2003 NISSAN X-TRAIL ECU

ACC-2
ACCELERATOR CONTROL SYSTEM

ACCELERATOR CONTROL SYSTEMPFP:18005
Removal and InstallationEBS00KP5
REMOVAL
1. Disconnect accelerator pedal position sensor harness connector.
2. Loosen nuts, and remove accelerator pedal assembly.
CAUTION:

Do not disassemble accelerator pedal assembly. Do not remove accelerator pedal position sen-
sor from accelerator pedal assembly.

Avoid impact from dropping etc. during handling.

Be careful to keep accelerator pedal assembly away from water.

Do not adjust adjusting screw (painted white).
INSTALLATION
Install in the reverse order of removal.
INSPECTION AFTER INSTALLATION

Make sure that accelerator pedal moves smoothly within the whole operation range.

Make sure that accelerator pedal securely returns to the original position.

For the electrical inspection of accelerator pedal position sensor, refer to EC-386, "DTC P2122, P2123
APP SENSOR" , EC-393, "DTC P2127, P2128 APP SENSOR" , EC-409, "DTC P2138 APP SENSOR"
[QR (WITH EURO-OBD)], EC-740, "DTC P2122, P2123 APP SENSOR" , EC-747, "DTC P2127, P2128
APP SENSOR" , EC-763, "DTC P2138 APP SENSOR" [QR (WITHOUT EURO-OBD)] or EC-987, "DTC
P0122, P0123 APP SENSOR" , EC-1025, "DTC P0222, P0223 APP SENSOR" , EC-1149, "DTC P2135
APP SENSOR" [YD (WITH EURO-OBD)], EC-1297, "DTC P0122, P0123 APP SENSOR" , EC-1332,
"DTC P0222, P0223 APP SENSOR" , EC-1437, "DTC P2135 APP SENSOR" [YD (WITHOUT EURO-
OBD)].
CAUTION:
When the harness connector of the accelerator pedal position sensor is disconnected, perform
“Accelerator Pedal Released Position Learning”. (QR20DE and QR25DE) Refer to EC-45, "
Acceler-
ator Pedal Released Position Learning" (WITH EURO-OBD) or EC-507, "Accelerator Pedal
Released Position Learning" (WITHOUT EURO-OBD).
NOTE:
In the case of YD22DDTi, it is unnecessary to perform “Accelerator Pedal Released Position Learning”
even when disconnecting the harness connector of the accelerator pedal position sensor.
1. Accelerator pedal assembly
PBIC2412E

CLUTCH MASTER CYLINDER
CL-9
D
E
F
G
H
I
J
K
L
MA
B
CL


Drain clutch fluid from reservoir tank and remove hose.

Remove hose from nipple. Immediately plug hose and reservoir tank to prevent clutch fluid from drip-
ping.
CAUTION:
Do not spill clutch fluid onto painted surfaces. If it spills, wipe up immediately and wash the
affected area with water.
2. Using a flare nut torque wrench, remove clutch tube.
3. Remove snap pin and clevis pin on clevis in passenger compartment to separate clutch pedal.
4. First remove mounting nuts on master cylinder assembly, and then master cylinder assembly from vehi-
cle.
INSTALLATION
1. Connect clutch tube to master cylinder assembly and temporarily tighten flare nut.
2. Install master cylinder assembly and tighten mounting nut to the specified torque. Refer to CL-8,
"Removal and Installation" .
3. Using a flare nut torque wrench, tighten clutch tube flare nut to the specified torque. Refer to CL-11,
"Removal and Installation" .
4. Attach clevis of clevis pin to clutch pedal.
5. Attach snap pin to clevis pin.
6. Install hose to nipple.
7. After completing this procedure, inspect and adjust pedal height and then bleed clutch tube. Refer to CL-
5, "On-Vehicle Inspection and Adjustment" , CL-7, "Air Bleeding Procedure"
Disassembly and AssemblyECS008BB
DISASSEMBLY
1. Remove spring pin, nipple and seal from cylinder body using a
pin punch.
2. Loosen push rod lock nut. Remove clevis and lock nut.
3. Remove seat.
4. Remove stopper ring and stopper. Remove push rod from cylin-
der body while holding it securely to reduce possibility of the pis-
ton popping out.
5. Remove piston assembly and return spring.
INSPECTION AFTER DISASSEMBLY
Check for any of the conditions shown below. If any malfunction is found, replace the part concerned.

Damaged cylinder internal wall, foreign matter, wear, corrosion, or pinhole

Damaged or deformed nipple or reservoir tank

Settling of spring

Cracked or deformed seat
ASSEMBLY
1. Apply rubber lubricant to internal surface of cylinder body, sliding surface of piston assembly, and piston
cup. Insert piston assembly and return spring.
2. Apply silicon grease to push rod and install stopper. Install stopper ring while holding down push rod by
hand to prevent piston assembly from popping out.
3. Install seat.
4. Install clevis to push rod and tighten lock nut to the specified torque. Refer to CL-8, "
Removal and Installa-
tion" .
5. Install seal and nipple to cylinder body. Install spring pin, using a pin punch.
PCIB0274E

CONTROL LINKAGE
MT-15
D
E
F
G
H
I
J
K
L
MA
B
MT

Removal and InstallationECS00CY6
CAUTION:

Keep in mind that the select side lock plate for securing control cable is different from the one on
the shift side.

After assembly, make sure selector lever automatically returns to Neutral when it is moved to 1st,
2nd, or Reverse.

Shift control lever to the neutral position for removal.
Install select cable according to the following procedure.
1. Install select cable of transaxle side to control assembly.
2. Install select cable to pin on select lever part of control device
assembly.
3. Push lock part (A) of select cable all the way to the direction of
the arrow. (6 M/T model only)
4. Slide stopper part (B) all the way to lock part (A) as shown by
the arrow. (6 M/T model only)
CAUTION:
Make sure that select cable and select lever are installed
securely.
PCIB0815E
PCIB0817E

MT-18
TRANSAXLE ASSEMBLY

14. Remove bolts securing transaxle to engine.
15. Remove transaxle from vehicle.
INSTALLATION
Paying attention to the following items, install in the reverse order of removal.

When installing transaxle to engine, tighten bolts to the specified torque.
CAUTION:
When installing transaxle, be careful not to bring transaxle input shaft into contact with clutch
cover.
QR engine model:
YD engine model:

After installation, check oil level, and check for leaks and loose
mechanisms. Refer to MT-11, "
Checking M/T Oil" .
MTD0062D
Bolt No. 1 2 3 4 5 6
Quantity 2 1 1 2 2 2
“ ” mm (in)40
(1.57)75
(2.95)45
(1.77)40
(1.57)30
(1.18)40
(1.57)
Tightening torque
N·m (kg - m, ft- lb)74.5
(7.6, 55)42.7
(4.4, 31)35.3
(3.6, 26 )
SCIA0353E
Bolt No. 1 2 3 4 5 6
Quantity 2 2 1 1 3 1
“ ” mm (in)55
(2.17)50
(2.76)120
(4.72)45
(1.77)40
(1.57)35
(1.38)
Tightening torque
N·m (kg - m, ft- lb)44
(4.5, 32)33.5
(3.4, 25)
SCIA0748E

MT-36
TRANSAXLE ASSEMBLY

d. With snap ring of mainshaft rear bearing temporarily installed,
place transaxle case over clutch housing.
e. Through bore plug mounting hole, with snap ring stretched, and
lift up mainshaft assembly from the control assembly mounting
hole.
f. Securely install snap ring onto mainshaft rear bearing.
g. Tighten mounting bolts to the specified torque.
CAUTION:
Always replace bolts B as they are self-sealing bolts.
h. Install control assembly to transaxle case.
CAUTION:
Do not reuse O-ring.
i. Install a new shift check to transaxle case, and then tighten shift check to the specified torque. Refer to
MT-22, "
SHIFT CONTROL COMPONENTS" .
CAUTION:
Do not reuse shift check.
j. Install a new stopper bolt to transaxle case, and then tighten stopper bolt to the specified torque. Refer to
MT-22, "
SHIFT CONTROL COMPONENTS" .
CAUTION:
Do not reuse stopper bolt.
SCIA0892E
SCIA0893E
Bolt A:
: 52 N·m (5.3 kg-m, 38 ft-lb)
Bolt B:
: 65 N·m (6.6 kg-m, 48 ft-lb)
SCIA1064E

TRANSAXLE ASSEMBLY
MT-45
D
E
F
G
H
I
J
K
L
MA
B
MT

31. Install baffle plate and oil gutter to transaxle case.
32. Install transaxle case following the procedures below.
a. Install selected mainshaft rear bearing adjusting shim into transaxle case.

For selection of adjusting shims, refer toMT-51, "MAINSHAFT END PLAY" .
b. Temporarily install a new snap ring of mainshaft rear bearing into transaxle case.
CAUTION:
Do not reuse snap ring.
c. Apply recommended sealant to mating surfaces of transaxle
case and clutch housing.
CAUTION:
Remove old sealant adhering to mounting surfaces. Also
remove any moisture, oil, or foreign material adhering to
application and mounting surfaces.
d. With snap ring of mainshaft rear bearing temporarily installed,
place transaxle case over clutch housing.
e. Through bore plug mounting hole, with snap ring stretched, and
lift up mainshaft assembly from the control assembly mounting
hole.
f. Securely install snap ring onto mainshaft rear bearing.
PCIB0816E
SCIA0892E
SCIA0893E

AT-8
PRECAUTIONS

PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
ECS004Q0
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
WARNING:

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions for On Board Diagnostic (EURO-OBD) System of A/T and Engine —
Euro-OBD —
ECS004Q1
The ECM has an on board diagnostic system. It will light up the malfunction indicator lamp (MIL) to warn the
driver of a malfunction causing emission deterioration.
CAUTION:

Be sure to turn the ignition switch “OFF” and disconnect the negative battery terminal before any
repair or inspection work. The open/short circuit of related switches, sensors, solenoid valves,
etc. will cause the MIL to light up.

Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MIL to light up due to an open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)

Be sure to route and secure the harnesses properly after work. Interference of the harness with a
bracket, etc. may cause the MIL to light up due to a short circuit.

Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MIL to light up due to a malfunction of the EGR system or fuel injection system, etc.

Be sure to erase the unnecessary malfunction information (repairs completed) from the TCM and
ECM before returning the vehicle to the customer.
Precautions for Trouble DiagnosisECS004VN
CAN SYSTEM

Do not apply voltage of 7.0V or higher to the measurement terminals.

Use the tester with its open terminal voltage being 7.0V or less.
Precautions for Harness RepairECS004VO
CAN SYSTEM

Solder the repaired parts, and wrap with tape. [Frays of twisted
line must be within 110 mm (4.33 in)]
PKIA0306E

DTC P0705 PARK/NEUTRAL POSITION (PNP) SWITCH
AT-101
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT

2. Select “DATA MONITOR” mode for “ENGINE” with CONSULT-II.
3. Start engine and maintain the following conditions for at least 5
consecutive seconds.
VHCL SPEED SE: 10 km/h (6 MPH) or more
THRTL POS SEN: More than 1.3V
Selector lever: D position (OD ON or OFF)
4. If the check result is NG, go to AT- 1 0 3 , "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II”.
SCIA5682E