2003 NISSAN X-TRAIL engine

AT-188
[EURO-OBD]
DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM
POWER SOURCE)

2. DETECT MALFUNCTIONING ITEM
Check the following items:

Harness for short or open between ignition switch and TCM connector terminal 10, 19.

Harness for short or open between battery and TCM connector terminal 28.

Fuse.

Ignition switch. Refer to PG-2, "POWER SUPPLY ROUTING" .
OK or NG
OK >> GO TO 9.
NG >> Repair or replace damaged parts.
3. CHECK INPUT SIGNAL OF A/T FLUID TEMPERATURE SENSOR
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”.
Without CONSULT-II
1. Start engine.
2. Check voltage TCM connector terminals while warming up A/T.
OK or NG
OK >> GO TO 9.
NG >> GO TO 4.
4. DETECT MALFUNCTIONING ITEM
Check the following items:

Harness for short or open between TCM, ECM and terminal cord assembly harness connector

Ground circuit for ECM
Refer to PG-2, "
POWER SUPPLY ROUTING" .
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
Monitor item Condition Display value
FLUID TEMP
SEWhen ATF temperature is 20°C (68°F). 1.5V
When ATF temperature is 80°C (176°F). 0.5V
LCIA0090E
Name Connec-
tor No. Terminal
No. (Wire
color) ConditionJudge-
ment stan-
dard
(Approx.)
A/T fluid
temperature
sensor F47 47 (BR) -
42 (B)When ATF temperature
is 20°C (68°F).1.5V
When ATF temperature
is 80°C (176°F).0.5V
SCIA2658E

AT-190
[EURO-OBD]
DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM
POWER SOURCE)

7. CHECK A/T FLUID TEMPERATURE SENSOR WITH TERMINAL CORD ASSEMBLY
1. Turn ignition switch OFF.
2. Disconnect terminal cord assembly harness connector in engine room.
3. Check resistance between terminal cord assembly harness con-
nector terminals when A/T is cold.
4. Reinstall any part removed.
OK or NG
OK >> GO TO 8.
NG >> Repair or replace damaged parts.
8. DETECT MALFUNCTIONING ITEM
1. Remove oil pan. Refer toAT- 4 0 4 , "
Control Valve Assembly and Accumulators" .
2. Check the following items:
–A/T fluid temperature sensor
 Check resistance between two terminals while changing temper-
ature as shown.
–Harness of terminal cord assembly for short or open
OK or NG
OK >> GO TO 9.
NG >> Repair or replace damaged parts.
9. CHECK DTC
Perform AT- 1 8 4 , "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 10.
10. CHECK TCM
1. Check TCM input/output signal. Refer to AT- 9 4 , "
TCM Terminals and Reference Value" .
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >>INSPECTION END
NG >> Repair or replace damaged parts.
Temperature °C (°F) Resistance
20 (68) Approx. 2.5 kΩ
80 (176) Approx. 0.3 kΩ
SCIA4948E
Temperature °C (°F) Resistance
20 (68) Approx. 2.5 kΩ
80 (176) Approx. 0.3 kΩ
SCIA5683E

DTC VEHICLE SPEED SENSOR MTR
AT-193
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT

2. Start engine and accelerate vehicle from 0 to 25 km/h (0 to 16
MPH).
3. If the check result is NG, go to AT- 1 9 6 , "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II”
WITHOUT CONSULT-II
1. Start engine.
2. Drive vehicle under the following conditions:
Selector lever in D and vehicle speed higher than 25 km/h (16
MPH).
3. Perform self-diagnosis.
Refer to AT- 5 2 , "
Diagnostic Procedure Without CONSULT-II" .
4. If the check result is NG, go to AT- 1 9 6 , "
Diagnostic Procedure" .
SCIA5358E
SCIA5592E

AT-196
[EURO-OBD]
DTC VEHICLE SPEED SENSOR MTR

TERMINALS AND REFERENCE VALUE MEASURED BETWEEN EACH TERMINAL
Diagnostic ProcedureECS004SO
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 connector and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2. DETECT MALFUNCTIONING ITEM
Check the following items:

Combination meters. Refer to DI-4, "COMBINATION METERS" .

Harness for short or open between TCM and combination meters.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
Termi-
nal No.Wire color Item ConditionJudgement stan-
dard
(Approx.)
40 L/WVehicle speed
sensorWhen moving vehicle at 2 to 3 km/h
(1 to 2 MPH) for 1 m (3 ft) or more.Voltage varies
between less
than 1V and
more than 4.5V
LCIA0090E
Name Connec-
tor No. Terminal
No. (Wire
color) ConditionJudge-
mentstan-
dard(Appro
x.)
Ve h ic le
speed sen-
sor F47 40 (L/W) -
GroundWhen moving vehicle at
2 to 3 km/h (1 to 2 MPH)
for 1 m (3 ft) or more.Voltage
varies
between
less than
0V and
more than
4.5V
SCIA3246E

AT-198
[EURO-OBD]
DTC CONTROL UNIT (RAM), CONTROL UNIT (ROM)

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 LogicECS00CUU
Possible CauseECS00CUV
TCM.
DTC Confirmation ProcedureECS00CUW
NOTE:
If “DTC Confirmation Procedure” 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.
4. If the check result is NG, go to AT- 1 9 9 , "
Diagnostic Procedure" .
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
SCIA5358E

AT-200
[EURO-OBD]
DTC CONTROL UNIT(EEPROM)

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 LogicECS00CUX
Possible CauseECS00CUY
TCM.
DTC Confirmation ProcedureECS00CUZ
NOTE:
If “DTC Confirmation Procedure” 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.
4. If the check result is NG, go to AT- 2 0 1 , "
Diagnostic Procedure" .
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
SCIA5358E

AT-204
[EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS

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. (Do not start engine.)
2. Check voltage between TCM connector terminals 10, 19, 28 and ground.
3. Turn ignition switch to OFF.
4. Check voltage between TCM connector 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 connector terminals 10, 19 and 28

Refer to AT- 3 9 5 , "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.
2. Disconnect TCM connector.
3. Check continuity between TCM connector 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 9 5 , "
Wiring Dia-
gram — AT — MAIN" .
3. CHECK COMBINATION METERS SYSTEM
Check combination meters system. Refer to DI-12, "
Combination Meter" .
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
SCIA4281E
Voltage: Battery voltage
Voltage: Battery voltage
SCIA0713E
Continuity should exist.
SCIA0766E

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-205
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT

4. CHECK SYMPTOM
Check again. Refer to AT- 7 1 , "
1. CHECK BEFORE ENGINE IS STARTED" .
OK or NG
OK >>INSPECTION END
NG >> 1. Perform TCM input/output signal inspection. Refer to AT- 9 4 , "
TCM Terminals and Reference
Va l u e" .
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.