NISSAN NAVARA 2005 Repair Workshop Manual

SERVICE INFORMATION FOR ELECTRICAL INCIDENT
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no voltage; short is further down the circuit than SW1.
lWith SW1 closed, relay and solenoid disconnected and the DMM leads across both fuse terminals, check
for voltage.
voltage; short is between SW1 and the relay (point B).
no voltage; short is further down the circuit than the relay.
lWith SW1 closed, relay contacts jumped with fused jumper wire check for voltage.
voltage; short is down the circuit of the relay or between the relay and the disconnected solenoid (point C).
no voltage; retrace steps and check power to fuse block.
Ground Inspection
Ground connections are very important to the proper operation of electrical and electronic circuits. Ground
connections are often exposed to moisture, dirt and other corrosive elements. The corrosion (rust) can
become an unwanted resistance. This unwanted resistance can change the way a circuit works.
Electronically controlled circuits are very sensitive to proper grounding. A loose or corroded ground can drasti-
cally affect an electronically controlled circuit. A poor or corroded ground can easily affect the circuit. Even
when the ground connection looks clean, there can be a thin film of rust on the surface.
When inspecting a ground connection follow these rules:
lRemove the ground bolt or screw.
lInspect all mating surfaces for tarnish, dirt, rust, etc.
lClean as required to assure good contact.
lReinstall bolt or screw securely.
lInspect for “add-on” accessories which may be interfering with the ground circuit.
lIf several wires are crimped into one ground eyelet terminal, check for proper crimps. Make sure all of the
wires are clean, securely fastened and providing a good ground path. If multiple wires are cased in one
eyelet make sure no ground wires have excess wire insulation.
For detailed ground distribution information, refer to “Ground Distribution” in PG section.
Voltage Drop Tests
Voltage drop tests are often used to find components or circuits which have excessive resistance. A voltage
drop in a circuit is caused by a resistance when the circuit is in operation.
Check the wire in the illustration. When measuring resistance with DMM, contact by a single strand of wire will
give reading of 0 ohms. This would indicate a good circuit. When the circuit operates, this single strand of wire
is not able to carry the current. The single strand will have a high resistance to the current. This will be picked
up as a slight voltage drop.
Unwanted resistance can be caused by many situations as follows:
lUndersized wiring (single strand example)
lCorrosion on switch contacts
lLoose wire connections or splices.
SGI853

GI-30
SERVICE INFORMATION FOR ELECTRICAL INCIDENT
If repairs are needed always use wire that is of the same or larger gauge.
MEASURING VOLTAGE DROP — ACCUMULATED METHOD
lConnect 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.
lOperate the circuit.
lThe 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

SERVICE INFORMATION FOR ELECTRICAL INCIDENT
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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 ConditionVoltage
value [V]In case of high resistance such as single strand [V] *
1 LampSwitch ON Approx. 0 Battery voltage (Inoperative lamp)
Switch OFF Battery voltage Battery voltage
2SwitchSwitch ON Approx. 0 Higher than 0 Approx. 4 (Example)
Switch OFF Approx. 5 Approx. 5

GI-32
SERVICE INFORMATION FOR ELECTRICAL INCIDENT
Control Units and Electrical Parts
EAS001H1
PRECAUTIONS
lNever reverse polarity of battery terminals.
lInstall only parts specified for a vehicle.
lBefore replacing the control unit, check the input and output and
functions of the component parts.
lDo not apply excessive force when disconnecting a connector.
lIf a connector is installed by tightening bolts, loosen bolt mount-
ing it, then take it out by hand.
lBefore 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.
lFor 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.
lFor 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.
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SERVICE INFORMATION FOR ELECTRICAL INCIDENT
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lDo not apply excessive shock to the control unit by dropping or
hitting it.
lBe 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.
lBe careful not to let oil to get on the control unit connector.
lAvoid cleaning the control unit with volatile oil.
lDo not disassemble the control unit, and do not remove the
upper and lower covers.
lWhen 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.
lWhen checking input and output signals of the control unit, use
the specified check adapter.
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CONTROL UNIT CONFIGURATION PROCEDURE
CONTROL UNIT CONFIGURATION PROCEDURE
PFP:00000
DescriptionEAS001HD
Perform configuration and other appurtenant work in accordance with the procedures in the table after replac-
ing control unit shown below.
Part Replacement procedure Reference TableEAS001HA
1. Find and select a wok item code from the part replacement procedure reference table below.
2. If the replaced units matched the code table, select a work item code in end of the row.
3. Proceed to the work procedure page. (Refer toGI-36, "
Work Procedure")

CONTROL UNIT CONFIGURATION PROCEDURE
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´: replace unitPARTS REPLACEMENT ITEM
Work item
code
ECM BCMIntelligent Key
unitIntelligent KeySteering lock
unit
VIHCLE CONDITION
WITH NATS
WITH INTELLIGENT KEY SYSTEM
´´´´´A
´´´´—B
´´´—´A
´´´—— B
´´—´´B
´´—´—B
´´——´C
´´——— C
´—´´´D
´—´´—D
´—´—´E
´—´—— E
´——´´D
´——´—D
´———´F
´———— F
—´´´´B
—´´´—B
—´´—´B
—´´—— B
—´—´´B
—´—´—B
—´——´C
—´——— C
——´´´D
——´´—D
——´—´E
——´—— E
———´´D
———´—H
————´F
WITHOUT
INTELLIGENT
KEY SYSTEM
´´G
´—F
—´C
WITHOUT
NATS
´´I
´—J
—´K

GI-36
CONTROL UNIT CONFIGURATION PROCEDURE
Work Procedure
EAS001HB
NOTE:
The configuration procedure may differ according to the replaced unit, those always use the work item code to
determinate a appropriate procedure.
Work item code Confirmation procedure Refer page
A1.“Configuration” on CONSULT-II. (At ignition switch LOCK position.)GI-37, "
Configuration (BCM)"
2. Turn ignition switch ON with mechanical key. —
3. “C/U INITIALIZATION” on CONSULT-II. CONSULT-II operation manual NATS.
4. “REGIST I-KEY ID” on CONSULT-II. CONSULT-II operation manual NATS.
B1. “Configuration” on CONSULT-II. (At ignition switch LOCK position.)GI-37, "
Configuration (BCM)"
2. “STEERING LOCK RELEASE” on CONSULT-II. CONSULT-II operation manual NATS.
3. Turn ignition switch ON with mechanical key. —
4. “C/U INITIALIZATION” on CONSULT-II. CONSULT-II operation manual NATS.
5. “REGIST I-KEY ID” on CONSULT-II. CONSULT-II operation manual NATS.
C1. “Configuration” on CONSULT-II. (At ignition switch LOCK position.)GI-37, "
Configuration (BCM)"
2. “STEERING LOCK RELEASE” on CONSULT-II. CONSULT-II operation manual NATS.
3. Turn ignition switch ON with mechanical key. —
4. “C/U INITIALIZATION” on CONSULT-II. CONSULT-II operation manual NATS.
D1. “STEERING LOCK RELEASE” on CONSULT-II. CONSULT-II operation manual NATS.
2. Turn ignition switch ON with mechanical key. —
3. “C/U INITIALIZATION” on CONSULT-II. CONSULT-II operation manual NATS.
4. “REGIST I-KEY ID” on CONSULT-II. CONSULT-II operation manual NATS.
E1. Turn ignition switch ON with mechanical key. —
2. “REGIST I-KEY ID” on CONSULT-II. CONSULT-II operation manual NATS.
F Turn ignition switch ON with mechanical key. —
G1. “Configuration” on CONSULT-II.GI-37, "
Configuration (BCM)"
2. Turn ignition switch ON with mechanical key. —
3. “C/U INITIALIZATION” on CONSULT-II. CONSULT-II operation manual NATS.
H1. “STEERING LOCK RELEASE” on CONSULT-II. CONSULT-II operation manual NATS.
2. “C/U INITIALIZATION” on CONSULT-II. CONSULT-II operation manual NATS.
3. “REGIST I-KEY ID” on CONSULT-II. CONSULT-II operation manual NATS.
J1.“Configuration” on CONSULT-II. (At ignition switch ON position.)GI-37, "
Configuration (BCM)"
2. Erase the DTC (P1612) using CONSULT-II —
I “Configuration” on CONSULT-II. (At ignition switch ON position.)GI-37, "
Configuration (BCM)"
K Turn ignition switch ON with ignition key. —

CONTROL UNIT CONFIGURATION PROCEDURE
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Configuration (BCM)EAS001Q6
DESCRIPTION
CONFIGURATION has two functions as follows:
lREAD CONFIGURATION is the function to confirm vehicle configuration of current BCM.
lWRITE CONFIGURATION is the function to write vehicle configuration on BCM.
CAUTION:
lWhen replacing BCM, you must perform WRITE CONFIGURATION with CONSULT-II.
lComplete the procedure of WRITE CONFIGURATION in order.
lIf you set incorrect WRITE CONFIGURATION, incidents will occur.
lConfiguration is different for each vehicle model. Confirm configuration of each vehicle model.
READ CONFIGURATION PROCEDURE
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
1. With ignition switch OFF, connect CONSULT-II and CONSULT-II
CONVERTER to data link connector, and then turn ignition
switch ON.
2. Touch “START (NISSAN BASED VHCL)”.
3. Touch “BCM” on “SELECT SYSTEM” screen.
If “BCM” is not indicated, refer toGI-50, "
CONSULT-II Data Link
Connector (DLC) Circuit"in “GI” section.
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GI-38
CONTROL UNIT CONFIGURATION PROCEDURE
4. Touch “BCM” on “SELECT TEST ITEM” screen.
5. Touch “CONFIGURATION” on “SELECT DIAG MODE” screen.
6. Touch “R51/D40 (SPEC1)” (for UK models) or “R51/D40
(SPEC2)” (except for UK models) and “OK” on “VEHICLE
SELECT” screen.
For canceling, touch “CANCEL” on “VEHICLE SELECT” screen.
7. Touch “READ CONFIGURATION” on “SELECT CONFIG ITEM”
screen.
8. Configuration of current BCM is printed out automatically. A listing of manual setting items and auto set-
ting items will be displayed. Auto setting items are preset and cannot be changed. Manual setting items
can be set by using “WRITE CONFIGURATION PROCEDURE”. Refer toGI-41, "
WRITE CONFIGURA-
TION PROCEDURE".
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