belt INFINITI QX56 2006 Factory Workshop Manual

COMBINATION METERSDI-15
C
DE
F
G H
I
J
L
M A
B
DI
Revision: November 2009 2006 QX56
Next test requested tXXXXTachometer value in
RPM. Tachometer indi-
cates present RPM.Will display "-----" if message is
not received.
Next test requested F1 XXXX Present ratioed fuel level
A/D input 1 in decimal for-
mat. Fuel gauge indicates
present filtered level.000-009 = Short circuit
010-254 = Normal range
255 = Open circuit
--- = Missing 5 seconds
Next test requested F2 XXX Present FLPS. 010-254 normal range
Next test requested FS X Fuel filter rate 0 = Normal
1 = Fast
Next test requested XXXC Last temperature gauge
input value in degrees C.
Temperature gauge indi-
cates present filtered tem-
perature.Will display "---"C if message is
not received.
Will display "999" if data
received is invalid.
Next test requested BAtXX.X Estimated present bat-
tery voltage.
Next test requested rES -X Seat belt buckle switch
LH status.0 = Unbuckled
1 = Buckled
Next test requested PA -XX Hex value port A.
Next test requested Pb -XX Hex value port B.
Next test requested PE -XX Hex value port E.
Next test requested PL -XX Hex value port L.
Next test requested P6 -XX Hex value port K.
Next test requested Pn -XX Hex value port M.
Next test requested PP -XX Hex value port P.
Next test requested PS -XX Hex value port S.
Next test requested Pt -XX Hex value port T.
Next test requested Pu -XX Hex value port U.
Next test requested P4 -XX Hex value port V.
Next test requested Puu -XX Hex value port W.
Next test requested A00XXX A/D port A/D value (non-
ratioed).
0-255
Next test requested A01XXX A/D port A/D value (non-
ratioed).0-255
Next test requested A02XXX A/D port A/D value (non-
ratioed).0-255
Next test requested A03XXX A/D port A/D value (non-
ratioed).
0-255
Next test requested A04XXX A/D port A/D value (non-
ratioed).0-255
Next test requested A05XXX A/D port A/D value (non-
ratioed).0-255
Next test requested A06XXX A/D port A/D value (non-
ratioed).
0-255
Next test requested A07XXX A/D port A/D value (non-
ratioed).0-255
Next test requested A08XXX A/D port A/D value (non-
ratioed).0-255
Next test requested A09XXX A/D port A/D value (non-
ratioed).
0-255
Event Odometer Display Description of Test/Data Notes:

WARNING CHIMEDI-43
C
DE
F
G H
I
J
L
M A
B
DI
Revision: November 2009 2006 QX56
WARNING CHIMEPFP:24814
Component Parts and Harness Connector LocationEKS00BCO
1. Fuse block (J/B)2. Fuse and fusible link box3. Fuse and relay box
4. Combination meter M24 5. Combination switch (lighting switch)
M28 6. BCM M18, M19, M20 (view with
instrument lower panel LH removed)
7. Front door switch LH B8 8. Key switch and key lock solenoid
M27 9. Seat belt buckle pre-tensioner
assembly LH (seat belt buckle
switch) B74
WKIA4594E

DI-44
WARNING CHIME
Revision: November 20092006 QX56
System DescriptionEKS00BCP
FUNCTION
Power is supplied at all times

through 50A fusible link (letter f , located in the fuse and fusible link box)

to BCM terminal 70, and

through 10A fuse [No. 19, located in the fuse block (J/B)]

to key switch and key lock solenoid terminal 3.
With ignition switch in ON or START position, power is supplied

through 10A fuse (No. 59, located in the fuse and relay box)

to BCM terminal 38.
Ground is supplied

to BCM terminal 67

through body grounds M57, M61, and M79.
NOTE:
When ignition key warning chime, light warning chime, and seat belt warning chime are required at the same
time, the priorities for each chime are the following.
1. Light warning chime
2. Ignition key warning chime
3. Seat belt warning chime
IGNITION KEY WARNING CHIME
With the key inserted in the ignition switch, the ignition switch in OFF position, and the driver's door open, the
warning chime will sound.
Power is supplied

through key switch and key lock solenoid terminal 4

to BCM terminal 37.
Ground is supplied

to BCM terminal 47

through front door switch LH terminal 2.
Front door switch LH is case grounded.
BCM detects key inserted into the ignition switch, and sends key warning signal to combination meter via CAN
communication lines. When the combination meter receives key warning signal, it sounds warning chime.
LIGHT WARNING CHIME
With the key removed from the ignition switch, the driver's door open, and the lighting switch (part of the com-
bination switch) in 1st or 2nd position, the warning chime will sound. [Except when headlamp battery saver
control operates (5 minutes after ignition switch is turned to OFF or ACC position) and headlamps do not illu-
minate.]
Signal is supplied

from combination switch (lighting switch) terminals 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10

to BCM terminals 2, 3, 4, 5, 6, 32, 33, 34, 35 and 36.
NOTE:
BCM detected lighting switch in 1st or 2nd position. Refer to BCS-3, "
COMBINATION SWITCH READING
FUNCTION" .
Ground is supplied

to BCM terminal 47

through front door switch LH terminal 2.
Front door switch LH is case grounded.
BCM detects headlamps are illuminated, and sends light warning signal to combination meter CAN communi-
cation lines. When the combination meter receives light warning signal, it sounds warning chime.
SEAT BELT WARNING CHIME
When the ignition switch is turned ON with the seat belt unfastened [seat belt buckle pre-tensioner assembly
LH (seat belt buckle switch) unfastened], warning chime will sound for approximately 6 seconds.

WARNING CHIMEDI-45
C
DE
F
G H
I
J
L
M A
B
DI
Revision: November 2009 2006 QX56
Ground is supplied

to combination meter terminal 27

through seat belt buckle pre-tensioner assembly LH (seat belt buckle switch) terminal 4.
Seat belt buckle pre-tensioner assembly LH (seat belt buckle switch) terminal 3 is grounded through body
grounds B7 and B19.
The combination meter sends seat belt buckle switch LH unfastened signal to BCM via CAN communication
line.
BCM receives seat belt buckle pre-tensioner assembly LH (seat belt buckle switch) unfastened signal from
combination meter via CAN communication line, and sends seat belt warning signal to the combination meter
via CAN communication line. When the combination meter receives the seat belt warning signal, it sounds the
warning chime. The BCM controls the (6 second) duration of the seat belt warning chime.
CAN Communication System DescriptionEKS00BCQ
Refer to LAN-26, "CAN COMMUNICATION" .

WARNING CHIMEDI-49
C
DE
F
G H
I
J
L
M A
B
DI
Revision: November 2009 2006 QX56
Terminals and Reference Value for Combination MeterEKS00BCT
How to Proceed With Trouble DiagnosisEKS00BCU
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to DI-44, "
System Description" .
3. Perform the preliminary check. Refer to DI-50, "
Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction.
5. Does the warning chime operate properly? If so, go to 6. If not, go to 3.
6. Inspection End.
35 O/B Combination switch output 2
ON

Light switch and wiper switch
OFF

Wiper dial position 4
36 R/W Combination switch output 1
37 B/R Key switch signal
OFFKey is removed
0
Key is inserted Battery voltage
38 W/L Ignition switch ON or START ON —Battery voltage
39 L CAN-H —— —
40 P CAN-L —— —
47 SB Front door switch LH signal OFF ON (open)
0
OFF (closed) 5
67 B Ground OFF— 0
70 W/B Battery power supply OFF— Battery voltage
Terminal
No. Wire
color Item Condition
Reference value (V)
(Approx.)
Ignition
switch Measurement method
SKIA5292E
Terminal
No. Wire
color Item Condition
Reference value (V)
(Approx.)
Ignition
switch Measurement method
11 L C A N - H —— —
12 P CAN-L —— —
17 B Ground OFF— 0
24 O/L Ignition switch ON or START ON —Battery voltage
27 O/B Seat belt buckle pre-ten-
sioner assembly (seat belt
buckle switch) LH
ONUnfastened (ON)
0
Fastened (OFF) Battery voltage

WARNING CHIMEDI-53
C
DE
F
G H
I
J
L
M A
B
DI
Revision: November 2009 2006 QX56
Display Item List
SELF-DIAGNOSTIC RESULTS
Operation Procedure
1. Touch “BCM” on “SELECT TEST ITEM ” screen.
2. Touch “SELF-DIAG RESULTS ” on “SELECT DIAG MODE ” screen.
3. Self-diagnostic results are displayed.
Display Item List
All Warning Chimes Do Not OperateEKS00BCX
1. CHECK BCM CHIME OPERATION
Select “BUZZER ” on CONSULT-II, and perform “LIGHT WARN
ALM ”, "IGN KEY WARN ALM", OR "SEAT BELT WARN TEST"
active test.
Does chime sound?
YES >> Replace the BCM. Refer to BCS-20, "BCM" .
NO >> Replace the combination meter. Refer to IP-13, "
COM-
BINATION METER" .
Test item Malfunction is detected when
LIGHT WARN ALM This test is able to check light warning chime operation. Light warning chime sounds for 2 sec-
onds after touching
“ON ” on CONSULT-II screen.
IGN KEY WARN ALM This test is able to check key warning chime operation. Key warning chime sounds for 2 seconds
after touching
“ON ” on CONSULT-II screen.
SEAT BELT WARN TEST This test is able to check seat belt warning chime operation. Seat belt warning chime sounds for 2
seconds after touching
“ON ” on CONSULT-II screen.
Monitored Item CONSULT-II display Description
CAN communication CAN communication [U1000] Malfunction is detected in CAN communication.
CAN communication system CAN communication system 1 to 6 [U1000] Malfunction is detected in CAN system.
SKIA6331E

DI-54
WARNING CHIME
Revision: November 20092006 QX56
Key Warning Chime and Light Warning Chime Do Not Operate (Seat Belt Warn-
ing Chime Does Operate)
EKS00BCY
1. CHECK BCM INPUT SIGNAL
With CONSULT-II
1. Select "BCM" on CONSULT-II.
2. With "DATA MONITOR" of "BUZZER", confirm "DOOR SW-DR" changes with the status of front door LH.
Without CONSULT-II
Check voltage between BCM harness connector M19 terminal 47
and ground.
OK or NG
OK >> Replace the BCM. Refer to BCS-20, "BCM" .
NG >> GO TO 2.
2. CHECK FRONT DOOR SWITCH LH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector M19 and front door switch LH con- nector B8.
3. Check continuity between BCM harness connector M19 terminal 47 and front door switch LH harness connector B8 terminal 2.
4. Check continuity between BCM harness connector M19 terminal 47 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector. When front door LH is
opened
: DOOR SW-DR ON
When front door LH is
closed : DOOR SW-DR OFF
LKIA0335E
When front door LH is
opened: Approx. 0V
When front door LH is
closed : Approx. 5V
WKIA1515E
Continuity should exist.
Continuity should not exist.
WKIA1516E

WARNING CHIMEDI-55
C
DE
F
G H
I
J
L
M A
B
DI
Revision: November 2009 2006 QX56
3. CHECK FRONT DOOR SWITCH LH
Check continuity between front door switch LH terminal 2 and
exposed metal of switch while pressing and releasing switch.
OK or NG
OK >> Replace the BCM. Refer to BCS-20, "BCM" .
NG >> Replace the front door switch LH.
Key Warning Chime Does Not OperateEKS00BCZ
1. CHECK FUSE
Check if the key switch fuse [No. 19, located in the fuse block (J/B)] is blown. Refer to DI-46, "
Wiring Diagram
— CHIME —" .
Is the fuse blown?
YES >> Replace the fuse. Be sure to repair the cause of malfunction before installing new fuse.
NO >> GO TO 2.
2. CHECK WARNING CHIME OPERATION
With key removed from the ignition key cylinder and the front door LH open, turn the lighting switch to 1st or
2nd position.
Does warning chime sound?
YES >> GO TO 3.
NO >> Go to DI-53, "
All Warning Chimes Do Not Operate" or DI-54, "Key Warning Chime and Light
Warning Chime Do Not Operate (Seat Belt Warning Chime Does Operate)" .
When front door switch
LH is released
: Continuity should exist.
When front door switch
LH is pressed : Continuity should not
exist.
WKIA2023E

WARNING CHIMEDI-57
C
DE
F
G H
I
J
L
M A
B
DI
Revision: November 2009 2006 QX56
5. CHECK KEY SWITCH CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector M18 terminal 37 and key switch and key lock solenoid harness connector M27
terminal 4.
3. Check continuity between BCM harness connector M18 terminal 37 and ground.
OK or NG
OK >> GO TO 6.
NG >> Repair harness or connector.
6. CHECK KEY SWITCH POWER SUPPLY CIRCUIT
Check voltage between key switch and key lock solenoid harness
connector M27 terminal 3 and ground.
OK or NG
OK >> Replace the BCM. Refer to BCS-20, "BCM" .
NG >> Check harness for open or short between fuse and key switch and key lock solenoid.
Light Warning Chime Does Not OperateEKS00BD0
1. CHECK WARNING CHIME OPERATION
Check key warning chime and seat belt warning chime functions.
Do key warning chime and seat belt warning chime sound?
YES >> GO TO 2.
NO >> Go to DI-53, "
All Warning Chimes Do Not Operate" .
2. CHECK BCM INPUT SIGNAL
With CONSULT-II
1. Select "BCM".
2. With "DATA MONITOR" of "BUZZER", confirm "LIGHT SW 1ST" status changes when the lighting switch is moved from ON (1st
position) to OFF.
Without CONSULT-II
Check combination switch. Refer to LT- 1 0 1 , "
Combination Switch
Reading Function" .
OK or NG
OK >> Replace the BCM. Refer to BCS-20, "BCM" .
NG >> Check lighting switch. Refer to LT- 1 0 1 , "
Combination Switch Reading Function" .
Continuity should exist.
Continuity should not exist.
WKIA2074E
Battery voltage should exist.
WKIA2075E
Lighting switch ON (1st position) : LIGHT SW 1ST ON
Lighting switch OFF : LIGHT SW 1ST OFF
WKIA1877E

DI-58
WARNING CHIME
Revision: November 20092006 QX56
Seat Belt Warning Chime Does Not OperateEKS00BD1
1. CHECK WARNING CHIME OPERATION
1. With key removed from the ignition and the front door LH open, turn the lighting switch to 1st or 2nd posi- tion.
2. Return lighting switch to OFF position, and insert key into ignition.
Does warning chime sound for both steps?
YES >> GO TO 2.
NO >> Go to DI-53, "
All Warning Chimes Do Not Operate" .
2. CHECK SEAT BELT WARNING LAMP OPERATION
Turn ignition switch ON. Buckle and unbuckle the driver seat belt while watching seat belt warning lamp.
OK or NG
OK >> Replace the BCM. Refer to BCS-20, "BCM" .
NG >> GO TO 3.
3. CHECK COMBINATION METER INPUT SIGNAL
1. Turn ignition switch ON.
2. Check voltage between combination meter harness connector M24 terminal 27 and ground.
OK or NG
OK >> Replace the combination meter. Refer to IP-13, "COMBINATION METER" .
NG >> GO TO 4.
4. CHECK SEAT BELT BUCKLE SWITCH
1. Turn ignition switch OFF.
2. Disconnect seat belt buckle pre-tensioner assembly LH (seat belt buckle switch) connector.
3. Check continuity between seat belt buckle pre-tensioner assem- bly LH (seat belt buckle switch) terminals 3 and 4.
OK or NG
OK >> GO TO 5.
NG >> Replace the seat belt buckle pre-tensioner assembly LH (seat belt buckle switch). When seat belt is fastened : Warning lamp OFF
When seat belt is unfastened : Warning lamp ON
Te r m i n a l s
ConditionVoltage (V)
(Approx.)
(+)
(– )
Connector Terminal
M24 27 Ground Seat belt is fastened Battery voltage
Seat belt is unfastened
0
WKIA1821E
TerminalsConditionContinuity
34 Seat belt is fastened
No
Seat belt is unfastened Yes
WKIA4404E