Infiniti QX56 (JA60). Manual — part 103
BCS
DIAGNOSIS SYSTEM (BCM)
BCS-31
< FUNCTION DIAGNOSIS >
[BCM]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
ACTIVE TEST
PANIC ALARM
PANIC ALARM : CONSULT-III Function (BCM - PANIC ALARM)
INFOID:0000000005370265
ACTIVE TEST
DOOR SW-DR [ON/OFF]
Indicates switch status input from front door switch LH
DOOR SW-AS [ON/OFF]
Indicates switch status input from front door switch RH
DOOR SW-RR [ON/OFF]
Indicates switch status input from rear door switch RH
DOOR SW-RL [ON/OFF]
Indicates switch status input from rear door switch LH
BACK DOOR SW [ON/OFF]
Indicates switch status input from back door switch
KEY CYL LK-SW [ON/OFF]
Indicates lock switch status from door key cylinder switch
KEY CYL UN-SW [ON/OFF]
Indicates unlock switch status from door key cylinder switch
CDL LOCK SW [ON/OFF]
Indicates lock switch status from door lock and unlock switch
CDL UNLOCK SW [ON/OFF]
Indicates unlock switch status from door lock and unlock switch
Monitor Item
[Unit]
Description
Test Item
Description
THEFT IND
This test is able to check security indicator lamp operation. The lamp will be turned on when “ON”
on CONSULT-III screen is touched.
VEHICLE SECURITY HORN
This test is able to check vehicle security horn operation. The horns will be activated for 0.5 sec-
onds after “ON” on CONSULT-III screen is touched.
HEADLAMP(HI)
This test is able to check vehicle security lamp operation. The headlamps will be activated for 0.5
seconds after “ON” on CONSULT-III screen is touched.
Test Item
Description
HEAD LAMP (HI)
This test is able to check head lamp (HI) operation.
PANIC ALARM
This test is able to check panic alarm operation.
BCS-32
< COMPONENT DIAGNOSIS >
[BCM]
U1000 CAN COMM CIRCUIT
COMPONENT DIAGNOSIS
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000005146415
LAN-44, "CAN Communication Signal Chart"
DTC Logic
INFOID:0000000005146416
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000005146417
1.
PERFORM SELF DIAGNOSTIC
1. Turn ignition switch ON and wait for 2 seconds or more.
2. Check “Self Diagnostic Result” of BCM.
Is “CAN COMM CIRCUIT” displayed?
YES
>> Refer to
LAN-14, "Trouble Diagnosis Flow Chart"
NO
>> Refer to
GI-38, "Intermittent Incident"
.
DTC
CONSULT-III display
description
DTC Detection Condition
Possible cause
U1000
CAN COMM CIRCUIT
When BCM cannot communicate CAN com-
munication signal continuously for 2 sec-
onds or more.
Any item (or items) of the following listed below is
malfunctioning in CAN communication system.
• Transmission
• Receiving (ECM)
• Receiving (METER/M&A)
• Receiving (TCM)
• Receiving (MULTI AV)
• Receiving (IPDM E/R)
• Receiving (I-KEY)
BCS
POWER SUPPLY AND GROUND CIRCUIT
BCS-33
< COMPONENT DIAGNOSIS >
[BCM]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
POWER SUPPLY AND GROUND CIRCUIT
Diagnosis Procedure
INFOID:0000000005146421
Regarding Wiring Diagram information, refer to
.
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
Terminal No.
Signal name
Fuses 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)
Connector
Terminals
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
BCS-34
< COMPONENT DIAGNOSIS >
[BCM]
POWER SUPPLY AND GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
Does continuity exist?
YES
>> Inspection End.
NO
>> Repair or replace harness.
BCM
Ground
Continuity
Connector
Terminal
M20
67
Yes
LIIA0915E
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