2003 NISSAN X-TRAIL engine

DTC U1000 CAN COMMUNICATION LINE
AT-213
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
DTC U1000 CAN COMMUNICATION LINEPFP:31940
DescriptionECS004SD
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. MaDiag-
nosticny electonic control units are equipped onto a vehicle, and each control unit shares information and links
with oter control units during operation (not independent). In CAN communication, control units are connected
with 2 communication lines (CAN H line, CAN L line ) allowing a high rate of information transmission with
less wiring. Each control unit transmits/receives data but selectively reads required data only.
TCM TERMINALS AND REFERENCE VALUE
Remarks: Specification data are reference values.
*: This terminal is connected to the ECM.
On Board Diagnosis LogicECS004SE
**:A/T COMMLINE means DTE U1000 CAN communication line.
ECS004SF
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch “ON”.
2. Select “DATA MONITOR” mode for “ENGINE” with CONSULT-II.
3. Wait at least 6 seconds or start engine and wait for at least 6
seconds.
WITHOUT CONSULT-II
1. Turn ignition switch “ON”.
2. Wait at least 6 seconds or start engine and wait at least 6 sec-
onds.
3. Perform self-diagnosis.
Refer toAT- 5 1 , "
TCM SELF-DIAGNOSTIC PROCEDURE (NO
TOOLS)".
Te r m i -
nal No.Wire color Item ConditionJudgement
standard
(Approx.)
5 B/W CAN(high) — — —
6 L/R CAN(low) — — —
Diagnostic trouble code Malfunction is detected when... Check items (Possible cause)
:A/T COMM LINE**
The ECM-AT communication line is open
or shorted.
lHarness or connectors
(The solenoid circuit is open or shorted.)
lOverrun clutch solenoid valve :Judgement flicker
SAT014K
SCIA0705E

DTC U1000 CAN COMMUNICATION LINE
AT-215
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
Diagnostic ProcedureECS004SH
1.CHECK CAN COMMUNICATION CIRCUIT
With CONSULT-II
1. Turn ignition switch to “ON” position. (Do not start engine.)
2. Select “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. The “CAN COMM CIRCUIT” is detected.
Ye s o r N o ?
Yes >> Print out CONSULT-II screen, GO TO 2.
No >> INSPECTION END
2.CHECK CAN COMMUNICATION SIGNALS
With CONSULT-II
1. Turn ignition switch to “ON” position. (Do not start engine.)
2. Select “CAN COMM SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.
>> Print out CONSULT-II screen, go toLAN-5, "
CAN SYSTEM (FOR A/T MODELS)".
CAN Communication Signals
PCIA0061E
Normal conditions Abnormal conditions (examples)
CAN COMM : OK CAN COMM : OK
CANCIRC1:OK CANCIRC1:UNKWN
CANCIRC2:OK CANCIRC2:UNKWN
CANCIRC3:OK CANCIRC3:UNKWN
CANCIRC4:OK CANCIRC4:UNKWN
CANCIRC5:UNKWN CANCIRC5:UNKWN

DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM
POWER SOURCE)
AT-217
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
ON BOARD DIAGNOSIS LOGIC
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE
After the repair, perform the following procedure to confirm the malfunction is eliminated.
With CONSULT-II
1. Start engine.
2. Select “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Drive vehicle under the following conditions:
Selector lever in “D”, vehicle speed higher than 20 km/h (12
MPH).
Without CONSULT-II
1. Start engine.
2. Drive vehicle under the following conditions:
Selector lever in “D”, vehicle speed higher than 20 km/h (12
MPH).
3. Perform self-diagnosis.
Refer to TCM SELF-DIAGNOSTIC PROCEDURE (No Tools),
AT-51, "
TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)".
Diagnostic trouble code Malfunction is detected when ... Check items (Possible cause)
: BATT/FLUID TEMP SEN
TCM receives an excessively low or high
voltage from the sensor.
lHarness or connectors
(The sensor circuit is open or shorted.)
lA/T fluid temperature sensor
: 8th judgement flicker
SAT014K
SAT971J
SCIA0738E

DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM
POWER SOURCE)
AT-219
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
Diagnostic ProcedureECS004SK
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:
lHarness for short or open between ignition switch and
TCM (Main harness)
lIgnition switch and fuse
Refer toPG-2, "
POWER SUPPLY ROUTING".
2.CHECK A/T FLUID TEMPERATURE SENSOR WITH TERMINAL CORD ASSEMBLY
1. Turn ignition switch to “OFF” position.
2. Disconnect terminal cord assembly connector in engine compartment.
3. Check resistance between terminals 6 and 7 when A/T is cold.
4. Reinstall any part removed.
OK or NG
OK (With CONSULT-II)>>GOTO3
OK (Without CONSULT-II)>>GOTO4
NG >> 1. Remove oil pan.
2. Check the following items:
–A/T fluid temperature sensor
Refer to “Component Inspection”,AT-221, "
Component Inspection".
–Harness of terminal cord assembly for short or open Voltage:Batteryvoltage
Voltage:Batteryvoltage
SCIA0736E
Resistance
:Cold [20°C(68°F)]
Approximately 2.5 kW
SCIA0737E

AT-220
[EURO-OBD]
DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM
POWER SOURCE)
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:
lHarness for short or open between TCM, ECM and
terminal cord assembly (Main harness)
lGround circuit for ECM
Refer to EC-´´, “TROUBLE DIAGNOSIS FOR
POWER SUPPLY”.
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:
lHarness for short or open between TCM, ECM and
terminal cord assembly (Main harness)
lGround circuit for ECM
Refer to EC-´´, “TROUBLE DIAGNOSIS FOR
POWER SUPPLY”. Vo l ta g e :
Cold [20°C(68°F)]®Hot [80°C(176°F)]
Approximately 1.5V®0.5V
SAT614J
Vo l ta g e :
Cold [20°C(68°F)]®Hot [80°C(176°F)]
Approximately 1.5V®0.5V
SCIA0738E
Continuity should exist.
SCIA0739E

DTC VEHICLE SPEED SENSOR MTR
AT-223
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE
CAUTION:
lAlways drive vehicle at a safe speed.
lIf conducting this “DTC CONFIRMATION PROCEDURE”
again, always turn ignition switch “OFF” and wait at least 5
seconds before continuing.
After the repair, perform the following procedure to confirm the mal-
function is eliminated.
With CONSULT-II
1. Turn ignition switch “ON” and select “DATA MONITOR” mode for
“A/T” with CONSULT-II.
2. Start engine and accelerate vehicle from 0 to 25 km/h (0 to 16
MPH).
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 TCM SELF-DIAGNOSTIC PROCEDURE (No Tools),AT-51, "
TCM SELF-DIAGNOSTIC PROCE-
DURE (NO TOOLS)".
SAT014K
SAT971J
SCIA0696E

DTC VEHICLE SPEED SENSOR MTR
AT-225
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
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.
Wi th ou t C O N S U LT-I I
1. Start engine.
2. Check voltage between TCM terminal 40 and ground while driv-
ingat2to3km/h(1to2MPH)for1m(3ft)ormore.
OK or NG
OK >> GO TO 2
NG >> Check the following items:
lVehicle speed sensor and ground circuit for vehicle
speed sensor
Refer to DI-´´, “METERS AND GAUGES”.
lHarness for short or open between TCM and vehicle
speed sensor (Main harness)
2.CHECK DTC
Perform Diagnostic Trouble Code (DTC) confirmation procedure,AT-223, "
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
Vo l ta g e
:Voltage varies between less than 1V and
more than 4.5V.
SCIA0717E

AT-226
[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 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 No. Malfunction is detected when .... Check Item (Possible Cause)
: CONTROL UNIT (RAM),
CONTROL UNIT (ROM)TCM memory (RAM) or (ROM) is malfunc-
tioning.
lTCM
SAT014K
SAT971J