check engine NISSAN ALMERA TINO 2001 Service Service Manual

SAT250K
SAT252K
SAT255K
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION
PROCEDURE
NLAT0228S04CAUTION:
+Always drive vehicle at a safe speed.
+Be careful not to rev engine into the red zone on the
tachometer.
+Before start ªDIAGNOSTIC TROUBLE CODE (DTC) CON-
FIRMATION PROCEDUREº, confirm ªHiº or ªMidº or
ªLowº fixation by ªI/P PULLY SPDº and ªVHCL SPEED SEº
on ªDATA MONITOR MODEº.
+If hi-geared fixation, go to diagnostic procedure soon.
NOTE:
If ªDIAGNOSTIC TROUBLE CODE CONFIRMATION PROCE-
DUREº has been previously conducted, always turn ignition
switch ªOFFº and wait at least 5 seconds before conducting
the next test.
After the repair, perform the following procedure to confirm the
malfunction is eliminated.
With CONSULT-II
1) Turn ignition switch ªONº and select ªDATA MONITORº mode
for ªCVTº with CONSULT-II.
2) Make sure that output voltage of CVT fluid temperature sen-
sor is within the range below.
FLUID TEMP SEN: 0.5 - 1.5V
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) Select ªENGINEº mode for ªENGINEº with CONSULT-II.
4) Start engine and maintain the following conditions for at least
30 consecutive seconds.
TEST START FROM 0 km/h (0 MPH)
CONSTANT ACCELERATION: Keep 30 sec or more
VHCL SPEED SE: 10 km/h (6 MPH) or more
THRTL POS SEN: More than 1.3V
Selector lever: D position
ENG SPEED: 450 rpm or more
If the check result is NG, go to ªDIAGNOSTIC PROCEDUREº,
AT-118.
With GST
Follow the procedure ªWith CONSULT-IIº.
Diagnostic ProcedureNLAT0230
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.
DTC P1778 STEP MOTOR Ð FUNCTIONEURO-OBD
Description (Cont'd)
AT-118

DescriptionNLAT0232+The line pressure sensor detects line pressure of CVT, and
sends TCM the signal.
CONSULT-II REFERENCE VALUE IN DATA MONITOR
MODE
NLAT0232S01Remarks: 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 VALUENLAT0232S02Remarks: 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 LOGICNLAT0232S03
Diagnostic trouble code Malfunction is detected when ... Check items (Possible cause)
: LINE PRESS SEN
TCM receives an excessively low or high
voltage from the step motor.+Harness or connectors
(The sensor circuit is open or shorted.)
+Line pressure sensor
: P1791
: MI Code No. 1791
DTC P1791 LINE PRESSURE SENSOREURO-OBD
Description
AT-119

SAT250K
SAT252K
SAT255K
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION
PROCEDURE
NLAT0232S04CAUTION:
+Always drive vehicle at a safe speed.
+Be careful not to rev engine into the red zone on the
tachometer.
NOTE:
If ªDIAGNOSTIC TROUBLE CODE CONFIRMATION PROCE-
DUREº has been previously conducted, always turn ignition
switch ªOFFº and wait at least 5 seconds before conducting
the next test.
After the repair, perform the following procedure to confirm the
malfunction is eliminated.
With CONSULT-II
1) Turn ignition switch ªONº and select ªDATA MONITORº mode
for ªCVTº with CONSULT-II.
2) Make sure that output voltage of line temperature sensor is
within the range below.
FLUID TEMP SEN: 0.5 - 1.5V
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) Select ªDATA MONITORº mode for ªENGINEº with CONSULT-
II.
4) Start engine and maintain the following conditions for at least
5 consecutive seconds.
VHCL SPEED SE: 10 km/h (6 MPH) or more
THRTL POS SEN: 1.3V
Selector lever: D position
ENG SPEED: 450 rpm or more
If the check result is NG, go to ªDiagnostic Procedureº, AT-123.
With GST
Follow the procedure ªWith CONSULT-IIº.
DTC P1791 LINE PRESSURE SENSOREURO-OBD
Description (Cont'd)
AT-120

Diagnostic ProcedureNLAT0234
1 CHECK PRESSURE SENSOR
Refer to ªComponent Inspectionº, AT-124.
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 signalsº in ªDATA MONITORº mode for ªCVTº with CONSULT-II.
3. Read out the value of ªLINE PRES SENº 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 line pressure sensor (Main har-
ness)
+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-124.
OK or NG
OK©GO TO 4.
NG©Check the following items:
+Harness for short or open between TCM, ECM and line pressure sensor (Main har-
ness).
+Ground circuit for ECM
Refer to EC section (ªTROUBLE DIAGNOSIS FOR POWER SUPPLYº).
4 CHECK DTC
Perform Diagnostic Trouble Code (DTC) confirmation procedure, AT-120.
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.
DTC P1791 LINE PRESSURE SENSOREURO-OBD
Diagnostic Procedure
AT-123

SAT265K
Component Inspection=NLAT0235LINE PRESSURE SENSORNLAT0235S01+Start engine.
+Check voltage between terminals 1 and 6, 6 and 10.
Terminal No. Voltage
1 6 Approx. 0.5 - 4.5V
10 6 Approx. 4.5 - 5.5V
DTC P1791 LINE PRESSURE SENSOREURO-OBD
Component Inspection
AT-124

DescriptionNLAT0249ªCVT SAFE FUNCTIONº is function to protect CVT.
ON BOARD DIAGNOSIS LOGICNLAT0249S01
Diagnostic trouble code Malfunction is detected when ... Check items (Possible cause)
: CVT SAFE FUNCTION
TCM is malfunctioning TCM
: 10th judgement flicker
SAT250K
SAT252K
SAT270K
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION
PROCEDURE
NLAT0249S02With CONSULT-II
1) Turn ignition switch ªONº and select ªDATA MONITORº mode
for CVT with CONSULT-II.
2) Start engine.
3) Run engine for at least 2 seconds at idle speed.
Without CONSULT-II
1) Start engine.
2) Perform self-diagnosis. Refer to TCM Self-diagnostic Proce-
dure (No Tools), AT-28 Ð EURO-OBD/AT-35, Except for
EURO-OBD.
Diagnostic ProcedureNLAT0250
1 CHECK INPUT SIGNAL (With CONSULT-II)
1. Turn ignition switch to ªONº and select ªSELF-DIAG RESULTSº mode for CVT with CONSULT-II.
2. Touch ªERASEº.
Perform ªDIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDUREº above.
Is the ªCVT SAFE FUNCTIONº displayed again?
OK©Replace TCM.
NG©INSPECTION END
CVT SAFE FUNCTION
Description
AT-125

Diagnostic ProcedureNLAT0253
1 CHECK INPUT SIGNAL (With CONSULT-II)
With CONSULT-II
1. Start engine.
2. Select ªTCM INPUT SIGNALSº in ªDATA MONITORº mode for ªCVTº with CONSULT-II.
SAT250K
3. Read out the value of ªVEHICLE SPEEDº while driving.
Check the value changes according to driving speed.
SAT236K
OK or NG
OK©GO TO 3.
NG©GO TO 2.
2 CHECK SECONDARY SPEED SENSOR (With CONSULT-II)
With CONSULT-II
1. Start engine.
MTBL0550
+Harness for short or open between TCM and secondary speed sensor (Main harness)
OK or NG
OK©GO TO 3.
NG©Repair or replace damaged parts.
VEHICLE SPEED SENSOR CVT
(SECONDARY SPEED SENSOR)
EXCEPT FOR EURO-OBD
Diagnostic Procedure
AT-130

Diagnostic ProcedureNLAT0256
1 CHECK INPUT SIGNAL
With CONSULT-II
1. Start engine.
2. Select ªTCM INPUT SIGNALSº in ªDATA MONITORº mode for ªCVTº with CONSULT-II.
3. Read out the value of ªI/P PULLY SPDº while driving.
Check the value changes according to driving speed.
SAT236K
Without CONSULT-II
1. Start engine.
2. Check voltage between TCM terminal 38 and ground while driving at 20 km/h (12 MPH).
Approx. 900 Hz
SAT263K
OK or NG
OK©GO TO 2.
NG©Check the following items:
+Harness for short or open between TCM, ECM and primary speed sensor (Main har-
ness)
+Ground circuit for ECM
Refer to EC section (ªTROUBLE DIAGNOSIS FOR POWER SUPPLYº).
2 CHECK DTC
Perform Self-diagnosis Code confirmation procedure, AT-133.
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.
PRIMARY SPEED SENSOREXCEPT FOR EURO-OBD
Diagnostic Procedure
AT-136

ON BOARD DIAGNOSIS LOGICNLAT0257S03
Diagnostic trouble code Malfunction is detected when ... Check items (Possible cause)
: THROTTLE POSI SEN
TCM receives an excessively low or high
voltage from the sensor.+Harness or connectors
(The sensor circuit is open or shorted.)
+Throttle position sensor
+Throttle position switch
: 3rd judgement flicker
SAT250K
SAT808H
SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURENLAT0257S04After the repair, perform the following procedure to confirm the
malfunction is eliminated.
With CONSULT-IINLAT0257S04011) Start engine.
2) Select ªSELF-DIAG RESULTSº mode for CVT with CONSULT-
II.
3) Drive vehicle under the following conditions:
Selector lever in ªDº position, vehicle speed higher than 10
km/h (6 MPH), throttle opening greater than 1/2 of the full
throttle position and driving for more than 3 seconds.
Without CONSULT-IINLAT0257S04021) Start engine.
2) Drive vehicle under the following conditions:
Selector lever in ªDº position, vehicle speed higher than 10
km/h (6 MPH), throttle opening greater than 1/2 of the full
throttle position and driving for more than 3 seconds.
3) Perform self-diagnosis.
Refer to ªSELF-DIAGNOSTIC PROCEDURE (Without
CONSULT-II)º, AT-35.
THROTTLE POSITION SENSOREXCEPT FOR EURO-OBD
Description (Cont'd)
AT-138

Diagnostic ProcedureNLAT0259
1 CHECK DTC WITH ECM
Perform diagnostic test mode II (self-diagnostic results) for engine control.
Refer to EC SECTION , ªMalfunction Indicator (MI)º, ªON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONº.
OK or NG
OK (With CONSULT-II)©GO TO 2.
OK (Without CONSULT-
II)©GO TO 3.
NG©Check throttle position sensor circuit for engine control. Refer to EC section , ªDTC
P0120 THROTTLE POSITION SENSORº.
2 CHECK INPUT SIGNAL (WITH CONSULT-II)
With CONSULT-II
1. Apply vacuum to the throttle opener then check the following. Refer from step 1 to 5 of ªPreparationº, ªSELF-DIAG-
NOSTIC 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.
SAT250K
4. Read out the value of ªTHRTL POSI SENº.
Voltage:
Fully-closed throttle:
Approximately 0.5V
Fully-open throttle:
Approximately 4V
SAT236K
OK or NG
OK©GO TO 4.
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
AT-141