NISSAN ALMERA 2001 Service Manual

2 CHECK A/T FLUID TEMPERATURE SENSOR WITH TERMINAL CORD ASSEMBLY
1. Turn ignition switch to ªOFFº position.
2. Disconnect terminal cord assembly connector in engine compartment.
3. Check resistance between terminals 6 and 7 when A/T is cold.
Resistance:
Cold [20ÉC (68ÉF)]
Approximately 2.5 kW
SAT912JA
4. Reinstall any part removed.
OK or NG
OK (With CONSULT-II)©GO TO 3.
OK (Without CONSULT-
II)©GO TO 4.
NG©1. Remove oil pan.
2. Check the following items:
+A/T fluid temperature sensor
Refer to ªComponent Inspectionº, AT-171.
+Harness of terminal cord assembly for short or open
3 CHECK INPUT SIGNAL OF A/T FLUID TEMPERATURE SENSOR (WITH CONSULT-II)
With CONSULT-II
1. Start engine.
2. Select ªECU INPUT SIGNALSº in ªDATA MONITORº mode for ªA/Tº with CONSULT-II.
3. Read out the value of ªFLUID TEMP SEº.
Voltage:
Cold [20ÉC (68ÉF)]®Hot [80ÉC (176ÉF)]:
Approximately 1.5V®0.5V
SAT614J
OK or NG
OK©GO TO 5.
NG©Check the following item:
+Harness for short or open between TCM, ECM and terminal cord assembly (Main har-
ness)
+Ground circuit for ECM
Refer to EC-178, ªTROUBLE DIAGNOSIS FOR POWER SUPPLYº.
BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM
POWER SOURCE)
EXCEPT FOR EURO-OBD
Diagnostic Procedure (Cont'd)
AT-169

4 CHECK INPUT SIGNAL OF A/T FLUID TEMPERATURE SENSOR (WITHOUT CONSULT-II)
Without CONSULT-II
1. Start engine.
2. Check voltage between TCM terminal 47 and ground while warming up A/T.
Voltage:
Cold [20ÉC (68ÉF)]®Hot [80ÉC (176ÉF)]:
Approximately 1.5V®0.5V
SAT463J
3. Turn ignition switch to ªOFFº position.
4. Disconnect TCM harness connector.
5. Check resistance between terminal 42 and ground.
Continuity should exist.
SAT464J
OK or NG
OK©GO TO 5.
NG©Check the following item:
+Harness for short or open between TCM, ECM and terminal cord assembly (Main har-
ness)
+Ground circuit for ECM
Refer to EC-178, ªTROUBLE DIAGNOSIS FOR POWER SUPPLYº.
5 CHECK DTC
Perform Self-diagnosis Code confirmation procedure, AT-166.
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.
BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM
POWER SOURCE)
EXCEPT FOR EURO-OBD
Diagnostic Procedure (Cont'd)
AT-170

SAT298F
Component InspectionNJAT0078A/T FLUID TEMPERATURE SENSORNJAT0078S01+For removal, refer to AT-351.
+Check resistance between two terminals while changing tem-
perature as shown at left.
Temperature ÉC (ÉF) Resistance
20 (68) Approximately 2.5 kW
80 (176) Approximately 0.3 kW
BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM
POWER SOURCE)
EXCEPT FOR EURO-OBD
Component Inspection
AT-171

DescriptionNJAT0041The engine speed signal is sent from the ECM to the TCM.
TCM TERMINALS AND REFERENCE VALUENJAT0041S01Remarks: Specification data are reference values.
Terminal
No.Wire color Item ConditionJudgement stan-
dard
39 L/OREngine speed
signal
Refer to EC-32, ªECM INSPECTION
TABLEº.Ð
ON BOARD DIAGNOSIS LOGICNJAT0041S02
Diagnostic trouble code Malfunction is detected when ... Check item (Possible cause)
: ENGINE SPEED SIG
TCM does not receive the proper voltage
signal from ECM.+Harness or connectors
(The sensor circuit is open or shorted.)
: 9th judgement flicker
SAT580J
SAT823H
SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURENJAT0041S04After the repair, perform the following procedure to confirm the
malfunction is eliminated.
With CONSULT-IINJAT0041S04011) Start engine.
2) Select ªSELF-DIAG RESULTSº mode for A/T 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 1/8 of the full
throttle position and driving for more than 10 seconds.
Without CONSULT-IINJAT0041S04021) 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 1/8 of the full
throttle position and driving for more than 10 seconds.
3) Perform self-diagnosis.
Refer to ªSELF-DIAGNOSTIC PROCEDURE (Without
CONSULT-II)º, AT-44.
ENGINE SPEED SIGNALEXCEPT FOR EURO-OBD
Description
AT-172

Wiring Diagram Ð AT Ð ENGSSNJAT0202
HAT095
ENGINE SPEED SIGNALEXCEPT FOR EURO-OBD
Wiring Diagram Ð AT Ð ENGSS
AT-173

Diagnostic ProcedureNJAT0042
1 CHECK DTC WITH ECM
Perform diagnostic test mode II (self-diagnostic results) for engine control. Check ignition signal circuit condition.
OK or NG
OK (With CONSULT-II)©GO TO 2.
OK (Without CONSULT-
II)©GO TO 3.
NG©Check ignition signal circuit for engine control. Refer to EC-547, ªIGNITION SIGNALº.
2 CHECK INPUT SIGNAL (With CONSULT-II)
With CONSULT-II
1. Start engine.
2. Select ªECU INPUT SIGNALSº in ªDATA MONITORº mode for ªA/Tº with CONSULT-II.
SAT580J
3. Read out the value of ªENGINE SPEEDº.
Check engine speed changes according to throttle position.
SAT645J
OK or NG
OK©GO TO 4.
NG©Check the following items:
+Harness for short or open between TCM and ECM
+Resistor and ignition coil
Refer to EC-547, ªIGNITION SIGNALº.
ENGINE SPEED SIGNALEXCEPT FOR EURO-OBD
Diagnostic Procedure
AT-174

3 CHECK INPUT SIGNAL (Without CONSULT-II)
Without CONSULT-II
1. Start engine.
2. Check voltage between TCM terminal 39 and ground.
Voltage (Idle speed):
Refer to EC-593, ªIdle Speed and Ignition Timingº.
SAT424JA
OK or NG
OK©GO TO 4.
NG©Check the following items:
+Harness for short or open between TCM and ECM
+Resistor and ignition coil
Refer to EC-547, ªIGNITION SIGNALº.
4 CHECK DTC
Perform Self-diagnosis Code confirmation procedure, AT-172.
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.
ENGINE SPEED SIGNALEXCEPT FOR EURO-OBD
Diagnostic Procedure (Cont'd)
AT-175

SAT283HC
DescriptionNJAT0061The 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
NJAT0061S01Remarks: 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 24%
¯
Approximately 95%
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 VALUENJAT0061S02Remarks: Specification data are reference values.
Terminal
No.Wire color Item ConditionJudgement stan-
dard
1 R/WLine pressure sole-
noid valve
When releasing accelerator pedal
after warming up engine.1.5 - 2.5V
When depressing accelerator pedal
fully after warming up engine.0.5V or less
2 P/BLine pressure sole-
noid valve (with
dropping resistor)When releasing accelerator pedal
after warming up engine.5 - 14V
When depressing accelerator pedal
fully after warming up engine.0.5V or less
ON BOARD DIAGNOSIS LOGICNJAT0061S03
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
: 10th judgement flicker
LINE PRESSURE SOLENOID
VALVE
EXCEPT FOR EURO-OBD
Description
AT-176

SAT580J
SAT824H
SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURENJAT0061S05After the repair, perform the following procedure to confirm the
malfunction is eliminated.
With CONSULT-IINJAT0061S05011) Start engine.
2) Select ªSELF-DIAG RESULTSº mode for A/T with CONSULT-
II.
3) With brake pedal depressed, shift the lever from ªPº®ªNº®
ªDº®ªNº®ªPº positions.
Without CONSULT-IINJAT0061S05021) Start engine.
2) With brake pedal depressed, shift the lever from ªPº®ªNº®
ªDº®ªNº®ªPº positions.
3) Perform self-diagnosis.
Refer to ªSELF-DIAGNOSTIC PROCEDURE (Without
CONSULT-II)º, AT-44.
LINE PRESSURE SOLENOID
VALVE
EXCEPT FOR EURO-OBD
Description (Cont'd)
AT-177

Wiring Diagram Ð AT Ð LPSVNJAT0209
HAT096
LINE PRESSURE SOLENOID
VALVE
EXCEPT FOR EURO-OBD
Wiring Diagram Ð AT Ð LPSV
AT-178