2008 NISSAN TEANA Service Manual

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Page 4737 of 5121

NISSAN TEANA 2008 Service Manual TM-264
< COMPONENT DIAGNOSIS >[CVT: RE0F10A]
P1778 STEP MOTOR - FUNCTION
P1778 STEP MOTOR - FUNCTION
DescriptionINFOID:0000000003806475
The step motor changes the step by turning 4 coils ON/OFF acco

TM-264
< COMPONENT DIAGNOSIS >[CVT: RE0F10A]
P1778 STEP MOTOR - FUNCTION
P1778 STEP MOTOR - FUNCTION
DescriptionINFOID:0000000003806475
The step motor changes the step by turning 4 coils ON/OFF according to the signal from TCM. As a result,
the flow of line pressure to primary pulley is changed and pulley ratio is controlled.
This diagnosis item is detected when the electrical system is OK, but the mechanical system is NG.
This diagnosis item is detected when the state of the changing of the speed mechanism in the unit does not
operate normally.
DTC LogicINFOID:0000000003806476
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
Before starting “DTC CONFIRMATION PROCEDURE”, confirm “Hi” or “Mid” or “Low” fixation by
“PRI SPEED” and “VEHICLE SPEED” on “Data Monitor”.
If hi-geared fixation occurred, go to TM-264, "
Diagnosis Procedure".
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.
Perform the following procedure to confirm the malfunction is eliminated after the repair.
1.CHECK DTC DETECTION
With CONSULT-III
1. Turn ignition switch ON.
2. Select “Data Monitor” mode for “TRANSMISSION”.
3. Make sure that output voltage of CVT fluid temperature sensor is within the range specified below.
4. Start engine and maintain the following conditions for at least 30 consecutive seconds.
With GST.
Follow the procedure “With CONSULT-III”.
Is
“P1778 STEP MOTR/FNC” detected?
YES >> Go to TM-264, "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI-35, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000003806477
1.CHECK STEP MOTOR SYSTEM
DTCItem
(CONSULT-III screen term)Malfunction is detected when... Possible cause
P1778 STEP MOTR/FNCThere is a big difference be-
tween the number of steps for
the stepping motor and for the
actual gear ratio.Step motor
ATF TEMP SEN : 1.0 – 2.0 V
If it is 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)
Start test from 0 km/h (0 MPH)
Constant acceleration : Keep 30 sec or more
VEHICLE SPEED : 10 km/h (6 MPH) or more
ACC PEDAL OPEN : More than 1.0/8
RANGE : “D” position
ENG SPEED : 450 rpm or more

Page 4738 of 5121

NISSAN TEANA 2008 Service Manual P1778 STEP MOTOR - FUNCTION
TM-265
< COMPONENT DIAGNOSIS >[CVT: RE0F10A]
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Check step motor system. Refer to TM-261, "Description".
Is the inspection result normal?
YES >

Page 4739 of 5121

NISSAN TEANA 2008 Service Manual TM-266
< COMPONENT DIAGNOSIS >[CVT: RE0F10A]
SHIFT POSITION INDICATOR CIRCUIT
SHIFT POSITION INDICATOR CIRCUIT
DescriptionINFOID:0000000003806478
TCM sends position indicator signals to combination me

Page 4740 of 5121

NISSAN TEANA 2008 Service Manual SHIFT LOCK SYSTEM
TM-267
< COMPONENT DIAGNOSIS >[CVT: RE0F10A]
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SHIFT LOCK SYSTEM
DescriptionINFOID:0000000003806481
Wiring Diagram - CVT SHIFT LOCK SYSTEM -INFOID:00000

Page 4741 of 5121

NISSAN TEANA 2008 Service Manual TM-268
< COMPONENT DIAGNOSIS >[CVT: RE0F10A]
SHIFT LOCK SYSTEM
JCDWM0253GB

Page 4742 of 5121

NISSAN TEANA 2008 Service Manual SHIFT LOCK SYSTEM
TM-269
< COMPONENT DIAGNOSIS >[CVT: RE0F10A]
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Component Function CheckINFOID:0000000003806483
1. CHECK CVT SHIFT LOCK OPERATION
1. Turn ignition switch

Page 4743 of 5121

NISSAN TEANA 2008 Service Manual TM-270
< COMPONENT DIAGNOSIS >[CVT: RE0F10A]
SHIFT LOCK SYSTEM
YES >> Go to TM-270, "Diagnosis Procedure".
NO >> GO TO 2.
2. CHECK CVT SHIFT LOCK OPERATION
Attempt to shift the selector lever to any o

TM-270
< COMPONENT DIAGNOSIS >[CVT: RE0F10A]
SHIFT LOCK SYSTEM
YES >> Go to TM-270, "Diagnosis Procedure".
NO >> GO TO 2.
2. CHECK CVT SHIFT LOCK OPERATION
Attempt to shift the selector lever to any other position with the brake pedal depressed.
Can the selector lever be shifted to any other position?
YES >> INSPECTION END
NO >> Go to TM-270, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003806484
1. CHECK POWER SOURCE
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch connector.
3. Turn ignition switch ON.
4. Check voltage between stop lamp switch vehicle side harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Harness for short or open between fuse block J/B connector terminal 4F and stop lamp switch
harness connector terminal 3
10 A fuse [No. 3, located in the J/B]
Ignition switch
2.CHECK STOP LAMP SWITCH
Check stop lamp switch. Refer to TM-271, "
Component Inspection (Stop Lamp Switch)".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace damaged parts.
3.CHECK HARNESS BETWEEN STOP LAMP SWITCH AND CONTROL DEVICE (PART 1)
1. Turn ignition switch OFF.
2. Disconnect control device connector.
3. Check continuity between stop lamp switch vehicle side harness connector terminal and control device
vehicle side harness connector terminal.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace damaged parts.
4.CHECK HARNESS BETWEEN STOP LAMP SWITCH AND CONTROL DEVICE (PART 2)
Check continuity between stop lamp switch vehicle side harness connector terminal and ground.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace damaged parts.
Stop lamp switch vehicle side harness connector
GroundVoltage (Approx.)
Connector Terminal
E115 3 Battery Voltage
Stop lamp vehicle side harness connector Control device vehicle side harness connector
Continuity
Connector Terminal Connector Terminal
E115 4 M57 6 Existed
Stop lamp vehicle side harness connector
GroundContinuity
Connector Terminal
E115 4 Not existed

Page 4744 of 5121

NISSAN TEANA 2008 Service Manual SHIFT LOCK SYSTEM
TM-271
< COMPONENT DIAGNOSIS >[CVT: RE0F10A]
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5.CHECK GROUND CIRCUIT
Check voltage between control device vehicle side harness connector terminal and g

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