2008 INFINITI QX56 Factory Service Manual

brake pads tow bar gas tank size navigation system trunk release lock

Page 393 of 4083

INFINITI QX56 2008 Factory Service Manual 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 sw

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

Page 394 of 4083

INFINITI QX56 2008 Factory Service Manual BCS
DIAGNOSIS SYSTEM (BCM)BCS-29
< FUNCTION DIAGNOSIS > [BCM]
C
D
E
F
G H
I
J
K L
B A
O P
N
ID Read
The registered ID number is displayed.
ID Regist
Refer to
WT-6, "ID Registration Procedure".
SELF-D

Page 395 of 4083

INFINITI QX56 2008 Factory Service Manual BCS-30
< COMPONENT DIAGNOSIS >[BCM]
U1000 CAN COMM CIRCUIT
COMPONENT DIAGNOSIS
U1000 CAN COMM CIRCUIT
DescriptionINFOID:0000000001696433
Refer to
LAN-44, "CAN Communication Signal Chart".
DTC LogicIN

Page 396 of 4083

INFINITI QX56 2008 Factory Service Manual BCS
U1010 CONTROL UNIT (CAN)BCS-31
< COMPONENT DIAGNOSIS > [BCM]
C
D
E
F
G H
I
J
K L
B A
O P
N
U1010 CONTROL UNIT (CAN)
DTC LogicINFOID:0000000001696436
DTC DETECTION LOGIC
Diagnosis ProcedureINFOID:0

Page 397 of 4083

INFINITI QX56 2008 Factory Service Manual 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

Page 398 of 4083

INFINITI QX56 2008 Factory Service Manual BCS
COMBINATION SWITCH INPUT CIRCUITBCS-33
< COMPONENT DIAGNOSIS > [BCM]
C
D
E
F
G H
I
J
K L
B A
O P
N
COMBINATION SWITCH
INPUT CIRCUIT
Diagnosis ProcedureINFOID:0000000001696440
1. CHECK INPUT 1 - 5

Page 399 of 4083

INFINITI QX56 2008 Factory Service Manual BCS-34
< COMPONENT DIAGNOSIS >[BCM]
COMBINATION SWITCH INPUT CIRCUIT
YES >> GO TO 4
NO >> Replace BCM. Refer to
BCS-55, "
Removal and Installation".
4. CHECK COMBINATION SWITCH
Check combination swit

Page 400 of 4083

INFINITI QX56 2008 Factory Service Manual BCS
COMBINATION SWITCH OUTPUT CIRCUITBCS-35
< COMPONENT DIAGNOSIS > [BCM]
C
D
E
F
G H
I
J
K L
B A
O P
N
COMBINATION SWITCH
OUTPUT CIRCUIT
Diagnosis ProcedureINFOID:0000000001696442
1. CHECK OUTPUT 1

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