Nissan Altima L32. Instruction — part 1538
WCS-18
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
BCM (BODY CONTROL MODULE) : Diagnosis Procedure
INFOID:0000000004501311
1.
CHECK FUSE AND FUSIBLE LINK
Check if the following BCM fuse or fusible link are blown.
Is the fuse or fusible link 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 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.
BCM (BODY CONTROL MODULE) : Special Repair Requirement
INFOID:0000000004501312
1.
REQUIRED WORK WHEN REPLACING BCM
Initialize control unit. Refer to
BCS-6, "CONFIGURATION (BCM) : Special Repair Requirement"
>> Work End.
Terminal No.
Signal name
Fuse and fusible link No.
1
Battery power supply
H
11
10
Terminals
Voltage
(Approx.)
(+)
(
−)
BCM
Ground
Connector
Terminal
M16
1
Battery voltage
M17
11
ALCIA0025ZZ
BCM
Ground
Continuity
Connector
Terminal
M17
13
Yes
ALCIA0024ZZ
WCS
METER BUZZER CIRCUIT
WCS-19
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
METER BUZZER CIRCUIT
Description
INFOID:0000000004204231
• 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:0000000004204232
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-176, "Removal and Installation"
Diagnosis Procedure
INFOID:0000000004204233
1.
CHECK POWER SUPPLY OF COMBINATION METER
Check power supply of combination meter. Refer to
MWI-43, "COMBINATION METER : Diagnosis Proce-
.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Repair or replace harness.
WCS-20
< COMPONENT DIAGNOSIS >
SEAT BELT BUCKLE SWITCH SIGNAL CIRCUIT
SEAT BELT BUCKLE SWITCH SIGNAL CIRCUIT
Description
INFOID:0000000004204234
Transmits a seat belt buckle switch signal to the combination meter.
Component Function Check
INFOID:0000000004204235
1.
CHECK COMBINATION METER INPUT SIGNAL
Select “DATA MONITOR” for “METER/M&A” and check the “BUCKLE SW” monitor value.
>> Inspection End.
Diagnosis Procedure
INFOID:0000000004204236
1.
CHECK COMBINATION METER INPUT SIGNAL
1. Turn ignition switch ON.
2. Check voltage between combination meter harness connector
M24 terminal 35 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 and seat belt buckle switch LH.
3. Check continuity between combination meter harness connector
M24 terminal 35 and seat belt buckle switch LH harness con-
nector B202 terminal 1.
4. Check harness continuity between combination meter harness
connector M24 terminal 35 and ground.
Is the inspection result normal?
YES
>> GO TO 3
NO
>> Repair or replace harness.
3.
CHECK SEAT BELT BUCKLE SWITCH GROUND CIRCUIT
BUCKLE SW
When seat belt is fastened
: OFF
When seat belt is unfastened : ON
35 - Ground
When driver seat belt is fastened
: Approx. 12V
When driver seat belt is unfastened : Approx. 0V
AWNIA0085ZZ
35 - 1
: Continuity should exist.
35 - Ground
: Continuity should not exist.
AWNIA0086ZZ
WCS
SEAT BELT BUCKLE SWITCH SIGNAL CIRCUIT
WCS-21
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
Check harness continuity between seat belt buckle switch LH har-
ness connector B202 terminal 2 and ground.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Repair or replace harness.
Component Inspection
INFOID:0000000004204237
1.
CHECK SEAT BELT BUCKLE SWITCH
1. Turn ignition switch OFF.
2. Disconnect the seat belt buckle switch.
3. Check continuity between terminals 1 and 2.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Replace the seat belt buckle switch LH.
2 - Ground
: Continuity should exist.
AWNIA0087ZZ
1– 2
When seat belt is
fastened
: Continuity should not exist.
When seat belt is
unfastened
: Continuity should exist.
WKIA1143E
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