Infiniti G37 Coupe. Manual — part 1094
SE-44
< COMPONENT DIAGNOSIS >
FORWARD SWITCH
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-38, "Intermittent Incident"
.
NO
>> GO TO 2.
2.
CHECK FORWARD SWITCH CIRCUIT
1.
Disconnect passenger seat control unit connector and forward switch connector.
2.
Check continuity between passenger seat control unit harness connector and forward switch harness con-
nector.
3.
Check continuity between passenger seat control unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace harness.
3.
FORWARD SWITCH GROUND CIRCUIT
Check continuity between forward switch harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace harness.
4.
CHECK PASSENGER SEAT CONTROL UNIT OUTPUT
1.
Connect passenger seat control unit connector.
2.
Check voltage between passenger seat control unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace passenger seat control unit. Refer to
SE-165, "Removal and Installation"
.
5.
CHECK FORWARD SWITCH
SE-45, "PASSENGER SIDE : Component Inspection"
Passenger seat control unit
Ground
Condition
Voltage (V)
(Approx.)
Connector
Terminal
B553
41
Ground
Seat back is folded down and
power walk-in switch is pressed.
0
Seat back is folded up and power
walk-in switch is pressed.
5
Seat back is folded up and seat
reclining switch is operated.
Battery voltage
Passenger seat control unit
Forward switch
Continuity
Connector
Terminal
Connector
Terminal
B553
41
B556
41
Existed
Passenger seat control unit
Ground
Continuity
Connector
Terminal
B553
41
Ground
Not existed
Forward switch
Ground
Continuity
Connector
Terminal
B556
32
Ground
Existed
Passenger seat control unit
Ground
Voltage (V)
(Approx.)
Connector
Terminal
B553
41
Ground
5
FORWARD SWITCH
SE-45
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
K
L
M
A
B
SE
N
O
P
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-38, "Intermittent Incident"
.
NO
>> Replace forward switch. (Built in seat back frame.)
PASSENGER SIDE : Component Inspection
INFOID:0000000001770918
1.
CHECK FORWARD SWITCH
1.
Turn ignition switch OFF.
2.
Disconnect forward switch connector.
3.
Check continuity between forward switch terminals.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace forward switch. (Built in seat back frame.)
Forward switch
Condition
Continuity
Terminal
41
32
Passenger side
seat back
Folded up
Not existed
Folded down
Existed
SE-46
< COMPONENT DIAGNOSIS >
SEAT BELT BUCKLE SWITCH
SEAT BELT BUCKLE SWITCH
DRIVER SIDE
DRIVER SIDE : Description
INFOID:0000000001766494
Seat belt buckle switch is installed in seat belt buckle. Seat belt buckle switch detects condition of seat belt.
DRIVER SIDE : Component Function Check
INFOID:0000000001766495
1.
CHECK FUNCTION
1.
Select “SEAT BELT SW” in “Data Monitor” mode with CONSULT-III.
2.
Check the forward switch signal under the following condition.
Is the indication normal?
YES
>> INSPECTION END
NO
>> Refer to
SE-46, "DRIVER SIDE : Diagnosis Procedure"
.
DRIVER SIDE : Diagnosis Procedure
INFOID:0000000001766496
1.
CHECK SEAT BELT BUCKLE SWITCH SIGNAL
1.
Turn ignition switch OFF.
2.
Check voltage between driver seat control unit harness connector and ground.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-38, "Intermittent Incident"
.
NO
>> GO TO 2.
2.
CHECK SEAT BELT BUCKLE SWITCH CIRCUIT
1.
Disconnect driver seat control unit connector and seat belt buckle switch connector.
2.
Check continuity between driver seat control unit harness connector and seat belt buckle switch harness
connector.
3.
Check continuity between driver seat control unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace harness.
3.
CHECK SEAT BELT BUCKLE SWITCH GROUND CIRCUIT
Check continuity between seat belt buckle switch harness connector and ground.
Test item
Condition
Status
SEAT BELT SW
Driver side seat belt
Fastened
ON
Released
OFF
Driver seat control unit
Ground
Condition
Voltage (V)
(Approx.)
Connector
Terminal
B503
5
Ground
Passenger side seat belt is fastened,
and power walk-in switch is pressed.
5
Released
0
Driver seat control unit
Seat belt buckle switch
Continuity
Connector
Terminal
Connector
Terminal
B503
5
B13
1
Existed
Driver seat control unit
Ground
Continuity
Connector
Terminal
B503
5
Ground
Not existed
SEAT BELT BUCKLE SWITCH
SE-47
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
K
L
M
A
B
SE
N
O
P
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace harness.
4.
CHECK DRIVER SEAT CONTROL UNIT OUTPUT
1.
Connect driver seat control unit connector.
2.
Check voltage between driver seat control unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace driver seat control unit. Refer to
SE-164, "Removal and Installation"
5.
CHECK SEAT BELT BUCKLE SWITCH
SE-47, "DRIVER SIDE : Component Inspection"
.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-38, "Intermittent Incident"
.
NO
>> Replace seat belt buckle switch. (Built in seat belt buckle.)
DRIVER SIDE : Component Inspection
INFOID:0000000001766497
1.
CHECK SEAT BELT BUCKLE SWITCH
1.
Turn ignition switch OFF.
2.
Disconnect seat belt buckle switch connector.
3.
Check continuity between seat belt buckle switch terminals.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace seat belt buckle switch. (Built in seat belt buckle.)
PASSENGER SIDE
PASSENGER SIDE : Description
INFOID:0000000001831182
Seat belt buckle switch is installed in seat belt buckle. Seat belt buckle switch detects condition of seat belt.
PASSENGER SIDE : Diagnosis Procedure
INFOID:0000000001770921
1.
CHECK SEAT BELT BUCKLE SWITCH SIGNAL
1.
Turn ignition switch OFF.
2.
Check voltage between passenger seat control unit harness connector and ground.
Seat belt buckle switch
Ground
Continuity
Connector
Terminal
B13
2
Ground
Existed
Driver seat control unit
Ground
Voltage (V)
(Approx.)
Connector
Terminal
B503
5
Ground
5
Seat belt buckle switch
Condition
Continuity
Terminal
1
2
Driver side seat
belt
Fastened
Not existed
Released
Existed
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