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Nissan Almera Tino V10 (2001 year). Manual - part 12

Description

NLAT0269

The line pressure sensor detects line pressure of CVT, and
sends TCM the signal.

CONSULT-II REFERENCE VALUE IN DATA MONITOR
MODE

NLAT0269S01

Remarks: Specification data are reference values.

Monitor item

Condition

Specification

Line pressure sensor

Throttle valve fully closed (PL Duty: 4%)

↓

Throttle valve fully depressed

(PL Duty: 94%)

Approx. 1.0V

↓

Approx. 4.0V

TCM TERMINALS AND REFERENCE VALUE

NLAT0269S02

Remarks: Specification data are reference values.

Terminal

No.

Wire color

Item

Condition

Judgement stan-

dard (Approx.)

Line pressure
sensor

When engine runs at idle speed.

1.0V

When engine runs at stall speed.

4.0V

—

R/L

—

4.5 - 5.5V

ON BOARD DIAGNOSIS LOGIC

NLAT0269S03

Diagnostic trouble code

Malfunction is detected when ...

Check items (Possible cause)

: LINE PRESSURE SEN

TCM receives an excessively low or high
voltage from the sensor.

Harness or connectors
(The sensor circuit is open or shorted.)

Line pressure sensor

: 5th judgement flicker

LINE PRESSURE SENSOR

EXCEPT FOR EURO-OBD

Description

AT-151

SAT250K

SAT812HA

SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE

NLAT0269S05

After the repair, perform the following procedure to confirm the
malfunction is eliminated.

With CONSULT-II

NLAT0269S0501

Start engine.

Select “SELF-DIAG RESULTS” mode for CVT with CONSULT-
II.

Drive vehicle in D position.

Without CONSULT-II

NLAT0269S0502

Start engine.

Drive vehicle in D position.

Perform self-diagnosis.
Refer

“SELF-DIAGNOSTIC

PROCEDURE

(Without

CONSULT-II)”, AT-35.

LINE PRESSURE SENSOR

EXCEPT FOR EURO-OBD

Description (Cont’d)

AT-152

Wiring Diagram — AT — LPS

NLAT0270

MODELS WITH ECM IN ENGINE COMPARTMENT

NLAT0270S01

YAT183

LINE PRESSURE SENSOR

EXCEPT FOR EURO-OBD

Wiring Diagram — AT — LPS

AT-153

MODELS WITH ECM IN CABIN

NLAT0270S02

YAT218

LINE PRESSURE SENSOR

EXCEPT FOR EURO-OBD

Wiring Diagram — AT — LPS (Cont’d)

AT-154

Diagnostic Procedure

NLAT0271

CHECK PRESSURE SENSOR

Refer to “Component Inspection”, AT-156.

OK or NG

OK (With CONSULT-II)

GO TO 2.

OK (Without CONSULT-
II)

GO TO 3.

Repair or replace pressure sensor.

CHECK INPUT SIGNAL (With CONSULT-II)

With CONSULT-II

1. Start engine.
2. Select “TCM Input Item Parameter List” in “DATA MONITOR” mode for “CVT” with CONSULT-II.
3. Read out the value of “LINE PRES DTY” while driving.

Throttle valve fully closed (PL Duty: 4%): Approx. 1.0V

Throttle valve fully depressed (PL Duty: 94%): Approx. 4.0V

OK or NG

GO TO 4.

Check the following items:

Harness for short or open between TCM, ECM and CVT fluid pressure sensor (Main
harness)

Ground circuit for ECM
Refer to EC section (“TROUBLE DIAGNOSIS FOR POWER SUPPLY”).

CHECK INPUT SIGNAL (Without CONSULT-II)

Without CONSULT-II

Refer to “Component Inspection”, AT-156.

OK or NG

GO TO 4.

Check the following items:

Harness for short or open between TCM, ECM and CVT fluid pressure sensor (Main
harness).

Ground circuit for ECM
Refer to EC section (“TROUBLE DIAGNOSIS FOR POWER SUPPLY”).

CHECK DTC

Perform “SELF-DIAGNOSIS CONFIRMATION PROCEDURE”, AT-152.

OK or NG

INSPECTION END

1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness con-

nector.

LINE PRESSURE SENSOR

EXCEPT FOR EURO-OBD

Diagnostic Procedure

AT-155

SAT265K

Component Inspection

=NLAT0272

LINE PRESSURE SENSOR

NLAT0272S01

Start engine.

Check voltage between terminals 1 and 6, 10 and 6.

Terminal No.

Voltage

Approx. 0.5 - 4.5V

Approx. 4.5 - 5.5V

LINE PRESSURE SENSOR

EXCEPT FOR EURO-OBD

Component Inspection

AT-156

Description

NLAT0273

The line pressure solenoid valve regulates the oil pump discharge
pressure to suit the driving condition in response to a signal sent
from the TCM.
The line pressure duty cycle value is not consistent when the
closed throttle position switch is “ON”. To confirm the line
pressure duty cycle at low pressure, the accelerator (throttle)
should be open until the closed throttle position switch is
“OFF”.

CONSULT-II REFERENCE VALUE IN DATA MONITOR
MODE

NLAT0273S01

Remarks: Specification data are reference values.

Monitor item

Condition

Specification

Line pressure solenoid valve duty

Small throttle opening

(Low line pressure)

↓

Large throttle opening

(High line pressure)

Approximately 4%

↓

Approximately 94%

NOTE:
The line pressure duty cycle value is not consistent when the closed throttle position switch is “ON”. To confirm the line pressure duty
cycle at low pressure, the accelerator (throttle) should be open until the closed throttle position switch is “OFF”.

TCM TERMINALS AND REFERENCE VALUE

NLAT0273S02

Remarks: Specification data are reference values.

Terminal

No.

Wire color

Item

Condition

Judgement stan-

dard (Approx.)

R/W

Line pressure
solenoid valve

When releasing accelerator pedal
after warming up engine.

2.8V

When depressing accelerator pedal
fully after warming up engine.

1.4V

P/B

Line pressure
solenoid valve
(with dropping
resistor)

When releasing accelerator pedal
after warming up engine.

11.0V

When depressing accelerator pedal
fully after warming up engine.

4.0V

ON BOARD DIAGNOSIS LOGIC

NLAT0273S03

Diagnostic trouble code

Malfunction is detected when ...

Check items (Possible cause)

: LINE PRESSURE S/V

TCM detects an improper voltage drop
when it tries to operate the solenoid
valve.

Harness or connectors
(The solenoid circuit is open or shorted.)

Line pressure solenoid valve

: 6th judgement flicker

LINE PRESSURE

SOLENOID VALVE

EXCEPT FOR EURO-OBD

Description

AT-157

SAT250K

SAT815HA

SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE

NLAT0273S04

After the repair, perform the following procedure to confirm the
malfunction is eliminated.

With CONSULT-II

NLAT0273S0401

Start engine.

Select “SELF-DIAG RESULTS” mode for CVT with CONSULT-
II.

With brake pedal depressed, shift the lever from “P”

→

“N”

→

“D”

→

“N”

→

“P” positions.

Without CONSULT-II

NLAT0273S0402

Start engine.

With brake pedal depressed, shift the lever from “P”

→

“N”

→

“D”

→

“N”

→

“P” positions.

Perform self-diagnosis.
Refer

“SELF-DIAGNOSTIC

PROCEDURE

(Without

CONSULT-II)”, AT-35.

LINE PRESSURE

SOLENOID VALVE

EXCEPT FOR EURO-OBD

Description (Cont’d)

AT-158

Wiring Diagram — AT — LPSV

NLAT0274

YAT180

LINE PRESSURE

SOLENOID VALVE

EXCEPT FOR EURO-OBD

Wiring Diagram — AT — LPSV

AT-159

Diagnostic Procedure

NLAT0275

CHECK VALVE RESISTANCE

1. Turn ignition switch to “OFF” position.
2. Disconnect terminal cord assembly connector in engine compartment.
3. Check resistance between terminal 8 and ground.

Resistance:

2.5 - 5

Ω

SAT686JA

OK or NG

GO TO 2.

1. Remove control valve assembly. Refer to AT-206.
2. Check the following items:

Line pressure solenoid valve
Refer to “Component Inspection”, AT-163.

Harness of terminal cord assembly for short or open

LINE PRESSURE

SOLENOID VALVE

EXCEPT FOR EURO-OBD

Diagnostic Procedure

AT-160

CHECK POWER SOURCE CIRCUIT

1. Turn ignition switch to “OFF” position.
2. Disconnect TCM harness connector.
3. Check resistance between terminal 8 and TCM harness connector terminal 2.

Resistance:

11.2 - 12.8

Ω

SAT267K

OK or NG

GO TO 3.

Check the following items:

Dropping resistor
Refer to “Component Inspection”, AT-163.

Harness for short or open between TCM terminal 2 and terminal cord assembly (Main
harness)

LINE PRESSURE

SOLENOID VALVE

EXCEPT FOR EURO-OBD

Diagnostic Procedure (Cont’d)

AT-161

CHECK POWER SOURCE CIRCUIT

1. Turn ignition switch to “OFF” position.
2. Check resistance between terminal 8 and TCM harness connector terminal 1.

Resistance:

Approx. 0

Ω

SAT268K

If OK, check harness for short to ground and short to power.

3. Reinstall any part removed.

OK or NG

GO TO 4.

Repair open circuit or short to ground or short to power in harness or connectors.

CHECK DTC

Perform Self-diagnosis Code confirmation procedure, AT-158.

OK or NG

INSPECTION END

1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness con-

nector.

LINE PRESSURE

SOLENOID VALVE

EXCEPT FOR EURO-OBD

Diagnostic Procedure (Cont’d)

AT-162

SAT686JA

Component Inspection

=NLAT0276

LINE PRESSURE SOLENOID VALVE

NLAT0276S01

For removal, refer to AT-206.

Resistance Check

NLAT0276S0101

Check resistance between two terminals.

Solenoid valve

Terminal No.

Resistance

(Approx.)

Line pressure
solenoid valve

Ground

2.5 - 5

Ω

SAT687JA

Operation Check

NLAT0276S0102

Check solenoid valve by listening for its operating sound while
applying battery voltage to the terminal and ground.

SAT232K

DROPPING RESISTOR

NLAT0276S02

Check resistance between two terminals.

Resistance:

11.2 - 12.8

Ω

LINE PRESSURE

SOLENOID VALVE

EXCEPT FOR EURO-OBD

Component Inspection

AT-163

Description

NLAT0277

The torque converter clutch solenoid valve is activated, with the
gear in “D

”, by the TCM in response to signals sent from the

vehicle speed and throttle position sensors. Lock-up piston opera-
tion will then be controlled.
Lock-up operation, however, is prohibited when CVT fluid tempera-
ture is too low.
When the accelerator pedal is depressed (less than 2/8) in lock-up
condition, the engine speed should not change abruptly. If there is
a big jump in engine speed, there is no lock-up.

CONSULT-II REFERENCE VALUE IN DATA MONITOR
MODE

NLAT0277S01

Remarks: Specification data are reference values.

Monitor item

Condition

Specification

Torque converter clutch solenoid valve
duty

Lock-up “OFF”

↓

Lock-up “ON”

Approximately 4%

↓

Approximately 94%

TCM TERMINALS AND REFERENCE VALUE

NLAT0277S02

Remarks: Specification data are reference values.

Terminal

No.

Wire color

Item

Condition

Judgement stan-

dard (Approx.)

GY/R

Torque converter
clutch solenoid
valve

When CVT performs lock-up.

12.0V

When CVT does not perform lock-
up.

ON BOARD DIAGNOSIS LOGIC

NLAT0277S03

Diagnostic trouble code

Malfunction is detected when ...

Check items (Possible cause)

: T/C CLUTCH SOL/V

TCM detects an improper voltage drop
when it tries to operate the solenoid
valve.

Harness or connectors
(The solenoid circuit is open or shorted.)

T/C clutch solenoid valve

: 7th judgement flicker

TORQUE CONVERTER CLUTCH

SOLENOID VALVE

EXCEPT FOR EURO-OBD

Description

AT-164

SAT250K

SAT818H

SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE

NLAT0277S04

After the repair, perform the following procedure to confirm the
malfunction is eliminated.

With CONSULT-II

NLAT0277S0401

Start engine.

Select “SELF-DIAG RESULTS” mode for CVT with CONSULT-
II.

Drive vehicle in D

→

D lock-up position.

Without CONSULT-II

NLAT0277S0402

Start engine.

Drive vehicle in D

→

D lock-up position.

Perform self-diagnosis.
Refer

“SELF-DIAGNOSTIC

PROCEDURE

(Without

CONSULT-II)”, AT-35.

TORQUE CONVERTER CLUTCH

SOLENOID VALVE

EXCEPT FOR EURO-OBD

Description (Cont’d)

AT-165

Wiring Diagram — AT — TCV

NLAT0278

YAT179

TORQUE CONVERTER CLUTCH

SOLENOID VALVE

EXCEPT FOR EURO-OBD

Wiring Diagram — AT — TCV

AT-166

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