F251 - 2, 3 - 7
Ye s
*Continuity
should not
exist in posi-
tions other
than the
specified
positions. “R” 3 - 8
“N” 1 - 2, 3 - 9
“D” 3 - 6
“2” 3 - 5
“1” 3 - 4
SCIA5588E
SCIA6370J

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-173
< SERVICE INFORMATION >
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TROUBLE DIAGNOSIS FOR SYMPTOMS
Wiring Diagram - AT - NONDTCINFOID:0000000001703334
BCWA0662E

AT-174
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS FOR SYMPTOMS
BCWA0663E

TROUBLE DIAGNOSIS FOR SYMPTOMS
AT-175
< SERVICE INFORMATION >
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BCWA0664E

AT-176
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS FOR SYMPTOMS
TCM TERMINALS AND REFERENCE VALUES
Refer to AT-71, "TCM Terminal and Reference Value" .
OD OFF Indicator Lamp Does Not Come OnINFOID:0000000001703335
SYMPTOM:
BCWA0772E

TROUBLE DIAGNOSIS FOR SYMPTOMS
AT-177
< SERVICE INFORMATION >
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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