2008 INFINITI QX56 battery volt

AV-146
< ECU DIAGNOSIS >[AUDIO SYSTEM]
BOSE SPEAKER AMP
23
(W) 33
(B) Audio signal rear RH Input Ignition
switch ON Audio input
25
(W/G) Ground Subwoofer amp. ON signal Output Ignition
switch ACC —
Battery voltage
31
(GR/L) Ground Amp. ON signal
InputIgnition
switch
ACC —
Battery voltage
37
(W/R) 27
(L) Audio signal back door
speaker RH
InputIgnition
switch
ON Audio input
Terminal
(Wire color) Description
ConditionReference value
(Approx.)
+ – Signal nameInput/
Output
SKIB3609E
SKIB3609E
Revision: March 2010 2008 QX56

AV
REAR VIEW CAMERA CONTROL UNITAV-147
< ECU DIAGNOSIS > [AUDIO SYSTEM]
C
D
E
F
G H
I
J
K L
M B A
O P
REAR VIEW CAMERA CONTROL UNIT
Reference ValueINFOID:0000000001696146
TERMINAL LAYOUT
PHYSICAL VALUES
WKIA5224E
Te r m i n a l
(wire color) Description
ConditionReference value
(Approx.)
+ – Signal nameInput/
Output
1
(Y) Ground Battery power
InputIgnition
switch
OFF —
Battery voltage
2
(V) Ground ACC power
InputIgnition
switch ACC —
Battery voltage
3
(B) Ground Ground
—Ignition
switch
ON —0
V
4
(G/W) Ground Reverse signal input
InputIgnition
switch ON A/T selector lever R
position
Battery voltage
A/T selector lever in
other than R position 0V
5
(BR) Ground AV Control
OutputIgnition
switch ON —0
V
6
(G/W) Ground DDL
Output ———
8
(Y) Ground Camera power output Output Ignition
switch ON A/T selector lever R
position
6V
9 Ground Camera image input (–) Input Ignition
switch
ON —0
V
10
(G) Ground Camera image input (+) Input Ignition
switch
ON A/T selector lever R
position
SKIA4894E
Revision: March 2010
2008 QX56

AV
DVD PLAYERAV-149
< ECU DIAGNOSIS > [AUDIO SYSTEM]
C
D
E
F
G H
I
J
K L
M B A
O P
DVD PLAYER
Reference ValueINFOID:0000000001696147
PHYSICAL VALUES
AWNIA1876ZZ
Te r m i n a l
(Wire color) Description
ConditionReference value
(Approx.)
+ – Signal nameInput/
Output
1
(W) 2
(B) DVD audio signal LH Output Ignition
switch ON With operation of the DVD
player
3—Shield —— — —
5
(B) Ground Ground
—Ignition
switch ON —0
V
6
(BR) Ground Illumination control (pulse
width modulated) — — With lighting switch ON
—
7
(W/L) Ground Can communication Input/
Output Ignition
switch ON ——
9
(SB) Ground
Video monitor power sup-
ply OutputIgnition
switch
ON With DVD player operation
Battery voltage
10
(G/Y) Ground Switch power
OutputIgnition
switch ON With DVD player operation
5V
12
(B/W) Ground VTR (+)
OutputIgnition
switch ON With DVD player operation
—
13
(L) Ground VTR (-)
OutputIgnition
switch
ON With DVD player operation
—
14
(B/W) Ground Display ground
—Ignition
switch ON With DVD player operation
0V
16
(Y) — Data receive
Input —— —
SKIB3609E
Revision: March 2010 2008 QX56

AV-150
< ECU DIAGNOSIS >[AUDIO SYSTEM]
DVD PLAYER
17
(R) 18
(G) DVD audio signal RH Output Ignition
switch ON With DVD player operation
21
(Y) Ground Battery power
Input ——Battery voltage
22
(R/L) Ground Illumination power
Input —With instrument illumination
ON Battery voltage
23
(P/B) Ground CAN communication
Input/
Output Ignition
switch
ON —0
V
24
(V) Ground ACC power
InputIgnition
switch
ACC or
ON —
Battery voltage
25
(BR) Ground Video monitor power Output Ignition
switch ON With DVD player operation
Battery voltage
26
(B/Y) Ground Video monitor ground Input Ignition
switch ON With instrument illumination
ON 0V
28
(B/W) Ground Video out
InputIgnition
switch
ACC or
ON —
30 — Shield — — ——
32
(BR) — Data transmit
Output ———
Terminal
(Wire color) Description
ConditionReference value
(Approx.)
+ – Signal nameInput/
Output
SKIB3609E
SKIB2251J
Revision: March 2010 2008 QX56

BCS-28
< FUNCTION DIAGNOSIS >[BCM]
DIAGNOSIS SYSTEM (BCM)
ERASE SELF-DIAGNOSIS
With CONSULT-III
1. Perform applicable inspection of malfunctioning item and then repair or replace.
2. Turn ignition switch “ON” and select “SELF-DIAG
RESULTS” mode for “AIR PRESSURE MONITOR” with
CONSULTIII.
3. Touch “ERASE” on CONSULT-III screen to erase memory.
Without CONSULT-III
• In order to make it easier to find the cause of hard-to-duplicate malfunctions, malfunction information is stored into the control unit as necessary during use by the user. This memory is not erased no matter how
many times the ignition switch is turned “ON” and“OFF”.
• However, this information is erased by turning igniti on switch “OFF” after performing self-diagnostic or by
erasing the memory using the CONSULT-III.
AIR PRESSURE MONITOR : CONSULT-III FunctionINFOID:0000000001696431
WORK SUPPORT MODE
31 Transmitter ch
ecksum error
(Front LH) Checksum data from front LH transmitter is malfunctioning.
WT-32
32Transmitter ch
ecksum error
(Front RH) Checksum data from front RH transmitter is malfunctioning.
33 Transmitter ch
ecksum error
(Rear RH) Checksum data from rear RH transmitter is malfunctioning.
34 Transmitter ch
ecksum error
(Rear LH) Checksum data from rear RH transmitter is malfunctioning.
35 Transmitter pressure data error
(Front LH) Air pressure data from front LH transmitter is malfunction.
WT-32
36Transmitter pressure data error
(Front RH) Air pressure data from front RH transmitter is malfunction.
37 Transmitter pressure data error
(Rear RH)
Air pressure data from rear RH transmitter is malfunction.
38 Transmitter pressure data error
(Rear LH) Air pressure data from rear LH transmitter is malfunction.
41 Transmitter function code error
(Front LH) Function code data from front LH transmitter is malfunction.
WT-32
42Transmitter function code error
(Front RH)
Function code data from front RH transmitter is malfunction.
43 Transmitter function code error
(Rear RH) Function code data from rear RH transmitter is malfunction.
44 Transmitter function code error
(Rear LH) Function code data from rear LH transmitter is malfunction.
45 Transmitter battery voltage low
(Front LH)
Battery voltage of front LH transmitter drops.
WT-32
46Transmitter battery voltage low
(Front RH) Battery voltage of front RH transmitter drops.
47 Transmitter battery voltage low
(Rear RH) Battery voltage of rear RH transmitter drops.
48 Transmitter battery voltage low
(Rear LH)
Battery voltage of rear LH transmitter drops.
52 Vehicle speed signal error Speed signal is not detected. WT-32
No flicker-
ing Tire pressure warning check
switch
Tire pressure warning sw
itch circuit is open. –
Flickering
pattern Items
Diagnostic items detected when··· Check item
Revision: March 2010 2008 QX56

BCS-32
< COMPONENT DIAGNOSIS >[BCM]
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
Diagnosis ProcedureINFOID:0000000001696439
1. CHECK FUSES AND FUSIBLE LINK
Check that the following fuses and fusible link are not blown.
Is the fuse blown?
YES >> Replace the blown fuse or fusible link after repairing the affected circuit.
NO >> GO TO 2
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM harness connector and ground.
Is the measurement value normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3. CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
Does continuity exist?
YES >> INSPECTION END
NO >> Repair or replace harness.
Terminal No. Signal nameFuses and fusible link No.
57 Battery power supply 22 (15A)
70 F (50A)
11 Ignition ACC or ON 4 (10A)
38 Ignition ON or START 59 (10A)
ConnectorTe r m i n a l s
Power
source Condition Voltage (V) (Ap-
prox.)
(+) (-)
M18 11 Ground
ACC
power
supply Ignition
switch
ACC or
ON Battery voltage
38 Ground Ignition
power
supply Ignition
switch ON or START Battery voltage
M20 57 Ground
Battery
power
supply Ignition
switch OFF Battery voltage
70 Ground Battery
power
supply Ignition
switch
OFF Battery voltage
LIIA2415E
BCM
GroundContinuity
Connector Terminal
M20 67 Yes
LIIA0915E
Revision: March 2010 2008 QX56

BCS
BCM (BODY CONTROL MODULE)BCS-41
< ECU DIAGNOSIS > [BCM]
C
D
E
F
G H
I
J
K L
B A
O P
N
Te r m i n a l
Wire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or condition
1BR/W Ignition keyhole illumi-
nation Output OFFDoor is locked (SW OFF)
Battery voltage
Door is unlocked (SW ON) 0V
2SB Combination switch
input 5 Input ON
Lighting, turn, wiper OFF
Wiper dial position 4
3G/Y Combination switch
input 4 Input ONLighting, turn, wiper OFF
Wiper dial position 4
4Y Combination switch
input 3 Input ON
Lighting, turn, wiper OFF
Wiper dial position 4
5G/B Combination switch
input 2
Input ONLighting, turn, wiper OFF
Wiper dial position 4
6V Combination switch
input 1
9GR/R Rear window defogger
switch
Input ONRear window defogger switch
ON
0V
Rear window defogger switch
OFF 5V
10 G Hazard lamp flash Input OFF ON (opening or closing)
0V
OFF (other than above) Battery voltage
11 O Ignition switch (ACC
or ON)
InputACC or
ON Ignition switch ACC or ON
Battery voltage
12 R/L Front door switch RH Input OFF ON (open)
0V
OFF (closed) Battery voltage
13 GR Rear door switch RH Input OFF ON (open)
0V
OFF (closed) Battery voltage
15 L/W Tire pressure warning
check connector
Input OFF
—5V
18 P Remote keyless entry
receiver and optical
sensor (ground)
Output OFF
—0V
SKIA5291E
SKIA5292E
SKIA5291E
SKIA5292E
Revision: March 2010 2008 QX56

BCS-42
< ECU DIAGNOSIS >[BCM]
BCM (BODY CONTROL MODULE)
19 V/WRemote keyless entry
receiver (power sup-
ply) Output OFF Ignition switch OFF
20 G/W Remote keyless entry
receiver (signal) Input OFFStand-by (keyfob buttons re-
leased)
When remote keyless entry
receiver receives signal from
keyfob (keyfob buttons
pressed)
21 G NATS antenna amp. Input OFF
→
ON Ignition switch (OFF
→ ON)Just after turning ignition switch
ON: Pointer of tester should
move for approx. 1 second, then return to battery voltage.
22 W/V BUS — —Ignition switch ON or power
window timer operates
23 G/O Security indicator
lamp Output OFF
Goes OFF
→ illuminates (Ev-
ery 2.4 seconds) Battery voltage
→ 0V
25 BR NATS antenna amp. Input OFF
→
ON Ignition switch (OFF
→ ON)Just after turning ignition switch
ON: Pointer of tester should
move for approx. 1 second, then return to battery voltage.
26 Y/L Rear wiper auto stop
switch 2 Input ONRise up position (rear wiper
arm on stopper)
0V
A Position (full clockwise stop
position) 0V
Forward sweep (counterclock-
wise direction) Fluctuating
B Position (full counterclock-
wise stop position) Battery voltage
Reverse sweep (clockwise di-
rection) Fluctuating
27 W/R Compressor ON sig-
nal Input ONA/C switch OFF
5V
A/C switch ON 0V
Te r m i n a l
Wire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or condition
LIIA1893E
LIIA1894E
LIIA1895E
PIIA2344E
Revision: March 2010
2008 QX56