2001 NISSAN X-TRAIL check engine

DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM
POWER SOURCE)
AT-197
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
3.CHECK INPUT SIGNAL OF A/T FLUID TEMPERATURE SENSOR (WITH CONSULT-II)
With CONSULT-II
1. Start engine.
2. Select “TCM INPUT SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Read out the value of “FLUID TEMP SE”.
OK or NG
OK >> GO TO 5.
NG >> Check the following item:
●Harness for short or open between TCM, ECM and
terminal cord assembly
●Ground circuit for ECM
Refer to EC-267, "
DTC P1065 ECM POWER SUP-
PLY" (QR25DE) or EC-995, "DTC P1065 ECM POWER SUPPLY" (QR20DE).
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.
3. Turn ignition switch to “OFF” position.
4. Disconnect TCM harness connector.
5. Check resistance between terminal 42 and ground.
OK or NG
OK >> GO TO 5.
NG >> Check the following item:
●Harness for short or open between TCM, ECM and
terminal cord assembly
●Ground circuit for ECM
Refer to EC-267, "
DTC P1065 ECM POWER SUP-
PLY" (QR25DE) or EC-995, "DTC P1065 ECM
POWER SUPPLY" (QR20DE). Vo l t a g e :
Cold [20°C (68°F)]→ Hot [80°C (176°F)]
Approximately 1.5V → 0.5V
SAT614J
Vo l t a g e :
Cold [20°C (68°F)]→ Hot [80°C (176°F)]
Approximately 1.5V → 0.5V
SCIA0738E
Continuity should exist.
SCIA0739E

AT-202
[EURO-OBD]
DTC VEHICLE SPEED SENSOR MTR
Diagnostic Procedure
ECS004SO
1. CHECK INPUT SIGNAL
With CONSULT-II
1. Start engine.
2. Select “TCM INPUT SIGNALS” in “DATA MONITOR” mode for
“A/T” with CONSULT-II.
3. Read out the value of “VHCL/S SE·MTR” while driving.
Check the value changes according to driving speed.
Without CONSULT-II
1. Start engine.
2. Check voltage between TCM terminal 40 and ground while driv-
ing at 2 to 3 km/h (1 to 2 MPH) for 1 m (3 ft) or more.
OK or NG
OK >> GO TO 2.
NG >> Check the following items. If any items are damaged,
repair or replace damaged parts.
●Combination meter
Refer to DI-4, "
COMBINATION METERS (LHD MODELS)" or DI-24, "COMBINATION
METERS (RHD MODELS)" .
●Harness for short or open between TCM and combination meter
●4WD/ABS control unit
Refer to BRC-24, "
SELF-DIAGNOSIS" .
●Harness for short or open between 4WD/ABS control unit and combination meter
2. CHECK DTC
Perform Diagnostic Trouble Code (DTC) confirmation procedure. Refer to AT- 2 0 0 , "
DIAGNOSTIC TROUBLE
CODE (DTC) CONFIRMATION PROCEDURE" .
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 connector.
SAT614J
Voltage: Voltage varies between less than 1V and
more than 4.5V.
SCIA0717E

DTC CONTROL UNIT (RAM), CONTROL UNIT (ROM)
AT-203
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
DTC CONTROL UNIT (RAM), CONTROL UNIT (ROM)PFP:31036
DescriptionECS004SP
The 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 LOGIC
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE
NOTE:
If “DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCE-
DURE” has been previously conducted, always turn ignition
switch “OFF” and wait at least 5 seconds before conducting the
next test.
With CONSULT-II
1. Turn ignition switch “ON” and select “DATA MONITOR” mode for
A/T with CONSULT-II.
2. Start engine.
3. Run engine for at least 2 seconds at idle speed.
Diagnostic ProcedureECS004SQ
1.INSPECTION START (WITH CONSULT-II)
With CONSULT-II
1. Turn ignition switch “ON” and select “SELF DIAGNOSIS” mode for A/T with CONSULT-II.
2. Touch “ERASE”.
>> GO TO 2.
SAT574J
Diagnostic Trouble Code No. Malfunction is detected when.... Check Item (Possible Cause)
: CONTROL UNIT (RAM),
CONTROL UNIT (ROM)TCM memory (RAM) or (ROM) is malfunc-
tioning.
●TCM
SAT014K
SAT971J

DTC CONTROL UNIT(EEPROM)
AT-205
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
DTC CONTROL UNIT(EEPROM)PFP:31036
DescriptionECS004SR
The 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 LOGIC
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE
NOTE:
If “DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCE-
DURE” has been previously conducted, always turn ignition
switch “OFF” and wait at least 5 seconds before conducting the
next test.
With CONSULT-II
1. Turn ignition switch “ON” and select “DATA MONITOR” mode for
A/T with CONSULT-II.
2. Start engine.
3. Run engine for at least 2 seconds at idle speed.
SAT574J
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

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-209
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
O/D OFF Indicator Lamp Does Not Come OnECS004SU
SYMPTOM:
O/D OFF indicator lamp does not come on for about 2 seconds
when turning ignition switch to “ON”.
1.CHECK TCM POWER SOURCE
1. Turn ignition switch to “ON” position.
(Do not start engine.)
2. Check voltage between TCM terminals 10, 19, 28 and ground.
3. Turn ignition switch to “OFF” position.
4. Check voltage between TCM terminal 28 and ground.
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
●Refer to AT- 3 5 0 , "Wiring Diagram — AT — MAIN" .
●Ignition switch and fuse Refer to PG-2, "POWER SUPPLY ROUTING" .
2.CHECK TCM GROUND CIRCUIT
1. Turn ignition switch to “OFF” position.
2. Disconnect TCM harness connector.
3. Check continuity between TCM terminals 25, 48 and ground.
If OK, check harness for short to ground and short to power.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors. Refer to AT- 3 5 0 , "
Wiring Dia-
gram — AT — MAIN" .
SCIA0765E
Voltage: Battery voltage
Voltage: Battery voltage
SCIA0713E
Continuity should exist.
SCIA0766E

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-211
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
Engine Cannot Be Started In “P” and “N” PositionECS004SV
SYMPTOM:
●Engine cannot be started with selector lever in “P” or “N” position.
●Engine can be started with selector lever in “D”, “2”, “1” or “R” position.
1.CHECK PNP SWITCH CIRCUIT
With CONSULT-II
Does “TCM INPUT SIGNALS” in “DATA MONITOR” show damage to PNP switch circuit?
Without CONSULT-II
Does self-diagnosis show damage to PNP switch circuit?
Ye s o r N o
Yes >> Check PNP switch circuit. Refer to AT- 2 4 1 , "TCM Self-
diagnosis Does Not Activate" .
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 AT-241, "
TCM Self-diagnosis Does Not Activate" .
OK or NG
OK >> GO TO 3.
NG >> Repair or replace PNP switch.
3.CHECK CONTROL CABLE
Check control cable. Refer to AT-416, "
Control Cable Adjustment" .
OK or NG
OK >> GO TO 4.
NG >> Adjust control cable. Refer to AT- 4 1 6 , "
Control Cable
Adjustment" .
4.CHECK STARTING SYSTEM
Check starting system. Refer to SC-20, "
STARTING SYSTEM" .
OK or NG
OK >>INSPECTION END
NG >> Repair or replace damaged parts.
SCIA0706E
SCIA0768E
SAT023JB

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-229
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
A/T Does Not Perform Lock-upECS004T5
SYMPTOM:
A/T does not perform lock-up at the specified speed.
1.CHECK SELF-DIAGNOSTIC RESULTS
Does self-diagnosis show damage to A/T fluid temperature sensor, vehicle speed sensor·A/T (revolution sen-
sor), engine speed signal or torque converter clutch solenoid valve circuit after cruise test?
Ye s o r N o
Yes >> Check damaged circuit. Refer to AT- 1 5 8 , "DTC P0740 TORQUE CONVERTER CLUTCH SOLE-
NOID VALVE" , AT- 11 6 , "DTC P0710 A/T FLUID TEMPERATURE SENSOR CIRCUIT" , AT- 1 2 2 ,
"DTC P0720 VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)" , AT- 1 2 7 , "DTC P0725
ENGINE SPEED SIGNAL" .— Euro-OBD
No >> GO TO 2.
2.CHECK ACCELERATOR PEDAL POSITION (APP) SENSOR
Check accelerator pedal position (APP) sensor. Refer to AT- 1 8 0 ,
"DTC P1705 ACCELERATOR PEDAL POSITION (APP) SENSOR"
— Euro-OBD
OK or NG
OK >> GO TO 3.
NG >> Repair or replace accelerator pedal position (APP) sen-
sor.
3.DETECT MALFUNCTIONING ITEM
1. Remove control valve. Refer to AT-413, "
Installation" .
2. Check the following items:
–Torque converter clutch control valve
–Torque converter relief valve
–Pilot valve
–Pilot filter
3. Disassemble A/T.
4. Check torque converter.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4.CHECK SYMPTOM
Check again.
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 connector.
PBIB0498E

AT-230
[EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
A/T Does Not Hold Lock-up Condition
ECS004T6
SYMPTOM:
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?
Ye s o r N o
Yes >> Check engine speed signal circuit. Refer to AT- 1 2 7 ,
"DTC P0725 ENGINE SPEED SIGNAL" (Euro-OBD).
No >> GO TO 2.
2. CHECK A/T FLUID CONDITION
1. Remove oil pan.
2. Check A/T fluid condition.
OK or NG
OK >> GO TO 3.
NG >> GO TO 5.
3. DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly. Refer to AT- 4 1 3 , "
Installation" .
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.
4. CHECK SYMPTOM
Check again.
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 connector.
SCIA0773E
SAT171B