check engine NISSAN ALMERA TINO 2001 Service Workshop Manual

3 CHECK INPUT SIGNAL (WITHOUT CONSULT-II)
Without CONSULT-II
1. Apply vacuum to the throttle opener then check the following. Refer to steps 1 to 5 of ªPreparationº, ªSELF-DIAGNOS-
TIC PROCEDURE (Without CONSULT-II)º, AT-35.
2. Turn ignition switch to ªONº position.
(Do not start engine.)
3. Check voltage between TCM terminals 41 and 42 while accelerator pedal is depressed slowly.
Voltage:
Fully-closed throttle valve:
Approximately 0.5V
Fully-open throttle valve:
Approximately 4V
(Voltage rises gradually in response to throttle position)
SAT453J
OK or NG
OK©GO TO 5.
NG©Check harness for short or open between ECM and TCM regarding throttle position sen-
sor circuit. (Main harness)
THROTTLE POSITION SENSOREXCEPT FOR EURO-OBD
Diagnostic Procedure (Cont'd)
AT-142

4 CHECK THROTTLE POSITION SWITCH CIRCUIT (WITH CONSULT-II)
With CONSULT-II
1. Apply vacuum to the throttle opener, then check the following. Refer to steps 1 to 5 of ªPreparationº, ªSELF-DIAGNOS-
TIC PROCEDURE (Without CONSULT-II)º, AT-35.
2. Turn ignition switch to ªONº position.
(Do not start engine.)
3. Select ªTCM INPUT SIGNALSº in ªDATA MONITORº mode for ªCVTº with CONSULT-II.
4. Read out ªCLOSED THL/SWº and ªW/O THRL/P-SWº depressing and releasing accelerator pedal.
Check the signal of throttle position switch is indicated properly.
MTBL0011
SAT264K
OK or NG
OK©GO TO 6.
NG©Check the following items:
+Throttle position switch Ð Refer to ªComponents Inspectionº, AT-145.
+Harness for short or open between ignition switch and throttle position switch (Main
harness)
+Harness for short or open between throttle position switch and TCM (Main harness)
THROTTLE POSITION SENSOREXCEPT FOR EURO-OBD
Diagnostic Procedure (Cont'd)
AT-143

5 CHECK THROTTLE POSITION SWITCH CIRCUIT (WITHOUT CONSULT-II)
Without CONSULT-II
1. Apply vacuum to the throttle opener, then check the following. Refer to steps 1 to 5 of ªPreparationº, ªSELF-DIAGNOS-
TIC PROCEDURE (Without CONSULT-II)º, AT-35.
2. Turn ignition switch to ªONº position.
(Do not start engine.)
3. Check voltage between TCM terminals 16, 17 and ground while depressing, and releasing accelerator pedal slowly.
(After warming up engine)
MTBL0137
SAT454JA
OK or NG
OK©GO TO 6.
NG©Check the following items:
+Throttle position switch Ð Refer to ªComponents Inspectionº, AT-145.
+Harness for short or open between ignition switch and throttle position switch (Main
harness)
+Harness for short or open between throttle position switch and TCM (Main harness)
6 CHECK DTC
Perform Self-diagnosis Code confirmation procedure, AT-138.
OK or NG
OK©INSPECTION END
NG©1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness con-
nector.
THROTTLE POSITION SENSOREXCEPT FOR EURO-OBD
Diagnostic Procedure (Cont'd)
AT-144

DescriptionNLAT0261The step motor is turned ON/OFF 4 times according to the signal
from TCM. As a result, the flow of line pressure to primary pulley
is changed and pulley ratio is controlled.
CONSULT-II REFERENCE VALUE IN DATA MONITOR
MODE
NLAT0261S05Remarks: Specification data are reference values.
Monitor item Condition Specification
Step motorThe vehicle runs a safe condition and
press/depress accelerator pedal.ON/OFF
TCM TERMINALS AND REFERENCE VALUENLAT0261S01Remarks: Specification data are reference values.
Terminal
No.Wire color Item ConditionJudgement stan-
dard (Approx.)
11 P U
Step motorWithin 2 seconds after key switch ªONº, the time measurement by
using the pulse width measurement function (Hi level) of CON-
SULT-II.
+CONSULT-II cable connect to data link connector.
+This inspection cannot be measured by circuit tester.30.0 msec
12 L/W10.0 msec
20 L/Y30.0 msec
21 P/L10.0 msec
ON BOARD DIAGNOSIS LOGICNLAT0261S02
Diagnostic trouble code Malfunction is detected when ... Check items (Possible cause)
: STEP MOTOR TCM detects an improper voltage drop
when it tries to operate the solenoid
valve.+Harness or connectors
(The solenoid circuit is open or shorted.)
+Stepping motor circuit
: 4th judgement flicker
SAT250K
SAT809HA
SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURENLAT0261S03After the repair, perform the following procedure to confirm the
malfunction is eliminated.
With CONSULT-IINLAT0261S03011) Start engine.
2) Select ªSELF-DIAG RESULTSº mode for CVT with CONSULT-
II.
3) Drive vehicle in D position.
Without CONSULT-IINLAT0261S03021) Start engine.
2) Drive vehicle in D position.
3) Perform self-diagnosis.
Refer to ªSELF-DIAGNOSTIC PROCEDURE (Without
CONSULT-II)º, AT-35.
STEPPING MOTOR Ð CIRCUITEXCEPT FOR EURO-OBD
Description
AT-146

DescriptionNLAT0267+The step motor is ON/OFF of 4 aspects changes 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 detects when electrical system is OK but,
mechanical system is NG.
+This diagnosis item detects when the state that the changing
the speed mechanism in unit does not operate normally.
CONSULT-II REFERENCE VALUE IN DATA MONITOR
MODE
NLAT0267S01It is monitoring whether ªCVT RATIO: 2.32 - 0.47º changes similarly
to ªPLY CONT STEP: 3 - 200º by DATA MONITOR mode.
ON BOARD DIAGNOSIS LOGICNLAT0267S02
Diagnostic trouble code Malfunction is detected when ... Check items (Possible cause)
: STEP MOTOR/FNCTN*+Step motor is not operating according
to the TCM.+Step motor
*: This detected item is according to the ªSELF-DIAG RESULTSº for ªENGINEº on CONSULT-II.
SAT250K
SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURENLAT0267S05After the repair, perform the following procedure to confirm the
malfunction is eliminated.
With CONSULT-IINLAT0267S05011) Start engine.
2) Select ªSELF-DIAG RESULTSº mode for ENGINE with CON-
SULT-II.
3) Drive vehicle in D position.
Diagnostic ProcedureNLAT0268
1 CHECK STEP MOTOR
+It is monitoring whether ªCVT ratio: 2.32 - 0.47º changes similarly to ªPLY CONT STEP: -3 - 200º by DATA MONITOR
mode.
+If no CONSULT-II, inspect the engine speed (rise and descend) about vehicle speed and throttle opening angle, and
check shift change.
OK or NG
OK©INSPECTION END
NG©Replace CVT assembly.
STEP MOTOR Ð FUNCTIONEXCEPT FOR EURO-OBD
Description
AT-150

DescriptionNLAT0269+The line pressure sensor detects line pressure of CVT, and
sends TCM the signal.
CONSULT-II REFERENCE VALUE IN DATA MONITOR
MODE
NLAT0269S01Remarks: Specification data are reference values.
Monitor item Condition Specification
Line pressure sensorThrottle valve fully closed (PL Duty: 4%)
¯
Throttle valve fully depressed
(PL Duty: 94%)Approx. 1.0V
¯
Approx. 4.0V
TCM TERMINALS AND REFERENCE VALUENLAT0269S02Remarks: Specification data are reference values.
Terminal
No.Wire color Item ConditionJudgement stan-
dard (Approx.)
37 W
Line pressure
sensor
When engine runs at idle speed. 1.0V
When engine runs at stall speed. 4.0V
42 B
ÐÐ
46 R/LÐ 4.5 - 5.5V
ON BOARD DIAGNOSIS LOGICNLAT0269S03
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 SENSOREXCEPT FOR EURO-OBD
Description
AT-151

Diagnostic ProcedureNLAT0271
1 CHECK PRESSURE SENSOR
Refer to ªComponent Inspectionº, AT-156.
OK or NG
OK (With CONSULT-II)©GO TO 2.
OK (Without CONSULT-
II)©GO TO 3.
NG©Repair or replace pressure sensor.
2 CHECK INPUT SIGNAL (With CONSULT-II)
With CONSULT-II
1. Start engine.
2. Select ªTCM Input Item Parameter Listº in ªDATA MONITORº mode for ªCVTº with CONSULT-II.
3. Read out the value of ªLINE PRES DTYº 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
OK©GO TO 4.
NG©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 (ªTROUBLE DIAGNOSIS FOR POWER SUPPLYº).
3 CHECK INPUT SIGNAL (Without CONSULT-II)
Without CONSULT-II
Refer to ªComponent Inspectionº, AT-156.
OK or NG
OK©GO TO 4.
NG©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 (ªTROUBLE DIAGNOSIS FOR POWER SUPPLYº).
4 CHECK DTC
Perform ªSELF-DIAGNOSIS CONFIRMATION PROCEDUREº, AT-152.
OK or NG
OK©INSPECTION END
NG©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 SENSOREXCEPT FOR EURO-OBD
Diagnostic Procedure
AT-155

SAT265K
Component Inspection=NLAT0272LINE PRESSURE SENSORNLAT0272S01+Start engine.
+Check voltage between terminals 1 and 6, 10 and 6.
Terminal No. Voltage
1 6 Approx. 0.5 - 4.5V
10 6 Approx. 4.5 - 5.5V
LINE PRESSURE SENSOREXCEPT FOR EURO-OBD
Component Inspection
AT-156

DescriptionNLAT0273The 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 ªONº. To confirm the line
pressure duty cycle at low pressure, the accelerator (throttle)
should be open until the closed throttle position switch is
ªOFFº.
CONSULT-II REFERENCE VALUE IN DATA MONITOR
MODE
NLAT0273S01Remarks: Specification data are reference values.
Monitor item Condition Specification
Line pressure solenoid valve dutySmall 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 ªONº. To confirm the line pressure duty
cycle at low pressure, the accelerator (throttle) should be open until the closed throttle position switch is ªOFFº.
TCM TERMINALS AND REFERENCE VALUENLAT0273S02Remarks: Specification data are reference values.
Terminal
No.Wire color Item ConditionJudgement stan-
dard (Approx.)
1 R/WLine pressure
solenoid valve
When releasing accelerator pedal
after warming up engine.2.8V
When depressing accelerator pedal
fully after warming up engine.1.4V
2 P/BLine 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 LOGICNLAT0273S03
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

Diagnostic ProcedureNLAT0275
1 CHECK VALVE RESISTANCE
1. Turn ignition switch to ªOFFº position.
2. Disconnect terminal cord assembly connector in engine compartment.
3. Check resistance between terminal 8 and ground.
Resistance:
2.5-5W
SAT686JA
OK or NG
OK©GO TO 2.
NG©1. Remove control valve assembly. Refer to AT-206.
2. Check the following items:
+Line pressure solenoid valve
Refer to ªComponent Inspectionº, AT-163.
+Harness of terminal cord assembly for short or open
LINE PRESSURE
SOLENOID VALVE
EXCEPT FOR EURO-OBD
Diagnostic Procedure
AT-160