2008 NISSAN TEANA Service Manual

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Page 4569 of 5121

NISSAN TEANA 2008 Service Manual TM-96
< COMPONENT DIAGNOSIS >[CVT: RE0F09B]
P1745 LINE PRESSURE CONTROL
P1745 LINE PRESSURE CONTROL
DescriptionINFOID:0000000003849037
The pressure control solenoid valve A (line pressure solenoid val

Page 4570 of 5121

NISSAN TEANA 2008 Service Manual P1777 STEP MOTOR
TM-97
< COMPONENT DIAGNOSIS >[CVT: RE0F09B]
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P1777 STEP MOTOR
DescriptionINFOID:0000000003849040
The step motor changes the step by turning 4 coils ON/O

Page 4571 of 5121

NISSAN TEANA 2008 Service Manual TM-98
< COMPONENT DIAGNOSIS >[CVT: RE0F09B]
P1777 STEP MOTOR
Is the inspection result normal?
YES >> GO TO 5.
NO >> GO TO 2.
2.CHECK HARNESS BETWEEN TCM AND CVT UNIT (STEP MOTOR) (PART 1)
1. Disconnec

Page 4572 of 5121

NISSAN TEANA 2008 Service Manual P1777 STEP MOTOR
TM-99
< COMPONENT DIAGNOSIS >[CVT: RE0F09B]
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2. Check resistance between CVT unit connector terminals and ground.
Is the inspection result normal?
YES >

Page 4573 of 5121

NISSAN TEANA 2008 Service Manual TM-100
< COMPONENT DIAGNOSIS >[CVT: RE0F09B]
P1778 STEP MOTOR - FUNCTION
P1778 STEP MOTOR - FUNCTION
DescriptionINFOID:0000000003849044
The step motor changes the step by turning 4 coils ON/OFF acco

TM-100
< COMPONENT DIAGNOSIS >[CVT: RE0F09B]
P1778 STEP MOTOR - FUNCTION
P1778 STEP MOTOR - FUNCTION
DescriptionINFOID:0000000003849044
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:0000000003849045
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-100, "
Diagnosis Procedure".
NOTE:
Immediately after performing any “DTC CONFIRMATION PROCEDURE”, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.
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 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-100, "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI-35, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000003849046
1.CHECK STEP MOTOR SYSTEM
Check step motor system. Refer to TM-97, "
Description".
Is the inspection result normal?
DTCItem
(CONSULT-III screen term)Malfunction is detected when... Possible cause
P1778 STEP MOTR/FNCThere is a big difference between the num-
ber of steps for the stepping motor and for
the actual gear ratio.Ste p m ot or
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 4574 of 5121

NISSAN TEANA 2008 Service Manual P1778 STEP MOTOR - FUNCTION
TM-101
< COMPONENT DIAGNOSIS >[CVT: RE0F09B]
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YES >> GO TO 2.
NO >> Repair or replace damaged parts.
2.CHECK INPUT SPEED SENSOR (PRIMARY SPEE

Page 4575 of 5121

NISSAN TEANA 2008 Service Manual TM-102
< COMPONENT DIAGNOSIS >[CVT: RE0F09B]
SHIFT POSITION INDICATOR CIRCUIT
SHIFT POSITION INDICATOR CIRCUIT
DescriptionINFOID:0000000003849047
TCM sends position indicator signals to combination

Page 4576 of 5121

NISSAN TEANA 2008 Service Manual SHIFT LOCK SYSTEM
TM-103
< COMPONENT DIAGNOSIS >[CVT: RE0F09B]
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SHIFT LOCK SYSTEM
DescriptionINFOID:0000000003862436
Wiring Diagram - CVT SHIFT LOCK SYSTEM -INFOID:00000

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