Infiniti QX56 (JA60). Manual — part 1004
WCS-14
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (BCM)
DIAGNOSIS SYSTEM (BCM)
BUZZER
BUZZER : CONSULT-III Function (BCM - BUZZER)
INFOID:0000000005382325
DATA MONITOR
ACTIVE TEST
Monitor Item
[Unit]
Description
IGN ON SW [ON/OFF]
Ignition switch (ON) status judged by ignition power supply input
KEY ON SW [ON/OFF]
Key switch status
DOOR SW -DR [ON/OFF]
Front door switch (driver side) status judged by BCM
LIGHT SW 1ST [ON/OFF]
Lighting switch status judged by the lighting switch signal read with combination switch reading func-
tion
BUCKLE SW [ON/OFF]
Seat belt buckle switch status
Test Item
Description
LIGHT WARN ALM
The light reminder warning operation can be checked by operating the relevant function (On/Off).
IGN KEY WARN ALM
The key reminder warning operation can be checked by operating the relevant function (On/Off).
SEAT BELT WARN TEST
The seat belt warning operation can be checked by operating the relevant function (On/Off).
DOOR WARNING IND
The door open warning operation can be checked by operating the relevant function (On/Off).
W C S
POWER SUPPLY AND GROUND CIRCUIT
WCS-15
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
COMPONENT DIAGNOSIS
POWER SUPPLY AND GROUND CIRCUIT
COMBINATION METER
COMBINATION METER : Diagnosis Procedure
INFOID:0000000005382371
Regarding Wiring Diagram information, refer to
.
1.
CHECK FUSES
Check for blown combination meter fuses.
Is the inspection result normal?
YES
>> GO TO 2
NO
>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2.
POWER SUPPLY CIRCUIT CHECK
1. Disconnect combination meter connector M24.
2. Check voltage between combination meter harness connector
M24 terminals 21, 37, 40 and ground.
Is the inspection result normal?
YES
>> GO TO 3
NO
>> Check harness for open between combination meter and fuse.
3.
GROUND CIRCUIT CHECK
1. Turn ignition switch OFF.
2. Disconnect combination meter connector M23.
3. Check continuity between combination meter harness connector
M23 terminal 47, 52 and ground, and connector M24 terminal 20
and ground.
Unit
Power source
Fuse No.
Combination meter
Battery 3
Ignition switch ON or START
14
Ignition switch ACC or ON
4
Terminals
Ignition switch position
(+)
(–)
OFF
ACC
ON
START
Connector
Terminal
M24
21
Ground
0V
0V
Battery
voltage
Battery
voltage
37
0V
Battery
voltage
Battery
voltage
0V
40
Battery
voltage
Battery
voltage
Battery
voltage
Battery
voltage
AWNIA0204ZZ
Terminals
Continuity
(+)
(–)
Connector
Terminal
A: M23
47
Ground
Yes
52
B: M24
20
AWNIA0205ZZ
WCS-16
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Check ground harness.
BCM (BODY CONTROL MODULE)
BCM (BODY CONTROL MODULE) : Diagnosis Procedure
INFOID:0000000005382372
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
WCS
POWER SUPPLY AND GROUND CIRCUIT
WCS-17
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
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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