2001 NISSAN X-TRAIL ignition

AT-190
[EURO-OBD]
DTC U1000 CAN COMMUNICATION LINE
DTC U1000 CAN COMMUNICATION LINE
PFP:31940
DescriptionECS008CZ
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. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
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.
On Board Diagnosis LogicECS008D0
DTC Confirmation ProcedureECS008D1
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 to AT- 5 1 , "
TCM SELF-DIAGNOSTIC PROCEDURE (NO
TOOLS)" .
Termi-
nal No.Wire color Item ConditionJudgement
standard
(Approx.)
5QR20DE: B/W
QR25DE: W/BCAN-H (high) — —
6 L/R CAN-L (low) — —
Diagnostic trouble code Malfunction is detected when... Check items (Possible cause)
:CAN COMM CIRCUIT
When a malfunction is detected in CAN
communication line.
●Harness or connectors
(CAN communication line is open or
shorted.) :11th judgement flicker
SAT014K
SCIA0705E

AT-192
[EURO-OBD]
DTC U1000 CAN COMMUNICATION LINE
Diagnostic Procedure
ECS008D3
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.
Yes or No?
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 to LAN-5, "
CAN SYSTEM (FOR A/T MODELS)" .
CAN Communication Signals
PCIA0061E
Normal conditions Abnormal conditions (examples)
CAN COMM: OK CAN COMM: OK
CAN CIRC 1: OK CAN CIRC 1: UNKWN
CAN CIRC 2: OK CAN CIRC 2: UNKWN
CAN CIRC 3: OK CAN CIRC 3: UNKWN
CAN CIRC 4: OK CAN CIRC 4: UNKWN
CAN CIRC 5: UNKWN CAN CIRC 5: UNKWN

DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM
POWER SOURCE)
AT-193
[EURO-OBD]
D
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H
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L
MA
B
AT
DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM
POWER SOURCE)
PFP:31940
DescriptionECS004SI
The A/T fluid temperature sensor detects the A/T fluid temperature
and sends a signal to the TCM.
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Remarks: Specification data are reference values.
TCM TERMINALS AND REFERENCE VALUE
Remarks: Specification data are reference values.
SCIA0735E
SAT021J
Monitor item Condition Specification (Approximately)
A/T fluid temperature sensorCold [20°C (68°F)]
↓
Hot [80°C (176°F)]1.5V
↓
0.5V2.5 kΩ
↓
0.3 kΩ
Te r m i -
nal No.Wire color Item ConditionJudgement stan-
dard
(Approx.)
10 BR/W Power sourceWhen turning ignition switch to “ON”. Battery voltage
When turning ignition switch to
“OFF”.0V
19 BR/R Power source Same as No. 10
28 R/BPower source
(Memory back-up)or When turning ignition switch to
“OFF”.Battery voltage
When turning ignition switch to “ON”. Battery voltage
42 BGround
(A/T fluid temper-
ature sensor)———
47 BRA/T fluid tempera-
ture sensorWhen ATF temperature is 20°C
(68°F).1.5V
When ATF temperature is 80°C
(176°F).0.5V

AT-196
[EURO-OBD]
DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM
POWER SOURCE)
Diagnostic Procedure
ECS004SK
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
●Ignition switch and fuse
Refer to PG-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)>>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 AT-198, "
Component Inspection" .
–Harness of terminal cord assembly for short or open Voltage: Battery voltage
Voltage: Battery voltage
SCIA0736E
Resistance: Cold [20°C (68°F)]
Approximately 2.5 kΩ
SCIA0737E

DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM
POWER SOURCE)
AT-197
[EURO-OBD]
D
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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-200
[EURO-OBD]
DTC VEHICLE SPEED SENSOR MTR
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE
CAUTION:
●Always drive vehicle at a safe speed.
●If 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- 5 1 , "
TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)"
.
SAT014K
SAT971J
SCIA0696E

DTC CONTROL UNIT (RAM), CONTROL UNIT (ROM)
AT-203
[EURO-OBD]
D
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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
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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