2001 NISSAN ALMERA check engine

Diagnostic ProcedureNJAT0325
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.
SAT614J
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.
SAT465JB
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 Diagnostic Trouble Code (DTC) confirmation procedure, AT-282.
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 VHCL SPEED SEN´MTR VEHICLE SPEED SENSOR´MTREURO-OBD
Diagnostic Procedure
AT-285

SAT574J
DescriptionNJAT0326The TCM consists of a microcomputer and connectors for signal
input and output and for power supply. The unit controls the A/T.
ON BOARD DIAGNOSIS LOGICNJAT0326S01
Diagnostic Trouble Code No. Malfunction is detected when .... Check Item (Possible Cause)
: CONTROL UNIT (RAM),
CONTROL UNIT (ROM)TCM memory (RAM) or (ROM) is mal-
functioning.+TCM
SAT014K
SAT971J
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION
PROCEDURE
NJAT0326S02NOTE:
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.
With CONSULT-II
1) Turn ignition switch ªONº and select ªDATA MONITORº mode
for A/T with CONSULT-II.
2) Start engine.
3) Run engine for at least 2 seconds at idle speed.
Diagnostic ProcedureNJAT0327
1 INSPECTION START (WITH CONSULT-II)
With CONSULT-II
1. Turn ignition switch ªONº and select ªSELF DIAGNOSISº mode for A/T with CONSULT-II.
2. Touch ªERASEº.
©GO TO 2.
DTC CONTROL UNIT (RAM), CONTROL UNIT (ROM)
Description
AT-286

SAT574J
DescriptionNJAT0328The TCM consists of a microcomputer and connectors for signal
input and output and for power supply. The unit controls the A/T.
ON BOARD DIAGNOSIS LOGICNJAT0328S01
Diagnostic trouble code Malfunction is detected when ... Check item (Possible cause)
: CONT UNIT (EEP ROM) TCM memory (EEP ROM) is malfunction-
ing.+TCM
SAT014K
SAT971J
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION
PROCEDURE
NJAT0328S02NOTE:
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.
With CONSULT-II
1) Turn ignition switch ªONº and select ªDATA MONITORº mode
for A/T with CONSULT-II.
2) Start engine.
3) Run engine for at least 2 seconds at idle speed.
DTC CONTROL UNIT (EEP ROM)
Description
AT-288

SAT466J
1. O/D OFF Indicator Lamp Does Not Come On=NJAT0331SYMPTOM:
O/D OFF indicator lamp does not come on for about 2 seconds
when turning ignition switch to ªONº.
1 CHECK TCM POWER SOURCE
1. Turn ignition switch to ªONº position.
(Do not start engine.)
2. Check voltage between TCM terminals 10, 19, 28 and ground.
Voltage: Battery voltage
SAT467J
3. Turn ignition switch to ªOFFº position.
4. Check voltage between TCM terminal 28 and ground.
Voltage: Battery voltage
OK or NG
OK©GO TO 2.
NG©Check the following items:
+Harness for short or open between ignition switch and TCM terminals 10, 19 and 28
(Main harness).
+Refer to ªWiring Diagram Ð AT Ð MAINº, AT-123.
+Ignition switch and fuse Refer to EL-10, ªPOWER SUPPLY ROUTINGº.
TROUBLE DIAGNOSES FOR SYMPTOMS
1. O/D OFF Indicator Lamp Does Not Come On
AT-296

2. Engine Cannot Be Started In ªPº and ªNº
Position
=NJAT0332SYMPTOM:
+Engine cannot be started with selector lever in ªPº or ªNº
position.
+Engine can be started with selector lever in ªDº, ª2º, ª1º
or ªRº position.
1 CHECK PNP SWITCH CIRCUIT
With CONSULT-II
Does ªECU INPUT SIGNALSº in ªDATA MONITORº show damage to PNP switch circuit?
Without CONSULT-II
Does self-diagnosis show damage to PNP switch circuit?
SAT367J
YesorNo
Ye s©Check PNP switch circuit. Refer to ª21. TCM Self-diagnosis Does Not Activate (PNP,
Overdrive Control and Throttle Position Switches Circuit Checks)º, AT-334.
No©GO TO 2.
2 CHECK PNP SWITCH INSPECTION
Check for short or open of PNP switch harness connector terminals 1 and 2.
Refer to ª21. TCM Self-diagnosis Does Not Activate (PNP, Overdrive Control and Throttle Position Switches Circuit
Checks)º, AT-334.
SAT408JA
OK or NG
OK©GO TO 3.
NG©Repair or replace PNP switch.
TROUBLE DIAGNOSES FOR SYMPTOMS
2. Engine Cannot Be Started In ªPº and ªNº Position
AT-299

3 CHECK STARTING SYSTEM
Check starting system. Refer to SC-13, ªSTARTING SYSTEMº.
OK or NG
OK©INSPECTION END
NG©Repair or replace damaged parts.
3. In ªPº Position, Vehicle Moves Forward Or
Backward When Pushed
NJAT0333SYMPTOM:
Vehicle moves when it is pushed forward or backward with
selector lever in ªPº position.
1 CHECK PARKING COMPONENTS
Check parking components. Refer to ªParking Pawl Componentsº, AT-361, 362.
SAT282F
OK or NG
OK©INSPECTION END
NG©Repair or replace damaged parts.
TROUBLE DIAGNOSES FOR SYMPTOMS
2. Engine Cannot Be Started In ªPº and ªNº Position (Cont'd)
AT-300

13. A/T Does Not Hold Lock-up Condition=NJAT0343SYMPTOM:
A/T does not hold lock-up condition for more than 30 seconds.
1 CHECK DIAGNOSTIC RESULTS
Does self-diagnosis show damage to engine speed signal circuit after cruise test?
SAT347H
YesorNo
Ye s©Check engine speed signal circuit. Refer to AT-172 (General and except for Euro-OBD)/
AT-200 (Euro-OBD).
No©GO TO 2.
2 CHECK A/T FLUID CONDITION
1. Remove oil pan.
2. Check A/T fluid condition.
SAT171B
OK or NG
OK©GO TO 3.
NG©GO TO 5.
3 DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly. Refer to AT-351.
2. Check the following items:
+Torque converter clutch control valve
+Pilot valve
+Pilot filter
OK or NG
OK©GO TO 4.
NG©Repair or replace damaged parts.
TROUBLE DIAGNOSES FOR SYMPTOMS
13. A/T Does Not Hold Lock-up Condition
AT-325

15. Engine Speed Does Not Return To Idle
(Light Braking D
4®D3)=NJAT0345SYMPTOM:
+Engine speed does not smoothly return to idle when A/T
shifts from D
4to D3.
+Vehicle does not decelerate by engine brake when turning
overdrive control switch OFF.
+Vehicle does not decelerate by engine brake when shifting
A/T from ªDº to ª2º position.
1 CHECK SELF-DIAGNOSTIC RESULTS
Does self-diagnosis show damage to overrun clutch solenoid valve circuit after cruise test?
SAT348H
YesorNO
Ye s©Check overrun clutch solenoid valve circuit. Refer to AT-154 (General and except for
Euro-OBD)/AT-268 (Euro-OBD).
No©GO TO 2.
2 CHECK THROTTLE POSITION SENSOR
Check throttle position sensor. Refer to EC-207, ªDTC P0120 THROTTLE POSITION SENSORº.
SAT004K
OK or NG
OK©GO TO 3.
NG©Repair or replace throttle position sensor. (AT-134: General and except for Euro-OBD/AT-
258: Euro-OBD)
TROUBLE DIAGNOSES FOR SYMPTOMS
15. Engine Speed Does Not Return To Idle (Light Braking D4®D3)
AT-328