2005 NISSAN X-TRAIL Service Repair Manual

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NISSAN X-TRAIL 2005 Service Repair Manual ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
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A sample of CONSULT-II display for DTC is shown in the following
page. DTC or 1st trip DTC of a malfunction is displ

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
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A sample of CONSULT-II display for DTC is shown in the following
page. DTC or 1st trip DTC of a malfunction is displayed in SELF
DIAGNOSIS mode for “ENGINE” with CONSULT-II. Time data indi-
cates how many times the vehicle was driven after the last detection
of a DTC.
If the DTC is being detected currently, the time data will be “0”.
If a 1st trip DTC is stored in the ECM, the time data will be “1t”.
Freeze Frame Data and 1st Trip Freeze Frame Data
The ECM has a memory function, which stores the driving condition such as fuel system status, calculated
load value, engine coolant temperature, short term fuel trim, long term fuel trim, engine speed and vehicle
speed at the moment the ECM detects a malfunction.
Data which are stored in the ECM memory, along with the 1st trip DTC, are called 1st trip freeze frame data,
and the data, stored together with the DTC data, are called freeze frame data and displayed on CONSULT-II
or GST. The 1st trip freeze frame data can only be displayed on the CONSULT-II screen, not on the GST. For
detail, refer to EC-103, "
CONSULT-II Function (ENGINE)" .
Only one set of freeze frame data (either 1st trip freeze frame data of freeze frame data) can be stored in the
ECM. 1st trip freeze frame data is stored in the ECM memory along with the 1st trip DTC. There is no priority
for 1st trip freeze frame data and it is updated each time a different 1st trip DTC is detected. However, once
freeze frame data (2nd trip detection/MI on) is stored in the ECM memory, 1st trip freeze frame data is no
longer stored. Remember, only one set of freeze frame data can be stored in the ECM.
The ECM has the following priorities to update the data.
Both 1st trip freeze frame data and freeze frame data (along with the DTCs) are cleared when the ECM mem-
ory is erased.
SAT014K
SAT015K
SAT016K
Priority Items
1
Freeze frame dataMisfire — DTC: P0300 - P0306
Fuel Injection System Function — DTC: P0171, P0172, P0174, P0175
2 Except the above items (Includes A/T related items)
3 1st trip freeze frame data

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NISSAN X-TRAIL 2005 Service Repair Manual AT-42
[EURO-OBD]
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

HOW TO ERASE DTC
The diagnostic trouble code can be erased by CONSULT-II, GST or ECM DIAGNOSTIC TEST MODE as
described following.
If the batt

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7. Touch “ERASE”. (The DTC in the ECM will be erased.)
HOW TO ERASE DTC (WITH GST)
1. If the ignition switch st

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[EURO-OBD]
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

Malfunction Indicator (MI)ECS004QL
1. The malfunction indicator will light up when the ignition switch is
turned ON without the engine running

AT-44
[EURO-OBD]
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

Malfunction Indicator (MI)ECS004QL
1. The malfunction indicator will light up when the ignition switch is
turned ON without the engine running. This is for checking the
lamp.
If the malfunction indicator does not light up, refer to DI-35,
"Schematic" .
(Or see MI & CONSULT-II in EC section. Refer to EC-64,
"Malfunction Indicator (MI)" (WITH EURO-OBD) or EC-568,
"Malfunction Indicator (MI)" (WITHOUT EURO-OBD) or EC-
103, "CONSULT-II Function (ENGINE)" (WITH EURO-OBD)
or EC-604, "
CONSULT-II Function (ENGINE)" (WITHOUT
EURO-OBD).
2. When the engine is started, the malfunction indicator should go
off.
If the lamp remains on, the on board diagnostic system has detected an emission-related (EURO-OBD)
malfunction. For detail, refer to EC-52, "
ON BOARD DIAGNOSTIC (OBD) SYSTEM" .
CONSULT-IIECS004QM
After performing “SELF-DIAGNOSTIC PROCEDURE (WITH CONSULT-II)” AT- 4 5 , place check marks for
results on the “DIAGNOSTIC WORKSHEET”, AT- 5 8
. Reference pages are provided following the items.
NOTICE:
1. The CONSULT-II electrically displays shift timing and lock-up timing (that is, operation timing of each sole-
noid).
Check for time difference between actual shift timing and the CONSULT-II display. If the difference is
noticeable, mechanical parts (except solenoids, sensors, etc.) may be malfunctioning. Check mechanical
parts using applicable diagnostic procedures.
2. Shift schedule (which implies gear position) displayed on CONSULT-II and that indicated in Service Man-
ual may differ slightly. This occurs because of the following reasons:
–Actual shift schedule has more or less tolerance or allowance,
–Shift schedule indicated in Service Manual refers to the point where shifts start, and
–Gear position displayed on CONSULT-II indicates the point where shifts are completed.
3. Shift solenoid valve “A” or “B” is displayed on CONSULT-II at the start of shifting. Gear position is dis-
played upon completion of shifting (which is computed by TCM).
4. Additional CONSULT-II information can be found in the Operation Manual supplied with the CONSULT-II
unit.
FUNCTION
SAT652J
Diagnostic test mode Function Reference page
Work supportThis mode enables a technician to adjust some devices faster and more accurately by
following the indications on CONSULT-II.—
Self-diagnostic results Self-diagnostic results can be read and erased quickly.AT- 4 5
Data monitor Input/Output data in the ECM can be read.AT- 4 6
CAN diagnostic support
monitorThe results of transmit/receive diagnosis of CAN communication can be read. —
Function testConducted by CONSULT-II instead of a technician to determine whether each system
is “OK” or “NG”.—
DTC work support Select the operating condition to confirm Diagnosis Trouble Codes.AT- 4 7
TCM part number TCM part number can be read. —

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SELF-DIAGNOSTIC PROCEDURE (WITH CONSULT-II)
1. Turn on CONSULT-II and touch “ENGINE” for EURO-OBD
detected item

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SELF-DIAGNOSTIC PROCEDURE (WITH CONSULT-II)
1. Turn on CONSULT-II and touch “ENGINE” for EURO-OBD
detected items or touch “A/T” for TCM self-diagnosis.
If A/T is not displayed, check TCM power supply and ground cir-
cuit. Refer to AT- 9 4 , "
TCM Terminals and Reference Value" . If
result is NG, refer to PG-2, "
POWER SUPPLY ROUTING" .
2. Touch “SELF DIAGNOSIS”.
Display shows malfunction experienced since the last erasing
operation.
CONSULT-II performs “real time diagnosis”.
Also, any malfunction detected while in this mode will be dis-
played at real time.
SELF-DIAGNOSTIC RESULT TEST MODE
SAT014K
SAT987J
Items (CONSULT-II screen terms) Malfunction is detected when... EURO-OBD (DTC)
CAN COMM CIRCUIT
Malfunction is detected in CAN communication line. U1000
VHCL SPEED SEN·A/T
TCM does not receive the proper voltage signal from the sensor.P0720
VHCL SPEED SEN·MTR—
THROTTLE POSI SEN
TCM receives an excessively low or high voltage from this sensor P1705
SHIFT SOLENOID/V A
TCM detects an improper voltage drop when it tries to operate the sole-
noid valve.P0750
SHIFT SOLENOID/V B
TCM detects an improper voltage drop when it tries to operate the sole-
noid valve.P0755
OVERRUN CLUTCH S/V
TCM detects an improper voltage drop when it tries to operate the sole-
noid valve.P1760
T/C CLUTCH SOL/V
TCM detects an improper voltage drop when it tries to operate the sole-
noid valve.P0740
ATF TEMP SEN/CIRC
TCM receives an excessively low or high voltage from the sensor.P0710
BATT/FLUID TEMP SEN—
ENGINE SPEED SIG
TCM does not receive the proper voltage signal from the ECM. P0725
A/T 1ST GR FNCTN
A/T cannot be shifted to the 1st gear position even if electrical circuit is
good.P0731*1
A/T 2ND GR FNCTN
A/T cannot be shifted to the 2nd gear position even if electrical circuit is
good.P0732*1
A/T 3RD GR FNCTN
A/T cannot be shifted to the 3rd gear position even if electrical circuit is
good.P0733*1
A/T 4TH GR FNCTN
A/T cannot be shifted to the 4th gear position even if electrical circuit is
good.P0734*1
LINE PRESSURE S/V
TCM detects an improper voltage drop when it tries to operate the sole-
noid valve.P0745
CONTROL UNIT (RAM)
TCM memory (RAM) is malfunctioning —
CONTROL UNIT (ROM)
TCM memory (ROM) is malfunctioning —

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NISSAN X-TRAIL 2005 Service Repair Manual AT-46
[EURO-OBD]
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

*1: These malfunctions cannot be displayed by MI if another malfunction is assigned to lamp MI.
DATA MONITOR MODE (A/T)
X: Standard, —: Not

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DTC WORK SUPPORT MODE WITH CONSULT-II
For details, refer to the separate “CONSULT-II Operations Manual”.
CONSUL

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NISSAN X-TRAIL 2005 Service Repair Manual AT-48
[EURO-OBD]
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

3. Turn ignition switch “ON”. (Do not start engine.)
4. Touch “START (NISSAN BASED VHCL)”.
5. Touch “A/T”.
If “A/T” is not in

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