2004 INFINITI QX56 Light

BL-86
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Revision: August 20072004 QX56
Terminals and Reference Value for IPDM E/REIS002SJ
*1: when horn reminder is ON.
*2: L/W is for USA.
*3: Y is for Canada.
CONSULT-II Function (BCM)EIS002SK
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
Terminal Wire
ColorItem ConditionVoltage (V)
(Approx.)
38 B Ground — 0
39 W CAN-H — —
40 R CAN-L — —
41 Y/B Hood switchHood closed OFF Battery voltage
Hood open ON 0V
45 G/W Horn relayWhen doors locks are operated
using keyfob (OFF → ON) *1Battery voltage → 0V
52 L Headlamp low (LH)Ignition
SW ONLighting
switch
2ND posi-
tionOFF 0V
ON Battery voltage
54 R/Y Headlamp low (RH)Ignition
SW ONLighting
switch
2ND posi-
tionOFF 0V
ON Battery voltage
55 G Headlamp high (LH)Ignition
SW ONLighting
switch
HIGH or
PA S S
positionOFF 0V
ON Battery voltage
56L/W *2
Y *3Headlamp high (RH)Ignition
SW ONLighting
switch
HIGH or
PA S S
positionOFF 0V
ON Battery voltage
59 B Ground — 0
BCM
diagnostic test itemDiagnostic mode Description
Inspection by partWORK SUPPORTSupports inspections and adjustments. Commands are transmitted to the
BCM for setting the status suitable for required operation, input/output sig-
nals are received from the BCM and received date is displayed.
DATA MONITOR Displays BCM input/output data in real time.
ACTIVE TESTOperation of electrical loads can be checked by sending drive signal to
them.
SELF-DIAG RESULTS Displays BCM self-diagnosis results.
CAN DIAG SUPPORT MNTRThe result of transmit/receive diagnosis of CAN communication can be
read.
ECU PART NUMBER BCM part number can be read.
CONFIGURATION Performs BCM configuration read/write functions.

BL-100
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Revision: August 20072004 QX56
Vehicle Security Horn Alarm CheckEIS002SR
1. CHECK HORN OPERATION
Check if horn sounds with horn switch.
Does horn operate?
Yes >> Check harness for open or short between IPDM E/R and horn relay.
No >> Check horn circuit. Refer to WW-56, "
HORN" .
Vehicle Security Headlamp Alarm Check EIS002SS
1. CHECK VEHICLE SECURITY HEADLAMP ALARM OPERATION
Check if headlamps operate with lighting switch.
Do headlamps come on when turning switch ON?
Yes >> Headlamp alarm is OK.
No >> Check headlamp system. Refer to LT- 6 , "
HEADLAMP (FOR USA)" or LT-34, "HEADLAMP (FOR
CANADA) - DAYTIME LIGHT SYSTEM -" .
Door Lock/Unlock Switch Check EIS002ST
1. CHECK DOOR LOCK/UNLOCK SWITCH INPUT SIGNAL
Check if power door lock operates with door lock/unlock switch.
Do doors lock/unlock when using each door lock/unlock switch?
Yes >> Door lock/unlock switch is OK.
No >> Refer to BL-34, "
Door Lock/Unlock Switch Check" .

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
BL-139
C
D
E
F
G
H
J
K
L
MA
B
BL
Revision: August 20072004 QX56
System DescriptionEIS002TM
IVIS (Infiniti Vehicle Immobilizer System-NATS) has the following immobilizer functions:

Since only IVIS (NATS) ignition keys, whose IDs have been registered into the ECM and BCM, allow the
engine to run, operation of a stolen vehicle without an IVIS (NATS) registered key is prevented by IVIS
(NATS).
IVIS (NATS) will immobilize the engine if someone tries to start it without the registered key of IVIS
(NATS).

All of the originally supplied ignition key IDs have been IVIS (NATS) registered.
If requested by the vehicle owner, a maximum of five key IDs can be registered into the IVIS (NATS) com-
ponents.

The security indicator blinks when the ignition switch is in OFF or ACC position. IVIS (NATS) warns out-
siders that the vehicle is equipped with the anti-theft system.

When IVIS (NATS) detects a malfunction, the security indicator lamp lights up while ignition key is in the
ON position.

IVIS (NATS) trouble diagnoses, system initialization and additional registration of other IVIS (NATS) igni-
tion key IDs must be carried out using CONSULT-II hardware and CONSULT-II IVIS (NATS) software.
When IVIS (NATS) initialization has been completed, the ID of the inserted ignition key is automatically
IVIS (NATS) registered. Then, if necessary, additional registration of other IVIS (NATS) ignition key IDs
can be carried out.
Regarding the procedures of IVIS (NATS) initialization and IVIS (NATS) ignition key ID registration, refer
to CONSULT-II Operation Manual NATS-IVIS/NVIS.

When servicing a malfunction of the IVIS (NATS) (indicated by lighting up of Security Indicator
Lamp) or registering another IVIS (NATS) ignition key ID, it may be necessary to re-register origi-
nal key identification. Therefore, be sure to receive ALL KEYS from vehicle owner.
System CompositionEIS0 02 T N
The immobilizer function of the IVIS (NATS) consists of the following:

NATS ignition key

NATS antenna amp. located in the ignition key cylinder

Body control module (BCM)

Engine control module (ECM)

Security indicator
NOTE:
The communication between ECM and BCM uses the CAN communication system.
PIIA1121E

BL-146
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Revision: August 20072004 QX56
Trouble DiagnosesEIS002TT
SYMPTOM MATRIX CHART 1
Self-diagnosis related item
*: When IVIS (NATS) detects trouble, the security indicator lights up while ignition key is in the “ON” position.SymptomDisplayed “SELF-DIAG
RESULTS” on CON-
SULT-II screen.Diagnostic Procedure
(Reference page)System
(Malfunctioning part or
mode)Reference Part No. Of
Illustration On System
Diagram

Security indicator
lighting up*

Engine cannot be
startedCHAIN OF ECM-IMMU
[P1612]PROCEDURE 1
(BL-148
)In rare case, “CHAIN OF
ECM-IMMU” might be
stored during key regis-
tration procedure, even if
the system is not mal-
functioning.—
Open circuit in battery
voltage line of BCM cir-
cuitC1
Open circuit in ignition
line of BCM circuitC2
Open circuit in ground
line of BCM circuitC3
Open or short circuit
between BCM and ECM
communication lineC4
ECM B
BCM A
DIFFERENCE OF KEY
[P1615]PROCEDURE 2
(BL-149
)Unregistered key D
BCM A
CHAIN OF IMMU-KEY
[P1614]PROCEDURE 5
(BL-152
)Malfunction of key ID
chipE5
Communication line
between ANT/ AMP and
BCM:
Open circuit or short cir-
cuit of battery voltage
line or ground lineE1
E2
Open circuit in power
source line of ANT/ AMP
circuitE3
Open circuit in ground
line of ANT/ AMP circuitE4
NATS antenna amp. E6
BCM A
ID DISCORD, IMM-ECM
[P1611]PROCEDURE 3
(BL-150
)System initialization has
not yet been completed.F
ECM B
LOCK MODE
[P1610]PROCEDURE 4
(BL-151
)LOCK MODE D
Security indicator light-
ing up*DON'T ERASE
BEFORE CHECKING
ENG DIAGWORK FLOW
(BL-145
)Engine trouble data and
IVIS (NATS) trouble data
have been detected in
ECM—

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
BL-147
C
D
E
F
G
H
J
K
L
MA
B
BL
Revision: August 20072004 QX56
SYMPTOM MATRIX CHART 2
Non self-diagnosis related item
*: CONSULT-II self-diagnostic results display screen “no malfunction is detected”.
DIAGNOSTIC SYSTEM DIAGRAM
SymptomDiagnostic Procedure
(Reference page)System
(Malfunctioning part or mode)Reference Part No. Of Illustra-
tion On System Diagram
Security indicator does not light
up*.PROCEDURE 6
(BL-155
)Combination meter (security
indictor lamp)—
Open circuit between fuse and
BCM—
BCM A
WIIA0550E

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
BL-155
C
D
E
F
G
H
J
K
L
MA
B
BL
Revision: August 20072004 QX56
Diagnostic Procedure 6EIS002TZ
“SECURITY INDICATOR LAMP DOES NOT LIGHT UP”
1. CHECK FUSE
Check 10A fuse [No.19, located in the fuse block (J/B)]
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2. CHECK SECURITY INDICATOR LAMP
1. Start engine and turn ignition switch OFF.
2. Check the security indicator lamp lights up.
OK or NG
OK >> Inspection End.
NG >> GO TO 3.
3. CHECK SECURITY INDICATOR LAMP POWER SUPPLY CIRCUIT
1. Disconnect security indicator lamp.
2. Check voltage between security indicator lamp connector M24
terminal 8 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4. CHECK BCM (NATS CONTROL UNIT) FUNCTION
1. Connect security indicator lamp.
2. Disconnect BCM.
3. Check voltage between BCM connector M18 terminal 23 and
ground.
OK or NG
OK >> BCM is malfunctioning.

Replace BCM.
Ref. part No. A

Perform initialization with CONSULT-II.

For initialization, refer to “CONSULT-II Operation
Manual NATS-IVIS/NVIS”.
NG >> Check the following:

Harness for open or short between security indicator lamp and BCM (NATS control unit).

Indicator lamp condition Security indicator lamp should light up.
8 (Y/R) - Ground : Battery voltage
LIIA1072E
23 (G/O) - Ground : Battery voltage
LIIA0523E

BL-158
HOMELINK UNIVERSAL TRANSCEIVER
Revision: August 20072004 QX56
Trouble DiagnosesEIS0 02 U2
DIAGNOSTIC PROCEDURE
SYMPTOM: Transmitter does not activate receiver.
Before conducting the procedure given below, make sure that system receiver (garage door opener, etc.)
operates with original, hand-held transmitter. If NG, receiver or hand-held transmitter is at fault, not vehicle
related.
1. ILLUMINATE CHECK

Turn ignition switch OFF.

Does amber light (LED) of transmitter illuminate when any but-
ton is pressed?
YES or NO
YES >> GO TO 2.
NO >> GO TO 3.
2. TRANSMITTER CHECK
Check transmitter with Tool. For details, refer to Technical Service Bulletin.
OK or NG
OK >> Receiver or hand-held transmitter malfunction, not vehicle related.
NG >> Replace transmitter.
3. POWER SUPPLY CHECK
1. Disconnect transmitter.
2. Check voltage between HomeLink® universal transceiver connector R106 terminal 1 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace fuse or harness.
4. GROUND CIRCUIT CHECK
Check continuity between HomeLink® universal transceiver connector R106 terminal 2 (B) and body ground.
OK or NG
OK >> Replace HomeLink® universal transceiver.
NG >> Repair or replace harness.
LIIA1466E
1 (Y/R) - Ground : Battery voltage
LIIA1467E
2 (B) - Ground : Continuity should exist.
LIIA2039E

BRC-4
[VDC/TCS/ABS]
PRECAUTIONS
Revision: August 20072004 QX56

If YES, GO TO 2.

If NO, GO TO 5.
2. Is there any indication other than indications relating to CAN communication system in the self-diagnosis
results?

If YES, GO TO 3.

If NO, GO TO 4.
3. Based on self-diagnosis results unrelated to CAN communication, carry out the inspection.
4. Malfunctions may be detected in self-diagnosis depending on control units carrying out CAN communica-
tion. Therefor, erase the self-diagnosis results.
5. Diagnose CAN communication system. Refer to BRC-10, "
CAN COMMUNICATION" .
Precautions for Brake ControlEFS003QD

During ABS operation, the brake pedal may vibrate lightly and a mechanical noise may be heard. This is
normal.

Just after starting vehicle, the brake pedal may vibrate or a motor operating noise may be heard from
engine compartment. This is a normal status of operation check.

Stopping distance may be longer than that of vehicles without ABS when vehicle drives on rough, gravel,
or snow-covered (fresh, deep snow) roads.

When an error is indicated by ABS or another warning lamp, collect all necessary information from cus-
tomer (what symptoms are present under what conditions) and check for simple causes before starting
diagnosis. Besides electrical system inspection, check booster operation, brake fluid level, and fluid leaks.

If incorrect tire sizes or types are installed on the vehicle or brake pads are not Genuine NISSAN parts,
stopping distance or steering stability may deteriorate.

If there is a radio, antenna or related wiring near control module, ABS function may have a malfunction or
error.

If aftermarket parts (car stereo, CD player, etc.) have been installed, check for incidents such as harness
pinches, open circuits or improper wiring.

If the following components are replaced with non-genuine components or modified, the VDC OFF indica-
tor lamp and SLIP indicator lamp may turn on or the VDC system may not operate properly. Components
related to suspension (shock absorbers, struts, springs, bushings, etc.), tires, wheels (exclude specified
size), components related to brake system (pads, rotors, calipers, etc.), components related to engine
(muffler, ECM, etc.), components related to body reinforcement (roll bar, tower bar, etc.).

Driving with broken or excessively worn suspension components, tires or brake system components may
cause the VDC OFF indicator lamp and the SLIP indicator lamp to turn on, and the VDC system may not
operate properly.

When the TCS or VDC is activated by sudden acceleration or sudden turn, some noise may occur. The
noise is a result of the normal operation of the TCS and VDC.

When driving on roads which have extreme slopes (such as mountainous roads) or high banks (such as
sharp curves on a freeway), the VDC may not operate normally, or the VDC warning lamp and the SLIP
indicator lamp may turn on. This is not a problem if normal operation can be resumed after restarting the
engine.

Sudden turns (such as spin turns, acceleration turns), drifting, etc. with VDC turned off may cause the yaw
rate/side G sensor to indicate a problem. This is not a problem if normal operation can be resumed after
restarting the engine.
Precautions for CAN SystemEFS003QE

Do not apply voltage of 7.0V or higher to terminal to be measured.

Maximum open terminal voltage of tester in use must be less than 7.0V.

Before checking harnesses, turn ignition switch OFF and disconnect battery negative cable.