Nissan Tiida C11. Instruction — part 1207
SRC-56
< COMPONENT DIAGNOSIS >
SEAT BELT WARNING LAMP CONTROL UNIT
3.
Check voltage between seat belt warning lamp control unit har-
ness connector B51 terminals 21, 22 and ground.
Are inspection results normal?
YES
>> GO TO 2.
NO
>> Replace seat belt warning lamp control unit.
2.
CHECK HARNESS BETWEEN SEAT BELT WARNING LAMP CONTROL UNIT AND SEAT BELT BUCKLE
SWITCH
1.
Turn ignition switch OFF.
2.
Disconnect the seat belt warning lamp control unit harness connector and the seat belt buckle switch har-
ness connector.
3.
Check continuity between seat belt warning lamp control unit
harness connector B51 (A) terminals 21, 22 and seat belt buckle
switch harness connector B9, B10 (B) terminal 1.
Also check harness for short to ground and short to power.
Are inspection results normal?
YES
>> GO TO 3.
NO
>> Repair or replace damaged parts.
3.
CHECK SEAT BELT BUCKLE SWITCH GROUND CIRCUIT
Check continuity between seat belt buckle switch harness connector
B9, B10 terminal 2 and ground.
Is inspection result normal?
YES
>> GO TO 4.
NO
>> Repair open circuit in harness or connectors.
4.
CHECK SEAT BELT BUCKLE SWITCH
Fasten and unfasten the seat belt buckle switch and check continuity
between seat belt buckle switch terminals 1 and 2.
Are inspection results normal?
YES
>> GO TO 5.
NO
>> Replace seat belt buckle switch. Refer to
.
5.
CHECK SEAT BELT WARNING LAMP CONTROL UNIT
Check seat belt warning lamp control unit input/output signals. Refer to
.
Are inspection results normal?
YES
>> Inspection End.
Connector
Terminals
Voltage
B51
21 - Ground
Battery voltage
22 - Ground
AWHIA0023ZZ
Continuity should exist.
AWHIA0024ZZ
Continuity should exist.
AWHIA0025ZZ
Terminal
Condition
Continuity
1 - 2
Fastened
No
Unfastened
Yes
AWHIA0026ZZ
SEAT BELT WARNING LAMP CONTROL UNIT
SRC-57
< COMPONENT DIAGNOSIS >
C
D
E
F
G
I
J
K
L
M
A
B
SRC
N
O
P
NO
>> Check seat belt warning lamp control unit pin terminals for damage or loose connections. If any
items are damaged, repair or replace damaged parts. If not damaged, replace seat belt warning
lamp control unit.
SRC-58
< ECU DIAGNOSIS >
DIAGNOSIS SENSOR UNIT
ECU DIAGNOSIS
DIAGNOSIS SENSOR UNIT
Reference Value
INFOID:0000000001726678
SEAT BELT WARNING LAMP CONTROL UNIT HARNESS TERMINAL LAYOUT
TERMINALS AND REFERENCE VALUES FOR SEAT BELT WARNING LAMP CONTROL UNIT
AWHIA0027ZZ
Terminal
(color)
Item
Condition
Reference value (V)
(Approx.)
Ignition
switch
Operation
1 (V)
Battery power
—
—
Battery voltage
8 (O)
Driver seat belt warn-
ing lamp output
ON
—
0
15 (BR)
Passenger seat belt
warning lamp output
ON
—
0
16 (BR)
Ground
—
—
—
17 (O)
Ignition power
ON
—
Battery voltage
21 (O)
Driver seat belt buck-
le switch input
ON
Driver seat belt fastened
12
22 (LG)
Passenger seat belt
buckle switch input
ON
Passenger seat belt fastened
12
36 (V)
Vehicle speed signal
(2-pulse)
ON
Speedometer operated
[When vehicle speed is approx. 40 km/h (25
MPH)]
NOTE:
Maximum voltage may be 5V due to
specifications (connected units).
PKIC0642E
DIAGNOSIS SENSOR UNIT
SRC-59
< ECU DIAGNOSIS >
C
D
E
F
G
I
J
K
L
M
A
B
SRC
N
O
P
Wiring Diagram — RHD Models —
INFOID:0000000001396410
ALHWA0008GB
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