NISSAN LATIO 2009 Service Repair Manual

OK >> GO TO 5.
NG >> GO TO 2. OK >> GO TO 3.
NG >> Repair or replace damaged parts. 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

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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. OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors. 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

AT-138< SERVICE INFORMATION >
DTC P0745 LINE PRESS
URE SOLENOID VALVE
NG >> GO TO 6. 6.
CHECK TCM
1. Check TCM input/output signal. Refer to AT-77, " 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 Inspection INFOID:0000000004305410
LINE PRESSURE SOLENOID VALVE
• For removal, refer to AT-221, " 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 - 2 12 Ω SCIA4950E

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DTC P0750 SHIFT SOLENOID VALVE A
Description INFOID:0000000004305411
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). G ears will then be shifted to the optimum position.
CONSULT-III Reference Val ue in Data Monitor Mode INFOID:0000000004305412
On Board Diagnosis Logic INFOID:0000000004305413
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0750 SHIFT SOLENOID/V A” with 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 Cause INFOID:0000000004305414
• Harness or connector (The solenoid circuit is open or shorted.)
• Shift solenoid valve A
DTC Confirmation Procedure INFOID:0000000004305415
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 (“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→ D 2 position.
3. Perform self-diagnosis. Refer to AT-83, " 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 A When shift solenoid valve A operates.
(When driving in “D 1 ” or “D 4 ”.) ON
When shift solenoid valve A does not operate.
(When driving in “D 2 ” or “D 3 ”.) OFF

TCM Terminal and Reference Value " .

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Diagnosis Procedure
INFOID:0000000004305417OK >> GO TO 5.
NG >> GO TO 2. OK >> GO TO 5.
NG >> GO TO 3. 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

OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors. OK >> GO TO 5.
NG >> Repair or replace damaged parts. DTC Confirmation Procedure " .
OK or NG OK >>
INSPECTION END
NG >> GO TO 6. 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 Inspection INFOID:0000000004305418
SHIFT SOLENOID VALVE A
• For removal, refer to AT-221, " Control Valve Assembly and Accumulators " .
Resistance Check Item Connector Terminal Continuity
TCM E31 11 Yes
Terminal cord assembly
harness connector F30 2

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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 A F30 2 - Ground 20 - 30 Ω

Diagnosis Procedure " .
WITH GST
Follow the procedure “WITH CONSULT-III”.
WITHOUT CONSULT-III
1. Start engine.
2. Drive vehicle in D 1→ D 2→ D 3 position.
3. Perform self-diagnosis. Refer to AT-83, " Diagnosis Procedure without CONSULT-III " .
4. If the check result is NG, go to AT-146, " 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 B When shift solenoid valve B operates.
(When driving in “D 1 ” or “D 2 ”.) ON
When shift solenoid valve B does not operate.
(When driving in “D 3 ” or “D 4 ”.) OFF

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Wiring Diagram - AT - SSV/B
INFOID:0000000004305424
TCM TERMINALS AND REFERENCE VALUES Refer to AT-77, " TCM Terminal and Reference Value " .