NISSAN LATIO 2008 Service Repair Manual

DTC P0755 SHIFT SOLENOID VALVE B
AT-139
< SERVICE INFORMATION >
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DTC P0755 SHIFT SOLENOID VALVE B
DescriptionINFOID:0000000001703282
Shift solenoid valves A and B are turned ON or OFF by the TCM in response to signals sent from the PNP
switch, vehicle speed and ECM (throttle opening). Gears will then be shifted to the optimum position.
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000001703283
On Board Diagnosis LogicINFOID:0000000001703284
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0755 SHIFT SOLENOID/V B” with CONSULT-III or 5th judgement flicker without
CONSULT-III is detected when TCM detects an improper voltage drop when it tries to operate the solenoid
valve.
Possible CauseINFOID:0000000001703285
• Harness or connector
(The solenoid circuit is open or shorted.)
• Shift solenoid valve B
DTC Confirmation ProcedureINFOID:0000000001703286
CAUTION:
• Always drive vehicle at a safe speed.
• If performing this “DTC Confirmation Procedure” again, always turn ignition switch OFF and wait at
least 10 seconds before continuing.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Turn ignition switch ON and select “DATA MONITOR” mode for “A/T” with CONSULT-III.
2. Touch “START”.
3. Start engine.
4. Drive vehicle in D position and allow the transaxle to shift 1 → 2 → 3 (“GEAR”).
5. If the check result is NG, go to AT-141, "
Diagnosis Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-III”.
WITHOUT CONSULT-III
1. Start engine.
2. Drive vehicle in D
1→ D2→ D3 position.
3. Perform self-diagnosis. Refer to AT-78, "
Diagnosis Procedure without CONSULT-III" .
4. If the check result is NG, go to AT-141, "
Diagnosis Procedure" .
Gear position 1 2 3 4
Shift solenoid valve A ON (Closed) OFF (Open) OFF (Open) ON (Closed)
Shift solenoid valve B ON (Closed) ON (Closed) OFF (Open) OFF (Open)
Item name Condition Display value
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

AT-140
< SERVICE INFORMATION >
DTC P0755 SHIFT SOLENOID VALVE B
Wiring Diagram - AT - SSV/B
INFOID:0000000001703287
TCM TERMINALS AND REFERENCE VALUES
Refer to AT-71, "TCM Terminal and Reference Value".
BCWA0656E

DTC P0755 SHIFT SOLENOID VALVE B
AT-141
< SERVICE INFORMATION >
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Diagnosis ProcedureINFOID:0000000001703288
1.CHECK INPUT SIGNAL
With CONSULT-III
1. Start engine.
2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-III.
3. Read out the value of “SHIFT S/V B” while driving.
Check the value changes according to driving speed.
Without CONSULT-III
1. Start engine.
2. Check voltage between TCM connector terminal and ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 2.
2.CHECK SHIFT SOLENOID VALVE B CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect TCM connector.
3. Check resistance between TCM connector terminal and ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 3.
3. CHECK HARNESS BETWEEN TCM AND TERMINAL CORD ASSEMBLY HARNESS CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect terminal cord assembly harness connector and TCM connector.
Item name Condition Display value
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
ItemConnec-
torTerminal ConditionJudge-
ment stan-
dard
(Approx.)
Shift sole-
noid valve BE3112 -
GroundWhen shift solenoid valve
B operates.
(When driving in “D
1” or
“D
2”.)Battery
voltage
When shift solenoid valve
B does not operate.
(When driving in “D
3” or
“D
4”.)0 V
SCIA3253E
Solenoid Valve Connector Terminal Resistance (Approx.)
Shift solenoid valve B E31 12 - Ground 5 - 20 Ω
SCIA3254E

AT-142
< SERVICE INFORMATION >
DTC P0755 SHIFT SOLENOID VALVE B
3. Check continuity between terminal cord assembly harness con-
nector terminal and TCM connector terminal.
4. If OK, check harness for short to ground and short to power.
5. If OK, check continuity between ground and transaxle assembly.
6. Reinstall any part removed.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK VALVE RESISTANCE
1. Turn ignition switch OFF.
2. Disconnect terminal cord assembly connector in engine room.
3. Check resistance between terminal cord assembly harness con-
nector terminal and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
5.CHECK DTC
Perform AT-139, "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 6.
6.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:0000000001703289
SHIFT SOLENOID VALVE B
• For removal, refer to AT-216, "Control Valve Assembly and Accumulators" .
Resistance Check
Item Connector Terminal Continuity
TCM E31 12
Ye s
Terminal cord assembly
harness connectorF30 1
SCIA3255E
Solenoid valve Connector Terminal Resistance (Approx.)
Shift solenoid valve B F30 1 - Ground 5 - 20 Ω
SCIA3454E

DTC P0755 SHIFT SOLENOID VALVE B
AT-143
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• Check resistance between terminal and ground.
Operation Check
• Check solenoid valve by listening for its operating sound while
applying battery voltage to the terminal and ground.
Solenoid valve Connector Terminal Resistance (Approx.)
Shift solenoid valve B F30 1 - Ground 5 - 20 Ω
SCIA2055E
SCIA2058E

AT-144
< SERVICE INFORMATION >
DTC P1760 OVERRUN CLUTCH SOLENOID VALVE
DTC P1760 OVERRUN CLUTCH SOLENOID VALVE
DescriptionINFOID:0000000001703290
The overrun clutch solenoid valve is activated by the TCM in response to signals sent from the PNP switch,
overdrive control switch, vehicle speed and ECM (throttle opening). The overrun clutch operation will then be
controlled.
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000001703291
On Board Diagnosis LogicINFOID:0000000001703292
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P1760 OVERRUN CLUTCH S/V” with CONSULT-III or 6th judgement flicker with-
out CONSULT-III is detected when TCM detects an improper voltage drop when it tries to operate solenoid
valve.
Possible CauseINFOID:0000000001703293
• Harness or connector
(The solenoid circuit is open or shorted.)
• Overrun clutch solenoid valve
DTC Confirmation ProcedureINFOID:0000000001703294
CAUTION:
• Always drive vehicle at a safe speed.
• If performing this “DTC Confirmation Procedure” again, always turn ignition switch OFF and wait at
least 10 seconds before continuing.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Turn ignition switch ON and select “DATA MONITOR” mode for “A/T” with CONSULT-III.
2. Touch “START”.
3. Start engine.
4. Accelerate vehicle to a speed of more than 10 km/h (6 MPH) with “D” position (OD ON).
5. Release accelerator pedal completely with “D” position (OD OFF).
6. If the check result is NG, go to AT-146, "
Diagnosis Procedure".
WITH GST
Follow the procedure “WITH CONSULT-III”.
WITHOUT CONSULT-III
1. Start engine.
2. Drive vehicle under the following conditions:
Selector lever position: “D” position (OD ON)
Vehicle speed: Higher than 10 km/h (6 MPH)
3. Perform self-diagnosis. Refer to AT-78, "
Diagnosis Procedure without CONSULT-III" .
4. If the check result is NG, go to AT-146, "
Diagnosis Procedure" .
Item name Condition Display value
OVERRUN/C S/VWhen overrun clutch solenoid valve operates. (When
overrun clutch disengaged. Refer to AT- 1 9
.)ON
When overrun clutch solenoid valve does not operate.
(When overrun clutch engaged. Refer to AT- 1 9
.)OFF

DTC P1760 OVERRUN CLUTCH SOLENOID VALVE
AT-145
< SERVICE INFORMATION >
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Wiring Diagram - AT - OVRCSVINFOID:0000000001703295
TCM TERMINALS AND REFERENCE VALUES
Refer to AT-71, "TCM Terminal and Reference Value".
BCWA0657E

AT-146
< SERVICE INFORMATION >
DTC P1760 OVERRUN CLUTCH SOLENOID VALVE
Diagnosis Procedure
INFOID:0000000001703296
1.CHECK INPUT SIGNAL
With CONSULT-III
1. Start engine.
2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-III.
3. Read out the value of “OVERRUN/C S/V” while driving.
Check the value changes according to driving speed.
Without CONSULT-III
1. Start engine.
2. Check voltage between TCM connector terminal and ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 2.
2.CHECK OVERRUN CLUTCH SOLENOID VALVE CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect TCM connector.
3. Check resistance between TCM connector terminal and ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 3.
3. CHECK HARNESS BETWEEN TCM AND TERMINAL CORD ASSEMBLY HARNESS CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect terminal cord assembly harness connector and TCM connector.
Item name Condition Display value
OVERRUN/C S/VWhen overrun clutch solenoid valve oper-
ates. (When overrun clutch disengaged.
Refer to AT- 1 9
.)ON
When overrun clutch solenoid valve does
not operate. (When overrun clutch en-
gaged. Refer to AT- 1 9
.)OFF
Item Connec-
torTerminal ConditionJudge-
ment stan-
dard
(Approx.)
Overrun
clutch sole-
noid valve E31 20 -
GroundWhen overrun clutch so-
lenoid valve operates.
(When overrun clutch dis-
engaged. Refer to AT- 1 9

.)Battery
voltage
When overrun clutch so-
lenoid valve dose not op-
erate. (When overrun
clutch engaged. Refer to
AT- 1 9
.)0 V
SCIA3258E
Solenoid Valve Connector Terminal Resistance (Approx.)
Overrun clutch solenoid
valve E31 20 - Ground 20 - 30 Ω
SCIA3259E

DTC P1760 OVERRUN CLUTCH SOLENOID VALVE
AT-147
< SERVICE INFORMATION >
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3. Check continuity between terminal cord assembly harness con-
nector terminal and TCM connector terminal.
4. If OK, check harness for short to ground and short to power.
5. If OK, check continuity between ground and transaxle assembly.
6. Reinstall any part removed.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK VALVE RESISTANCE
1. Turn ignition switch OFF.
2. Disconnect terminal cord assembly connector in engine room.
3. Check resistance between terminal cord assembly harness con-
nector terminal and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
5.CHECK DTC
Perform AT-144, "
DTC Confirmation Procedure".
OK or NG
OK >>INSPECTION END
NG >> GO TO 6.
6.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:0000000001703297
OVERRUN CLUTCH SOLENOID VALVE
• For removal, refer to AT-216, "Control Valve Assembly and Accumulators".
Resistance Check
Item Connector Terminal Continuity
TCM E31 20
Ye s
Terminal cord assembly
harness connectorF30 3
SCIA3260E
Solenoid valve Connector Terminal Resistance (Approx.)
Overrun clutch solenoid
valveF30 3 - Ground 20 - 30 Ω
SCIA3455E

AT-148
< SERVICE INFORMATION >
DTC P1760 OVERRUN CLUTCH SOLENOID VALVE
• Check resistance between terminal and ground.
Operation Check
• Check solenoid valve by listening for its operating sound while
applying battery voltage to the terminal and ground.
Solenoid valve Connector Terminal Resistance (Approx.)
Overrun clutch solenoid
valveF30 3 - Ground 20 - 30 Ω
SCIA2059E
SCIA2062E