NISSAN ALMERA TINO 2001 Service Repair Manual

5 CHECK THROTTLE POSITION SWITCH CIRCUIT (Without CONSULT-II)
Without CONSULT-II
1. Refer to steps 1 to 7 of ªPreparationº, ªTCM Self-diagnostic Procedure (No Tools)º, AT-28.
2. Turn ignition switch to ªOFFº position.
3. Turn ignition switch to ªONº position.
(Do not start engine.)
4. Check voltage between TCM terminals 16, 17 and ground while depressing, and releasing accelerator pedal slowly.
(After warming up engine)
MTBL0137
SAT454JD
OK or NG
OK©GO TO 6.
NG©Check the following items:
+Throttle position switch Ð Refer to ªComponents Inspectionº, AT-111.
+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 Diagnostic Trouble Code (DTC) confirmation procedure, AT-105.
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 P1705 THROTTLE POSITION SENSOREURO-OBD
Diagnostic Procedure (Cont'd)
AT-110

SAT234K
Component Inspection=NLAT0072THROTTLE POSITION SWITCHNLAT0072S01Closed Throttle Position Switch (Idle position)NLAT0072S0101+Check continuity between terminals 4 and 5.
Refer to steps 1 to 6 of ªPreparationº, ªTCM Self-diagnostic
Procedure (No Tools)º, AT-28.
Accelerator pedal condition Continuity
Released Yes
Depressed No
+To adjust closed throttle position switch, refer to EC section
(ªBasic Inspectionº, ªTROUBLE DIAGNOSIS Ð BASIC
INSPECTIONº).
SAT235K
Wide Open Throttle Position SwitchNLAT0072S0102+Check continuity between terminals 5 and 6.
Accelerator pedal condition Continuity
Released No
Depressed Yes
DTC P1705 THROTTLE POSITION SENSOREURO-OBD
Component Inspection
AT - 111

DescriptionNLAT0224+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.
CONSULT-II REFERENCE VALUE IN DATA MONITOR
MODE
NLAT0224S01Remarks: 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 VALUENLAT0224S02Remarks: 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 LOGICNLAT0224S03
Diagnostic trouble code Malfunction is detected when ... Check items (Possible cause)
: STEP MOTOR/CIRC
When in operating step motor ON and
OFF, there is no proper change in the
voltage of the terminal TCM which corre-
sponds to it.+Harness or connectors
(The step motor circuit is open or
shorted.)
+Step motor
: P1777
: MI Code No. 1777
DTC P1777 STEP MOTOR Ð CIRCUITEURO-OBD
Description
AT-112

SAT250K
SAT255K
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION
PROCEDURE
NLAT0224S04CAUTION:
+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) Drive vehicle for at least 5 consecutive seconds.
If the check result is ªNGº, go to ªDiagnostic Procedureº,
AT-115.
With GST
Follow the procedure ªWith CONSULT-IIº.
DTC P1777 STEP MOTOR Ð CIRCUITEURO-OBD
Description (Cont'd)
AT-113

Wiring Diagram Ð AT Ð STMNLAT0225
YAT182
DTC P1777 STEP MOTOR Ð CIRCUITEURO-OBD
Wiring Diagram Ð AT Ð STM
AT-114

Diagnostic ProcedureNLAT0226
1 CHECK POWER SOURCE CIRCUIT
1. Turn ignition switch to ªONº position.
2. Check ªSELF-DIAG RESULTSº with CONSULT-II.
3. If ªCVT SAFE FUNCTIONº activate, refer to ªCVT SAFE FUNCTIONº, AT-125.
4. Turn ignition switch to ªOFFº position.
5. Disconnect TCM harness connector.
6. Check continuity between terminal 2, 3, 4, 5 and TCM harness connector terminal 11, 12, 20, 21.
Continuity should exist.
SAT655JA
If OK, check harness for short to ground and short to power.
7. Reinstall any part removed.
OK or NG
OK©GO TO 2.
NG©Repair open circuit or short to ground or short to power in harness or connectors.
2 CHECK DTC
Perform Diagnostic Trouble Code (DTC) confirmation procedure, AT-113.
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 P1777 STEP MOTOR Ð CIRCUITEURO-OBD
Diagnostic Procedure
AT-115

SAT690JA
Component Inspection=NLAT0227STEP MOTORNLAT0227S01Resistance CheckNLAT0227S0101+Check resistance between terminals.
Control valve Terminal No. Resistance (Approx.)
Step motor2 and 3
28W
4 and 5
2 and ground
14W 3 and ground
4 and ground
5 and ground
DTC P1777 STEP MOTOR Ð CIRCUITEURO-OBD
Component Inspection
AT-116

DescriptionNLAT0228+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
NLAT0228S01It is monitoring whether ªCVT RATIO: 2.32 - 0.47º changes similarly
to ªPLY CONT STEP: 3 - 200º by DATA MONITOR mode.
ON BOARD DIAGNOSIS LOGICNLAT0228S03
Diagnostic trouble code Malfunction is detected when ... Check items (Possible cause)
: STEP MOTOR/FNCTN
When not changing the speed according
to the instruction of TCM.+Step motor
: P1778
: MI Code No. 1778
DTC P1778 STEP MOTOR Ð FUNCTIONEURO-OBD
Description
AT-117

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