Infiniti G37 Coupe. Manual — part 656
EXL-44
< COMPONENT DIAGNOSIS >
[XENON TYPE]
B2503, B2504 SWIVEL ACTUATOR
Does continuity exist?
YES
>> GO TO 4.
NO
>> Repair the harnesses or connectors.
4.
CHECK SWIVEL MOTOR SHORT CIRCUIT
Check continuity between the AFS control unit harness connector and the ground.
Does continuity exist?
YES
>> Repair the harnesses or connectors.
NO
>> GO TO 5.
5.
CHECK SWIVEL MOTOR CIRCUIT VOLTAGE OUTOPUT
1.
Connect AFS control unit connector.
2.
Turn the ignition switch ON.
3.
Check the voltage between the AFS control unit harness connector and the ground.
RH
M16
11
E29
8
Existed
13
7
32
3
34
4
LH
M16
15
E59
3
17
4
36
8
38
7
Terminals
Continuity
(+)
(
−
)
AFS control unit
Ground
Connector
Terminal
RH
M16
11
Not existed
13
32
34
LH
M16
15
17
36
38
Terminals
Voltage
(Approx.)
(+)
(
−
)
AFS control unit
Ground
Connector
Terminal
RH
M16
11
9.5 - 11.5 V
13
32
34
LH
M16
15
17
36
38
B2503, B2504 SWIVEL ACTUATOR
EXL-45
< COMPONENT DIAGNOSIS >
[XENON TYPE]
C
D
E
F
G
H
I
J
K
M
A
B
EXL
N
O
P
Is the measurement value within the standard value?
YES
>> Replace the front combination lamp.
NO
>> Replace AFS control unit.
6.
CHECK SWIVEL POSITION SENSOR SIGNAL OUTPUT
Check the voltage between the AFS control unit harness connector and the ground.
Is the measurement value normal?
YES
>> GO TO 7.
NO
>> GO TO 9.
7.
CHECK SWIVEL POSITION SENSOR POWER SUPPLY CIRCUIT INPUT VOLTAGE
1.
Turn the ignition switch OFF.
2.
Disconnect the headlamp swivel actuator connector.
3.
Turn the ignition switch ON.
4.
Check the voltage between the headlamp swivel actuator harness connector and the ground.
Is the measurement value normal?
YES
>> GO TO 8.
NO
>> Repair the harnesses or connectors.
8.
CHECK SWIVEL POSITION SENSOR SIGNAL SHORT CIRCUIT
1.
Turn the ignition switch OFF.
2.
Disconnect AFS control unit connector.
3.
Check continuity between the AFS control unit harness connector and the headlamp swivel actuator har-
ness connector.
Does continuity exist?
YES
>> Replace the front combination lamp.
NO
>> Repair the harnesses or connectors.
9.
CHECK SWIVEL POSITION SENSOR GROUND CIRCUIT VOLTAGE OUTPUT
Check the voltage between the AFS control unit harness connector and the ground.
Terminals
Voltage
(Approx.)
(+)
(
−
)
AFS control unit
Ground
Connector
Terminal
RH
M16
4
5 V
LH
24
Terminals
Voltage
(Approx.)
(+)
(
−
)
Headlamp swivel actuator
Ground
Connector
Terminal
RH
E29
2
5 V
LH
E59
2
AFS control unit
Headlamp swivel actua-
tor
Continuity
Connector
Terminal
Connector
Terminal
RH
M16
9
E29
1
Existed
LH
29
E59
1
EXL-46
< COMPONENT DIAGNOSIS >
[XENON TYPE]
B2503, B2504 SWIVEL ACTUATOR
Is the measurement value normal?
YES
>> GO TO 10.
NO
>> Replace AFS control unit.
10.
CHECK SWIVEL POSITION SENSOR SHORT GROUND CIRCUIT
1.
Turn the ignition switch OFF.
2.
Disconnect AFS control unit connector and the headlamp swivel actuator connector.
3.
Check continuity between the AFS control unit harness connector and the headlamp swivel actuator har-
ness connector.
Does continuity exist?
YES
>> Replace the front combination lamp.
NO
>> Repair the harnesses or connectors.
Component Inspection
INFOID:0000000001604622
1.
CHECK SWIVEL MOTOR SINGLE PART
1.
Disconnect the swivel actuator connector.
2.
Check the resistance among each swivel actuator connector terminal.
Is the measurement value normal?
YES
>> Swivel actuator is normal.
NO
>> Replace the front combination lamp.
Terminals
Voltage
(Approx.)
(+)
(
−
)
AFS control unit
Ground
Connector
Terminal
RH
M16
2
0 V
LH
27
AFS control unit
Headlamp swivel actua-
tor
Continuity
Connector
Terminal
Connector
Terminal
RH
M16
2
E29
6
Existed
LH
27
E59
6
Swivel actuator
Resistance
(Approx.)
Terminal
Terminal
3
7
7.2
Ω
4
8
7.2
Ω
3
4
10 M
Ω
or more
B2514 HEIGHT SENSOR UNUSUAL [RR]
EXL-47
< COMPONENT DIAGNOSIS >
[XENON TYPE]
C
D
E
F
G
H
I
J
K
M
A
B
EXL
N
O
P
B2514 HEIGHT SENSOR UNUSUAL [RR]
Description
INFOID:0000000001604623
The height sensor is installed to the rear suspension arm. The height sensor detects the suspension arm dis-
placement as the vehicle height change. The height sensor transmits the height sensor signal to AFS control
unit.
NOTE:
The sensor angle of the unloaded vehicle position is the reference value.
DTC Logic
INFOID:0000000001604624
DTC DETECTION LOGIC
[B2514] Height sensor unusual [RR]
DTC CONFIRMATION PROCEDURE
1.
DTC ERASE
Erase the DTC memory of AFS with CONSULT-III.
>> GO TO 2.
2.
DTC CONFIRMATION
1.
Start the engine.
2.
Turn the headlamp ON.
3.
Select the self-diagnosis with CONSULT-III.
Is "B2514" detected?
YES
>> Refer to
.
NO
>> Refer to
GI-38, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000001604625
1.
CHECK HEIGHT SENSOR POWER SUPPLY OUTPUT
1.
Turn the ignition switch ON.
2.
Check the voltage between the AFS control unit harness connector and the ground.
Is the measurement value within the standard value?
YES
>> GO TO 2.
NO
>> Replace AFS control unit.
2.
CHECK HEIGHT SENSOR POWER SUPPLY INPUT
Check the voltage between the AFS control unit harness connector and the ground.
DTC detection condition
DTC erase condition
Possible cause
An applicable DTC is indicated when any of the following
conditions is detected continuously for 2 seconds or more.
• The height sensor power supply is 6 V or more, or 4 V or
less.
• The height sensor signal is 0.25 V or less, or 4.75 V or
more.
Ignition switch OFF
Height sensor
• Height sensor
• Harness and connector
• AFS control unit
Terminals
Voltage
(Approx.)
(+)
(
−
)
AFS control unit
Ground
Connector
Terminal
M16
6
4 - 6 V
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