Infiniti QX56 (JA60). Manual — part 1005
WCS-18
< COMPONENT DIAGNOSIS >
METER BUZZER CIRCUIT
METER BUZZER CIRCUIT
Description
INFOID:0000000005146155
• The buzzer for warning chime system is installed in the combination meter.
• The combination meter sounds the alarm buzzer based on the signals transmitted from various units.
Component Function Check
INFOID:0000000005146156
1.
CHECK OPERATION OF METER BUZZER
1. Select “BUZZER” of “BCM” on CONSULT-III.
2. Perform “LIGHT WARN ALM” of “ACTIVE TEST”.
Does meter buzzer activate?
YES
>> Inspection End.
NO
>> Replace combination meter. Refer to
MWI-100, "Removal and Installation"
Diagnosis Procedure
INFOID:0000000005146157
1.
CHECK POWER SUPPLY OF COMBINATION METER
Check power supply of combination meter. Refer to
MWI-28, "COMBINATION METER : Diagnosis Proce-
.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Repair power supply circuit of combination meter.
WCS
SEAT BELT BUCKLE SWITCH SIGNAL CIRCUIT
WCS-19
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
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B
A
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SEAT BELT BUCKLE SWITCH SIGNAL CIRCUIT
Description
INFOID:0000000005146158
Transmits a seat belt buckle switch signal to the combination meter.
Component Function Check
INFOID:0000000005146159
1.
CHECK COMBINATION METER INPUT SIGNAL
Select “DATA MONITOR” for “METER/M&A” and check the “SEAT BELT W/L” monitor value.
>> Inspection End.
Diagnosis Procedure
INFOID:0000000005146160
Regarding Wiring Diagram information, refer to
.
1.
CHECK COMBINATION METER INPUT SIGNAL
1. Turn ignition switch ON.
2. Check voltage between combination meter harness connector
M24 terminal 24 and ground.
Is the inspection result normal?
YES
>> Replace combination meter. Refer to
.
NO
>> GO TO 2
2.
CHECK SEAT BELT BUCKLE SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect combination meter connector and seat belt buckle
pre-tensioner assembly LH (seat belt buckle switch) connector.
3. Check continuity between combination meter harness connector
M24 (B) terminal 24 and seat belt buckle pre-tensioner assem-
bly LH (seat belt buckle switch) harness connector B74 (A) ter-
minal 4.
4. Check continuity between combination meter harness connector
M24 (B) terminal 24 and ground.
Is the inspection result normal?
YES
>> GO TO 3
NO
>> Repair harness or connector.
3.
CHECK SEAT BELT BUCKLE SWITCH GROUND CIRCUIT
SEAT BELT W/L
When seat belt is fastened
: OFF
When seat belt is unfastened : ON
24 - Ground
When driver seat belt is fastened
: Approx. 12V
When driver seat belt is unfastened : Approx. 0V
AWNIA0212ZZ
24 - 4
: Continuity should exist.
24 - Ground
: Continuity should not exist.
AWNIA0213ZZ
WCS-20
< COMPONENT DIAGNOSIS >
SEAT BELT BUCKLE SWITCH SIGNAL CIRCUIT
Check continuity between seat belt buckle pre-tensioner assembly
LH (seat belt buckle switch) harness connector B74 terminal 3 and
ground.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Repair harness or connector.
Component Inspection
INFOID:0000000005146161
1.
CHECK SEAT BELT BUCKLE SWITCH
1. Turn ignition switch OFF.
2. Disconnect the seat belt buckle pre-tensioner assembly LH
(seat belt buckle switch) connector.
3. Check continuity between terminals 3 and 4.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Replace the seat belt buckle pre-tensioner assembly LH (seat belt buckle switch).
3 - Ground
: Continuity should exist.
AWNIA0288ZZ
3– 4
When seat belt is
fastened
: Continuity should not exist.
When seat belt is
unfastened
: Continuity should exist.
AWNIA0289ZZ
WCS
KEY SWITCH SIGNAL CIRCUIT
WCS-21
< COMPONENT DIAGNOSIS >
C
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B
A
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KEY SWITCH SIGNAL CIRCUIT
Description
INFOID:0000000005146162
Transmits a key switch signal to the BCM.
Component Function Check
INFOID:0000000005146163
1.
CHECK BCM INPUT SIGNAL
Select “DATA MONITOR” for “BCM” and check the “KEY ON SW” monitor value.
>> Inspection End.
Diagnosis Procedure
INFOID:0000000005146164
Regarding Wiring Diagram information, refer to
.
1.
CHECK FUSE
Check if the key switch and ignition knob switch 10A fuse (No. 62, located in the fuse and relay box) is blown.
Is the fuse blown?
YES
>> Be sure to repair the cause of malfunction before installing new fuse.
NO
>> GO TO 2
2.
CHECK BCM INPUT SIGNAL
Check voltage between BCM harness connector and ground.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> GO TO 3
3.
CHECK KEY SWITCH CIRCUIT
1. Disconnect BCM and key switch and ignition knob switch con-
nectors.
2. Check continuity between BCM harness connector M18 and key
switch and ignition knob switch harness connector M12.
3. Check continuity between BCM harness connector M18 and
ground.
KEY ON SW
When key is inserted into key cylinder
: ON
When key is removed from key cylinder : OFF
Terminals
Condition
Voltage
(Approx.)
(+)
(
−)
BCM
connector
Terminal
M18
37
Ground
Key is inserted
Battery voltage
Key is removed
0
PKIC0721E
A
B
Continuity
Connector
Terminal
Connector
Terminal
M18
37
M12
4
Yes
AWNIA0159ZZ
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