transaxle NISSAN TIIDA 2007 Service Repair Manual

DTC P0845 TRANSMISSION FLUID PRESSURE SENSOR B CIRCUIT (PRI
PRESSURE SENSOR)
CVT-141
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5. CHECK DTC
Perform CVT-137, "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 6.
6. CHECK TCM
1. Check TCM input/output signals. Refer to CVT-54, "
TCM Input/Output Signal Reference Values" .
2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> Replace the transaxle assembly. Refer to CVT-207, "Removal and Installation" .
NG >> Repair or replace damaged parts.

CVT-144
DTC P0868 SECONDARY PRESSURE DOWN
Revision: June 20062007 Versa
6. CHECK DTC
Perform CVT-142, "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> Replace the transaxle assembly. Refer to CVT-207, "
Removal and Installation" .

DTC P1723 CVT SPEED SENSOR FUNCTION
CVT-155
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Diagnostic ProcedureUCS0062Z
1. CHECK STEP MOTOR FUNCTION
Perform the self-diagnosis check. Refer to CVT-60, "
SELF-DIAGNOSTIC RESULT MODE" .
Is a malfunction in the step motor function indicated in the results?
YES >> Repair or replace damaged parts. (Check the step motor function. Refer to CVT-168, "DTC P1778
STEP MOTOR - FUNCTION" .)
NO >> GO TO 2.
2. CHECK OUTPUT SPEED SENSOR (SECONDARY SPEED SENSOR SYSTEM) AND INPUT SPEED
SENSOR (PRIMARY SPEED SENSOR) SYSTEM
Check output speed sensor (secondary speed sensor) system and input speed sensor (primary speed sensor)
system. Refer to CVT-95, "
DTC P0720 VEHICLE SPEED SENSOR CVT (SECONDARY SPEED SENSOR)" ,
CVT-90, "
DTC P0715 INPUT SPEED SENSOR CIRCUIT (PRI SPEED SENSOR)" .
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3. CHECK ENGINE SPEED SIGNAL SYSTEM
Check engine speed signal system. Refer to CVT-101, "
DTC P0725 ENGINE SPEED SIGNAL" .
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts. Refer to EC-576, "
IGNITION SIGNAL" .
4. DETECT MALFUNCTIONING ITEM
Check the following:

Power supply and ground circuit for TCM. Refer to CVT-145, "DTC P1701 TRANSMISSION CONTROL
MODULE (POWER SUPPLY)" .

The TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
5. CHECK DTC
Perform CVT-154, "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> Replace TCM or transaxle assembly. Refer to CVT-9, "
Service After Replacing TCM and Tran-
saxle Assembly" , CVT-207, "Removal and Installation" .

DTC P1726 ELECTRIC THROTTLE CONTROL SYSTEM
CVT-157
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Diagnostic ProcedureUCS00634
1. CHECK DTC WITH ECM
With CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “SELF-DIAG RESULTS” mode for “ENGINE” with CON-
SULT-II. Refer to EC-116, "
SELF-DIAG RESULTS MODE" .
OK or NG
OK >> GO TO 2.
NG >> Check the DTC Detected Item. Refer to EC-116, "
SELF-
DIAG RESULTS MODE" .

If CAN communication line is detected, go to CVT-68,
"DTC U1000 CAN COMMUNICATION LINE" .
2. CHECK DTC
Perform CVT-156, "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 3.
3. DETECT MALFUNCTIONING ITEM
Check the following:

The TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> Replace TCM. Refer to CVT-9, "Service After Replacing TCM and Transaxle Assembly" .
NG >> Repair or replace damaged parts.
BCIA0030E

DTC P1740 LOCK-UP SELECT SOLENOID VALVE CIRCUIT
CVT-161
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2. CHECK LOCK-UP SELECT 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 VALVE RESISTANCE
1. Turn ignition switch OFF.
2. Disconnect CVT unit harness connector.
3. Check resistance between CVT unit harness connector terminal
and ground.
OK or NG
OK >> GO TO 4.
NG >> Replace the transaxle assembly. Refer to CVT-207,
"Removal and Installation" .
4. CHECK HARNESS BETWEEN TCM AND LOCK-UP SELECT SOLENOID VALVE
1. Turn ignition switch OFF.
2. Disconnect TCM connector.
3. Check continuity between TCM connector terminal and CVT unit
harness connector terminal.
4. If OK, check harness for short to ground and short to power.
5. 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 CVT-158, "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 6.
Solenoid valve Connector TerminalResistance
(Approx.)
Lock-up select solenoid
valveE31 4 - Ground 5 - 20 Ω
SCIA4692E
Solenoid valve Connector TerminalResistance
(Approx.)
Lock-up select solenoid valve F46 13 - Ground 5 - 20 Ω
SCIA4693E
Item Connector Terminal Continuity
TCM E31 4
Ye s
CVT unit harness connector F46 13
SCIA4694E

CVT-162
DTC P1740 LOCK-UP SELECT SOLENOID VALVE CIRCUIT
Revision: June 20062007 Versa
6. CHECK TCM
1. Check TCM input/output signals. Refer to CVT-54, "
TCM Input/Output Signal Reference Values" .
2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >>INSPECTION END
NG >> 1. Repair or replace damaged parts.
2. Replace TCM. Refer to CVT-9, "
Service After Replacing TCM and Transaxle Assembly" .
Component InspectionUCS0063C
LOCK-UP SELECT SOLENOID VALVE
1. Turn ignition switch OFF.
2. Disconnect CVT unit harness connector.
3. Check resistance between CVT unit harness connector terminal
and ground.
4. If NG, replace the transaxle assembly. Refer to CVT-207,
"Removal and Installation" .
Solenoid valve Connector TerminalResistance
(Approx.)
Lock-up select solenoid valve F46 13 - Ground 5 - 20 Ω
SCIA4693E

DTC P1745 LINE PRESSURE CONTROL
CVT-163
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DTC P1745 LINE PRESSURE CONTROLPFP:31036
DescriptionUCS0063D
The pressure control solenoid valve A (line pressure solenoid valve) regulates the oil pump discharge pres-
sure to suit the driving condition in response to a signal sent from the TCM.
On Board Diagnosis LogicUCS0063E

This is not an OBD-II self-diagnostic item.

Diagnostic trouble code “P1745 L/PRESS CONTROL” with CONSULT-II is detected when TCM detects
the unexpected line pressure.
Possible CauseUCS0063F
TCM
DTC Confirmation ProcedureUCS0063G
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to con-
firm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch ON and select “DATA MONITOR” mode for
“TRANSMISSION” with CONSULT-II.
2. Make sure that output voltage of CVT fluid temperature sensor
is within the range below.
ATF TEMP SEN: 1.0 - 2.0 V
If out of range, drive the vehicle to decrease the voltage
(warm up the fluid) or stop engine to increase the voltage
(cool down the fluid)
3. If DTC is detected, go to CVT-163, "
Diagnostic Procedure" .
Diagnostic ProcedureUCS0063H
1. CHECK DTC
1. Turn ignition switch ON. (Do not start engine.)
2. Select “SELF-DIAG RESULTS” mode for “TRANSMISSION” with CONSULT-II.
3. Erase self-diagnostic results. Refer to CVT-63, "
How to Erase Self-diagnostic Results" .
4. Turn ignition switch OFF, and wait for 10 seconds or more.
5. Start engine.
6. Confirm self-diagnostic results again. Refer to CVT-60, "
SELF-DIAGNOSTIC RESULT MODE" .
Is the
“P1745 L/PRESS CONTROL” displayed?
YES >> Replace TCM. Refer to CVT-9, "Service After Replacing TCM and Transaxle Assembly" .
NO >>INSPECTION END
BCIA0031E

DTC P1777 STEP MOTOR - CIRCUIT
CVT-167
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3. CHECK STEP MOTOR
Check step motor. Refer to CVT-167, "
Component Inspection" .
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4. CHECK DTC
Perform CVT-164, "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 5.
5. CHECK TCM
1. Check TCM input/output signals. Refer to CVT-54, "
TCM Input/Output Signal Reference Values" .
2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >>INSPECTION END
NG >> Repair or replace damaged parts.
Component InspectionUCS0063P
STEP MOTOR
1. Turn ignition switch OFF.
2. Disconnect CVT unit harness connector.
3. Check resistance between CVT unit harness connector termi-
nals and ground.
4. If NG, replace the transaxle assembly. Refer to CVT-207, "
Removal and Installation" .
Name Connector TerminalResistance
(Approx.)
Step motor F466 - 7
30 Ω
8 - 9
6 - Ground
15 Ω 7 - Ground
8 - Ground
9 - Ground
SCIA4696E

DTC P1778 STEP MOTOR - FUNCTION
CVT-169
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WITH GST
Follow the procedure “WITH CONSULT-II”.
Diagnostic ProcedureUCS0063V
1. CHECK STEP MOTOR
With CONSULT-II
It is monitoring whether “GEAR RATIO: 2.56 - 0.43” changes similarly to “STM STEP: −20 - 180” by DATA
MONITOR mode. Refer to CVT-64, "
DATA MONITOR MODE" .
Without CONSULT-II
Inspect the engine speed (rise and descend), vehicle speed, throttle position, and check shift change. Refer to
CVT-210, "
Vehicle Speed When Shifting Gears" .
OK or NG
OK >>INSPECTION END
NG >> Replace the transaxle assembly. Refer to CVT-207, "
Removal and Installation" .

CVT-182
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: June 20062007 Versa
In “P” Position, Vehicle Moves Forward or Backward When PushedUCS00647
SYMPTOM:
Vehicle moves when it is pushed forward or backward with selector lever in “P” position.
DIAGNOSTIC PROCEDURE
1. CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis check. Refer to CVT-60, "
SELF-DIAGNOSTIC RESULT MODE" .
Do the self-diagnostic results indicate PNP switch circuit?
YES >> Check PNP switch circuit. Refer to CVT-78, "DTC P0705 PARK/NEUTRAL POSITION SWITCH" .
NO >> GO TO 2.
2. CHECK CVT POSITION
Check CVT position. Refer to CVT-196, "
Checking of CVT Position"
OK or NG
OK >> GO TO 3.
NG >> Adjust CVT position. Refer to CVT-195, "
Adjustment of CVT Position" .
3. CHECK SYMPTOM
Check again. Refer to CVT-49, "
Check at Idle" .
OK or NG
OK >>INSPECTION END
NG >> Replace the transaxle assembly. Refer to CVT-207, "
Removal and Installation" .
In “N” Position, Vehicle MovesUCS00648
SYMPTOM:
Vehicle moves forward or backward when selecting “N” position.
DIAGNOSTIC PROCEDURE
1. CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis check. Refer to CVT-60, "
SELF-DIAGNOSTIC RESULT MODE" .
Do the self-diagnostic results indicate PNP switch circuit?
YES >> Check PNP switch circuit. Refer to CVT-78, "DTC P0705 PARK/NEUTRAL POSITION SWITCH" .
NO >> GO TO 2.
2. CHECK CVT POSITION
Check CVT position. Refer to CVT-196, "
Checking of CVT Position"
OK or NG
OK >> GO TO 3.
NG >> Adjust CVT position. Refer to CVT-195, "
Adjustment of CVT Position" .
3. CHECK CVT FLUID LEVEL
Check CVT fluid level. Refer to CVT-16, "
Checking CVT Fluid" .
OK or NG
OK >> GO TO 4.
NG >> Refill CVT fluid.
4. CHECK SYMPTOM
Check again. Refer to CVT-49, "
Check at Idle" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 5.