2001 NISSAN ALMERA ECU

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5. Touch ªA/Tº.
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6. Touch ªDATA MONITORº.
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7. Touch ªMAIN SIGNALSº or ªECU INPUT SIGNALSº.
8. Select ªNumerical Displayº, ªBarchart Displayº or ªLine Graph
Displayº.
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9. Touch ªSETTINGº to recording condition (ªAUTO TRIGº or
ªMANU TRIGº) and touch ªBACKº.
10. Touch ªStartº.
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11. When performing cruise test, touch ªRECORDº.
TROUBLE DIAGNOSIS Ð BASIC INSPECTION
Road Test (Cont'd)
AT-93

Diagnostic ProcedureNJAT0039
1 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.
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3. Read out the value of ªVHCL/S SE´A/Tº while driving.
Check the value changes according to driving speed.
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OK or NG
OK©GO TO 3.
NG©GO TO 2.
2 CHECK REVOLUTION SENSOR (With CONSULT-II)
With CONSULT-II
1. Start engine.
MTBL0452
+Harness for short or open between TCM, ECM and revolution sensor (Main harness)
OK or NG
OK©GO TO 3.
NG©Repair or replace damaged parts.
VEHICLE SPEED SENSOR´A/T
(REVOLUTION SENSOR)
EXCEPT FOR EURO-OBD
Diagnostic Procedure
AT-129

Diagnostic ProcedureNJAT0080
1 CHECK INPUT SIGNAL
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 ªVHCL/S SE´MTRº while driving.
Check the value changes according to driving speed.
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Without CONSULT-II
1. Start engine.
2. Check voltage between TCM terminal 40 and ground while driving at 2 to 3 km/h (1 to 2 MPH) for1m(3ft)ormore.
Voltage:
Voltage varies between less than 1V and more than 4.5V.
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OK or NG
OK©GO TO 2.
NG©Check the following items:
+Vehicle speed sensor and ground circuit for vehicle speed sensor
Refer to EL-144, ªMETERS AND GAUGESº.
+Harness for short or open between TCM and vehicle speed sensor (Main harness)
2 CHECK DTC
Perform Self-diagnosis Code confirmation procedure, AT-131.
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.
VHCL SPEED SEN´MTR VEHICLE
SPEED SENSOR´MTR
EXCEPT FOR EURO-OBD
Diagnostic Procedure
AT-133

Diagnostic ProcedureNJAT0071
1 CHECK DTC WITH ECM
Perform diagnostic test mode II (self-diagnostic results) for engine control.
Refer to EC-74, ªMalfunction Indicator Lamp (MIL)º.
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-207, 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-44.
2. Turn ignition switch to ªONº position.
(Do not start engine.)
3. Select ªECU INPUT SIGNALSº in ªDATA MONITORº mode for ªA/Tº with CONSULT-II.
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4. Read out the value of ªTHRTL POS SENº.
Voltage:
Fully-closed throttle:
Approximately 0.5V
Fully-open throttle:
Approximately 4V
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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
SENSOR
EXCEPT FOR EURO-OBD
Diagnostic Procedure
AT-137

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-44.
2. Turn ignition switch to ªONº position.
(Do not start engine.)
3. Select ªECU INPUT SIGNALSº in ªDATA MONITORº mode for ªA/Tº 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
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OK or NG
OK©GO TO 6.
NG©Check the following items:
+Throttle position switch Ð Refer to ªComponents Inspectionº, AT-141.
+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
SENSOR
EXCEPT FOR EURO-OBD
Diagnostic Procedure (Cont'd)
AT-139

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
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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
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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

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.
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3. Read out the value of ªENGINE SPEEDº.
Check engine speed changes according to throttle position.
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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

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DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION
PROCEDURE
NJAT0264S03CAUTION:
Always drive vehicle at a safe speed.
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.
2) Select ªDATA MONITORº mode for ªENGINEº with CONSULT-
II.
3) 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: More than 1.3V
Selector lever: D position (OD ªONº or ªOFFº)
With GST
Follow the procedure ªWith CONSULT-IIº.
DTC P0705 PARK/NEUTRAL POSITION (PNP) SWITCHEURO-OBD
Description (Cont'd)
AT-184