NISSAN X-TRAIL 2001 Service Owner's Guide

SERVICE INFORMATION FOR ELECTRICAL INCIDENT
GI-29
C
D
E
F
G
H
I
J
K
L
MB
GI
If repairs are needed always use wire that is of the same or larger gauge.
MEASURING VOLTAGE DROP — ACCUMULATED METHOD
●Connect the DMM across the connector or part of the circuit you want to check. The positive lead of the
DMM should be closer to power and the negative lead closer to ground.
●Operate the circuit.
●The DMM will indicate how many volts are being used to “push” current through that part of the circuit.
Note in the illustration that there is an excessive 4.1 volt drop between the battery and the bulb.
MEASURING VOLTAGE DROP — STEP-BY-STEP
The step-by-step method is most useful for isolating excessive drops in low voltage systems (such as those in
“Computer Controlled Systems”).
Circuits in the “Computer Controlled System” operate on very low amperage.
The (Computer Controlled) system operations can be adversely affected by any variation in resistance in the
system. Such resistance variation may be caused by poor connection, improper installation, improper wire
gauge or corrosion.
The step by step voltage drop test can identify a component or wire with too much resistance.
SGI974
SAIA0258E

GI-30
SERVICE INFORMATION FOR ELECTRICAL INCIDENT
Control Unit Circuit Test
System Description:When the switch is ON, the control unit lights up the lamp.
INPUT-OUTPUT VOLTAGE CHART
The voltage value is based on the body ground.
*:If high resistance exists in the switch side circuit (caused by a single strand), terminal 1 does not detect battery voltage. Control unit
does not detect the switch is ON even if the switch does not turn ON. Therefore, the control unit does not supply power to light up the
lamp.
INPUT-OUTPUT VOLTAGE CHART
The voltage value is based on the body ground.
*:If high resistance exists in the switch side circuit (caused by a single strand), terminal 2 does not detect approx. 0V. Control unit does
not detect the switch is ON even if the switch does not turn ON. Therefore, the control unit does not control ground to light up the lamp.
MGI034A
Pin
No.Item ConditionVoltage
value [V]In case of high resistance such as single strand [V] *
1 SwitchSwitch ON Battery voltage Lower than battery voltage Approx. 8 (Example)
Switch OFF Approx. 0 Approx. 0
2LampSwitch ON Battery voltage Approx. 0 (Inoperative lamp)
Switch OFF Approx. 0 Approx. 0
MGI035A
Pin
No.Item ConditionVo l ta g e
value [V]In case of high resistance such as single strand [V] *
1LampSwitch ON Approx. 0 Battery voltage (Inoperative lamp)
Switch OFF Battery voltage Battery voltage
2 SwitchSwitch ON Approx. 0 Higher than 0 Approx. 4 (Example)
Switch OFF Approx. 5 Approx. 5

SERVICE INFORMATION FOR ELECTRICAL INCIDENT
GI-31
C
D
E
F
G
H
I
J
K
L
MB
GI
Control Units and Electrical PartsEAS000PC
PRECAUTIONS
●Never reverse polarity of battery terminals.
●Install only parts specified for a vehicle.
●Before replacing the control unit, check the input and output and
functions of the component parts.
●Do not apply excessive force when disconnecting a connector.
●If a connector is installed by tightening bolts, loosen bolt mount-
ing it, then take it out by hand.
●Before installing a connector, make sure the terminal is not bent
or damaged, and then correctly connect it.
When installing a connector by tightening bolts, fix it by tighten-
ing the mounting bolt until the painted projection of the connec-
tor becomes even with the surface.
●For removal of the lever type connector, pull the lever up to the
direction pointed to by the arrow A in the figure, and then
remove the connector.
●For installation of the lever type connector, pull down the lever to
the direction pointed by the arrow B in the figure, and then push
the connector until a clicking noise is heard.
SAIA0251E
SAIA0252E
SAIA0253E
SAIA0254E

GI-32
SERVICE INFORMATION FOR ELECTRICAL INCIDENT
●Do not apply excessive shock to the control unit by dropping or
hitting it.
●Be careful to prevent condensation in the control unit due to
rapid temperature changes and do not let water or rain get on it.
If water is found in the control unit, dry it fully and then install it in
the vehicle.
●Be careful not to let oil to get on the control unit connector.
●Avoid cleaning the control unit with volatile oil.
●Do not disassemble the control unit, and do not remove the
upper and lower covers.
●When using a DMM, be careful not to let test probes get close to
each other to prevent the power transistor in the control unit
from damaging battery voltage because of short circuiting.
●When checking input and output signals of the control unit, use
the specified check adapter.
SAIA0255E
SEF348N

CONSULT-II CHECKING SYSTEM
GI-33
C
D
E
F
G
H
I
J
K
L
MB
GI
CONSULT-II CHECKING SYSTEMPFP:00000
DescriptionEAS000G8
●CONSULT-II is a hand-held type tester. When it is connected with a diagnostic connector equipped on the
vehicle side, it will communicate with the control unit equipped in the vehicle and then enable various
kinds of diagnostic tests.
●Refer to “CONSULT-II Software Operation Manual” for more information.
Function and System Application EAS000G9
x:Applicable
*1: Nissan Anti-Theft System
Nickel Metal Hydride Battery Replacement EAS000GA
CONSULT-II contains a nickel metal hydride battery. When replacing the battery obey the following:
WARNING:
Replace the nickel metal hydride battery with Genuine CONSULT-II battery only. Use of another bat-
tery may present a risk of fire or explosion. The battery may present a fire or chemical burn hazard if
mistreated. Do not recharge, disassemble or dispose of in fire.
Keep the battery out of reach of children and discard used battery conforming to the local regulations.
Diagnostic test
modeFunction
ENGINE
A/T
AIR BAG
ABS
ABS (Including ESP)
ALL MODE 4WD
NATS*1
Work supportThis mode enables a technician to adjust some devices faster and more accu-
rately by following the indications on CONSULT-II.x- -- x- -
Self-diagnostic
resultsSelf-diagnostic results can be read and erased quickly. x x x x x x x
Trouble diagnos-
tic recordCurrent self-diagnostic results and all trouble diagnostic records previously
stored can be read.--x----
Data monitor Input/Output data in the ECM can be read. x x - x x x -
Active testDiagnostic Test Mode in which CONSULT-II drives some actuators apart from the
ECMs and also shifts some parameters in a specified range.x- -xx- -
DTC confirmationThe results of SRT (System Readiness Test) and the self-diagnosis status/result
can be confirmed.x------
DTC work sup-
portSelect the operating condition to confirm Diagnosis Trouble Codes. -x-----
ECM part number ECM part number can be read. x x - x x x -
ECU discrimi-
nated No.Classification number of a replacement ECU can be read to prevent an incorrect
ECU from being installed.--x----
Function testConducted by CONSULT-II instead of a technician to determine whether each
system is “OK” or “NG”.xxxxx - -
Control unit ini-
tializationAll registered ignition key IDs in NATS components can be initialized and new
IDs can be registered.------x
Self-function
checkECM checks its own NATS communication interface. - - - - - - x

GI-34
CONSULT-II CHECKING SYSTEM
Checking Equipment
EAS000GB
When ordering the following equipment, contact your NISSAN/INFINITI distributor.
NOTE:
●The CONSULT-II must be used in conjunction with a program card.
CONSULT-II does not require loading (Initialization) procedure.
●Be sure the CONSULT-II is turned off before installing or removing a program card.
CONSULT-II Data Link Connector (DLC) CircuitEAS000PD
INSPECTION PROCEDURE
If the CONSULT-II cannot diagnose the system properly, check the following items.
NOTE:
The DDL1 and DDL2 circuits from DLC pins 12, 13, 14 and 15 may be connected to more than one system. A
short in a DDL circuit connected to a control unit in one system may affect CONSULT-II access to other sys-
tems.
To o l n a m eDescription
NISSAN CONSULT-II
1. CONSULT-II unit (Tester internal soft: Resident
version 3.3.0) and accessories
2. Program card AED01A and AEN00B (For
NATS)
To confirm the best combination of these
softwares, refer to CONSULT-II Operation
Manual.
SGI083A
SGI125A
Symptom Check item
CONSULT-II cannot access
any system.
●CONSULT-II DLC power supply circuit (Terminal 8) and ground circuit (Terminal 4) (For detailed
circuit, refer to “MIL & Data Link Connectors Wiring Diagram” in EC section.)
●CONSULT-II DLC cable.
CONSULT-II cannot access
individual system. (Other sys-
tems can be accessed.)
●CONSULT-II program card (Check the appropriate CONSULT-II program card for the system.
Refer to "Checking Equipment".)
●Power supply and ground circuit for the control unit of the system (For detailed circuit, refer to wir-
ing diagram for each system.)
●Open or short circuit between the system and CONSULT-II DLC (For detailed circuit, refer to wiring
diagram for each system.)

LIFTING POINT
GI-35
C
D
E
F
G
H
I
J
K
L
MB
GI
LIFTING POINTPFP:00000
Special Service Tools EAS000FH
CAUTION:
●Every time the vehicle is lifted up, maintain the complete vehicle curb condition.
●Since the vehicle's center of gravity changes when removing main parts on the front side (engine,
transmission, suspension etc.), support a jack up point on the rear side garage jack with a mission
jack or equivalent.
●Since the vehicle's center of gravity changes when removing main parts on the rear side (rear axle,
suspension, etc.), support a jack up point on the front side garage jack with a mission jack or
equivalent.
●Be careful not to smash or do not do anything that would affect piping parts.
Garage Jack and Safety Stand EAS000FI
WARNING:
●Park the vehicle on a level surface when using the jack. Make sure to avoid damaging pipes,
tubes, etc. under the vehicle.
●Never get under the vehicle while it is supported only by the jack. Always use safety stands when
you have to get under the vehicle.
Tool number
Tool nameDescription
LM4086-0200
Board on lift attachment
LM4519-0000
Safety stand attachment
S-NT001
S-NT002

GI-36
LIFTING POINT
●Place wheel chocks at both front and back of the wheels on the ground.
2-pole Lift EAS000FJ
WARNING:
When lifting the vehicle, open the lift arms as wide as possible and ensure that the front and rear of
the vehicle are well balanced.
When setting the lift arm, do not allow the arm to contact the brake tubes, brake cable, fuel lines and
sill spoiler.
PAIA0001E
PAIA0002E

LIFTING POINT
GI-37
C
D
E
F
G
H
I
J
K
L
MB
GI
Board-on Lift EAS000FK
CAUTION:
Make sure vehicle is empty when lifting.
●The board-on lift attachment (LM4086-0200) set at front end
of vehicle should be set on the front of the sill under the
front door opening.
●Position attachments at front and rear ends of board-on lift.
AGI016

GI-38
TOW TRUCK TOWING
TOW TRUCK TOWING
PFP:00000
Tow Truck TowingEAS000FL
CAUTION:
●All applicable local laws regarding the towing operation must be obeyed.
●It is necessary to use proper towing equipment to avoid possible damage to the vehicle during
towing operation. Towing is in accordance with Towing Procedure Manual at dealer.
●Always attach safety chains before towing.
●When towing, make sure that the transmission, steering system and power train are in good order.
If any unit is damaged, dollies must be used.
●Never tow an automatic transmission model from the rear (that is backward) with four wheels on
the ground. This may cause serious and expensive damage to the transmission.
NISSAN recommends that towing dollies be used when towing your
vehicle beplaced on a flat bed truck as illustrated.
TOWING AN AUTOMATIC TRANSAXLE MODEL WITH FOUR WHEELS ON GROUND
Observe the following restricted towing speeds and distances.
CAUTION:
Never tow an automatic transaxle model from the rear (i.e., backward) with four wheels on the ground
as this may cause serious and expensive damage to the transaxle.
PAIA0012E
Speed :Below 50 km/h (30 MPH)
Distance :Less than 65 km(40 miles)