NISSAN LATIO 2010 Service Repair Manual

AT-134
< SERVICE INFORMATION >
P0745 PRESSURE CONTROL SOLENOID A
Wiring Diagram - AT - LPSV
INFOID:0000000005397329
TCM TERMINALS AND REFERENCE VALUES
Refer to AT-75, "TCM Terminal and Reference Value".
BCWA0654E
Revision: January 20102010 Versa

P0745 PRESSURE CONTROL SOLENOID AAT-135
< SERVICE INFORMATION >
DE
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Diagnosis ProcedureINFOID:0000000005397330
1.CHECK INPUT SIGNALWith CONSULT-III
1. Turn ignition switch ON. (Do not start engine.)
2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
3. Read out the value of “LINE PRES DTY” while driv ing. Check the value changes according to driving
speed.
Without CONSULT-III
1. Turn ignition switch ON. (Do not start engine.)
2. Check voltage between TCM connector terminals and ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 2.
2.CHECK DROPPING RESISTOR
1. Turn ignition switch OFF.
2. Disconnect dropping resistor har ness connector in engine room.
3. Check resistance between terminals.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3.CHECK VALVE RESISTANCE
1. Turn ignition switch OFF.
2. Disconnect terminal cord assembly connector in engine room.
Item name Condition Display value
LINE PRES DTY Small throttle opening (Low line pressure)
⇔
Large throttle opening (High line pres-
sure) 0 % ⇔
94 %
Item Connec-
tor Terminal
Condition Judge-
ment stan- dard
(Approx.)
Line pres-
sure sole-
noid valve E31 1 - Ground When releasing accelera-
tor pedal after warming
up engine.
1.5 - 3.0 V
When depressing accel-
erator pedal fully after
warming up engine. 0 V
Line pres-
sure sole-
noid valve
(with drop-
ping resis-
tor) E31 2 - Ground When releasing accelera-
tor pedal after warming
up engine.
4 - 14 V
When depressing accel-
erator pedal fully after
warming up engine. 0 V
SCIA3267E
Item Connector Terminal Resistance (Approx.)
Dropping resistor E49 1 - 212 Ω
SCIA4950E
Revision: January 20102010 Versa

AT-136
< SERVICE INFORMATION >
P0745 PRESSURE CONTROL SOLENOID A
3. Check resistance between terminal cord assembly harness con-nector terminal and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4. CHECK HARNESS BETWEEN TCM AND TERM INAL CORD ASSEMBLY HARNESS CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect terminal cord assembly harness connector and TCM connector.
3. Check continuity between terminal cord assembly harness con- nector terminal and TCM connector terminal.
4. Check continuity between terminal cord assembly harness con- nector terminal and dropping resistor harness connector termi-
nal.
5. Check continuity between dr opping resistor harness connector
terminal and TCM connector terminal.
6. If OK, check harness for short to ground and short to power.
7. If OK, check continuity bet ween ground and transaxle assembly.
8. Reinstall any part removed.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
5.CHECK DTC
Perform AT-133, "
DTC Confirmation Procedure" .
OK or NG
OK >> INSPECTION END
Solenoid valve Connector Terminal Resistance (Approx.)
Line pressure solenoid
valve F30 4 - Ground 2.5 - 5.0 Ω
SCIA3457E
Item
Connector Terminal Continuity
TCM E311
Ye s
Terminal cord assembly
harness connector F30
4
SCIA3272E
Item Connector Terminal Continuity
Dropping resistor harness
connector E49
2
Ye s
Terminal cord assembly
harness connector F30
4
SCIA7194E
Item Connector Terminal Continuity
TCM E312
Ye s
Dropping resistor harness
connector E49
1
SCIA7195E
Revision: January 20102010 Versa

P0745 PRESSURE CONTROL SOLENOID AAT-137
< SERVICE INFORMATION >
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NG >> GO TO 6.
6.CHECK TCM
1. Check TCM input/output signal. Refer to AT-75, "
TCM Terminal and Reference Value" .
2. If NG, recheck TCM pin terminals for dam age or loose connection with harness connector.
OK or NG
OK >> INSPECTION END
NG >> Repair or replace damaged parts.
Component InspectionINFOID:0000000005397331
LINE PRESSURE SOLENOID VALVE
• For removal, refer to AT-222, "Control Valve Assembly and Accumulators" .
Resistance Check
• 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.
DROPPING RESISTOR
• Check resistance between terminals.
Solenoid valve Connector Terminal Resistance (Approx.)
Line pressure solenoid
valve F30 4 - Ground
2.5 - 5 Ω
SCIA3457E
SCIA3275E
Item Connector Terminal Resistance (Approx.)
Dropping resistor E49 1 - 212 Ω
SCIA4950E
Revision: January 20102010 Versa

AT-138
< SERVICE INFORMATION >
P0750 SHIFT SOLENOID A
P0750 SHIFT SOLENOID A
DescriptionINFOID:0000000005397332
Shift solenoid valves A and B are turned ON or OFF by the TCM in response to signals sent from the transmis-
sion range switch, vehicle speed and ECM (throttle opening) . Gears will then be shifted to the optimum posi-
tion.
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000005397333
On Board Diagn osis LogicINFOID:0000000005397334
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0750 SHIFT SOLENOID A” wi th CONSULT-III or 4th judgement flicker without
CONSULT-III is detected when TCM detects an improper voltage drop when it tries to operate the solenoid
valve.
Possible CauseINFOID:0000000005397335
• Harness or connector (The solenoid circuit is open or shorted.)
• Shift solenoid valve A
DTC Confirmation ProcedureINFOID:0000000005397336
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 proc edure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Turn ignition switch ON and select “DATA MONI TOR” mode for “TRANSMISSION” with CONSULT-III.
2. Touch “START”.
3. Start engine.
4. Drive vehicle in “D” position and allow the transaxle to shift 1 → 2 (“GEAR”).
5. If the check result is NG, go to AT-140, "
Diagnosis Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-III”.
WITHOUT CONSULT-III
1. Start engine.
2. Drive vehicle in D
1→ D2 position.
3. Perform self-diagnosis. Refer to AT-82, "
Diagnosis Procedure without CONSULT-III" .
4. If the check result is NG, go to AT-140, "
Diagnosis Procedure" .
Gea r p osit io n1234
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 A When 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
Revision: January 20102010 Versa

P0750 SHIFT SOLENOID AAT-139
< SERVICE INFORMATION >
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Wiring Diagram - AT - SSV/AINFOID:0000000005397337
TCM TERMINALS AND REFERENCE VALUES
Refer to AT-75, "TCM Terminal and Reference Value".
BCWA0655E
Revision: January 20102010 Versa

AT-140
< SERVICE INFORMATION >
P0750 SHIFT SOLENOID A
Diagnosis Procedure
INFOID:0000000005397338
1.CHECK INPUT SIGNAL
With CONSULT-III
1. Start engine.
2. Select “MAIN SIGNALS” in “DATA MONITO R” mode for “TRANSMISSION” with CONSULT-III.
3. Read out the value of “SHIFT S/V A” 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 A 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 TERM INAL 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 A When shift solenoid valve A operates.
(When driving in “D
1” or “D4”.)
ON
When shift solenoid valve A does not oper-
ate.
(When driving in “D
2” or “D3”.) OFF
Item
Connec-
tor Terminal
Condition Judge-
ment stan-
dard
(Approx.)
Shift sole-
noid valve A E31 11 - Ground When shift solenoid valve
A operates.
(When driving in “D
1” or
“D
4”.) Battery
voltage
When shift solenoid valve
A does not operate.
(When driving in “D
2” or
“D
3”.) 0 V
SCIA3248E
Solenoid Valve Connector Terminal Resistance (Approx.)
Shift solenoid valve A E31 11 - Ground 20 - 30 Ω
SCIA3249E
Revision: January 20102010 Versa

P0750 SHIFT SOLENOID AAT-141
< 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-138, "
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-75, "
TCM Terminal and Reference Value" .
2. If NG, recheck TCM pin terminals for dam age or loose connection with harness connector.
OK or NG
OK >> INSPECTION END
NG >> Repair or replace damaged parts.
Component InspectionINFOID:0000000005397339
SHIFT SOLENOID VALVE A
• For removal, refer to AT-222, "Control Valve Assembly and Accumulators" .
Resistance Check
Item Connector Terminal Continuity
TCM E3111
Ye s
Terminal cord assembly
harness connector F30
2
SCIA3250E
Solenoid valve Connector Terminal Resistance (Approx.)
Shift solenoid valve A F30 2 - Ground 20 - 30 Ω
SCIA3453E
Revision: January 20102010 Versa

AT-142
< SERVICE INFORMATION >
P0750 SHIFT SOLENOID A
• Check resistance between terminal and ground.
Operation Check
• Check solenoid valve by listening for its operating sound whileapplying battery voltage to the terminal and ground.
Solenoid valve Connector Terminal Resistance (Approx.)
Shift solenoid valve A F30 2 - Ground 20 - 30 Ω
SCIA2049E
SCIA2052E
Revision: January 20102010 Versa

P0755 SHIFT SOLENOID BAT-143
< SERVICE INFORMATION >
DE
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AT
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P0755 SHIFT SOLENOID B
DescriptionINFOID:0000000005397340
Shift solenoid valves A and B are turned ON or OFF by the TCM in response to signals sent from the transmis-
sion range switch, vehicle speed and ECM (throttle openi ng). Gears will then be shifted to the optimum posi-
tion.
CONSULT-III Reference Val ue in Data Monitor ModeINFOID:0000000005397341
On Board Diagnosis LogicINFOID:0000000005397342
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0755 SHIFT SOLENOID 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:0000000005397343
• Harness or connector
(The solenoid circuit is open or shorted.)
• Shift solenoid valve B
DTC Confirmation ProcedureINFOID:0000000005397344
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 MO NITOR” mode for “TRANSMISSION” 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-145, "
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-82, "
Diagnosis Procedure without CONSULT-III" .
4. If the check result is NG, go to AT-145, "
Diagnosis Procedure" .
Gear position 123 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 B When 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
Revision: January 20102010 Versa