2011 INFINITI QX56 Factory Service Manual

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Page 2777 of 5598

INFINITI QX56 2011 Factory Service Manual
B2503, B2504 SWIVEL ACTUATOREXL-67
< DTC/CIRCUIT DIAGNOSIS > [XENON TYPE]
C
D
E
F
G H
I
J
K
M A
B
EXL
N
O P
Is the inspection result normal?
YES >> GO TO 10.
NO >> Replace AFS control unit. Refer to

Page 2778 of 5598

INFINITI QX56 2011 Factory Service Manual
EXL-68
< DTC/CIRCUIT DIAGNOSIS >[XENON TYPE]
B2513 HEIGHT SENSOR UNUSUAL [FR]
B2513 HEIGHT SENSOR UNUSUAL [FR]
DTC LogicINFOID:0000000006213932
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.DTC ER

Page 2779 of 5598

INFINITI QX56 2011 Factory Service Manual
B2513 HEIGHT SENSOR UNUSUAL [FR]EXL-69
< DTC/CIRCUIT DIAGNOSIS > [XENON TYPE]
C
D
E
F
G H
I
J
K
M A
B
EXL
N
O P
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 4.
3.CHECK HEIGHT SENSOR S

B2513 HEIGHT SENSOR UNUSUAL [FR]EXL-69
< DTC/CIRCUIT DIAGNOSIS > [XENON TYPE]
C
D
E
F
G H
I
J
K
M A
B
EXL
N
O P
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 4.
3.CHECK HEIGHT SENSOR SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect AFS control unit connector.
3. Check continuity between AFS control unit harnes s connector and front height sensor harness connector.
4. Check continuity between AFS control unit harness connector and ground.
Is the inspection result normal?
YES >> Replace front height sensor. Refer to EXL-136, "Removal and Installation".
NO >> Repair or replace harness.
4.CHECK HEIGHT SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect AFS control unit connector.
3. Check continuity between AFS control unit harnes s connector and front height sensor harness connector.
4. Check continuity between AFS control unit harness connector and ground.
Is the inspection result normal?
YES >> Replace AFS control unit. Refer to EXL-135, "Removal and Installation"
NO >> Repair or replace harness.
5.CHECK HEIGHT SENSOR GROUND CIRCUIT VOLTAGE OUTPUT
Check voltage between AFS control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 6.
NO >> Replace AFS control unit. Refer to EXL-135, "
Removal and Installation"
6.CHECK HEIGHT SENSOR GROUND OPEN CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect AFS control unit connecto r and front height sensor connector.
3. Check continuity between AFS control unit harnes s connector and front height sensor harness connector.
AFS control unit Front height sensor
Continuity
Connector Terminal Connector Terminal
M135 23 E208 2 Existed
AFS control unit GroundContinuity
Connector Terminal
M135 23 Not existed
AFS control unit Front height sensor Continuity
Connector Terminal Connector Terminal
M135 5 E208 1 Existed
AFS control unit GroundContinuity
Connector Terminal
M135 5 Not existed
(+) (− ) Vol tag e
(Approx.)
AFS control unit
Connector Terminal M135 10 Ground 0 V
Revision: 2010 May2011 QX56

Page 2780 of 5598

INFINITI QX56 2011 Factory Service Manual
EXL-70
< DTC/CIRCUIT DIAGNOSIS >[XENON TYPE]
B2513 HEIGHT SENSOR UNUSUAL [FR]
Is the inspection result normal?
YES >> Replace front height sensor. Refer to
EXL-136, "Removal and Installation".
NO >>

Page 2781 of 5598

INFINITI QX56 2011 Factory Service Manual
B2514 HEIGHT SENSOR UNUSUAL [RR]EXL-71
< DTC/CIRCUIT DIAGNOSIS > [XENON TYPE]
C
D
E
F
G H
I
J
K
M A
B
EXL
N
O P
B2514 HEIGHT SENSOR UNUSUAL [RR]
DTC LogicINFOID:0000000006213934
DTC DETECTION LOGIC
D

Page 2782 of 5598

INFINITI QX56 2011 Factory Service Manual
EXL-72
< DTC/CIRCUIT DIAGNOSIS >[XENON TYPE]
B2514 HEIGHT SENSOR UNUSUAL [RR]
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 4.
3.CHECK HEIGHT SENSOR SIGNAL CIRCUIT
1. Turn ignition sw

Page 2783 of 5598

INFINITI QX56 2011 Factory Service Manual
B2514 HEIGHT SENSOR UNUSUAL [RR]EXL-73
< DTC/CIRCUIT DIAGNOSIS > [XENON TYPE]
C
D
E
F
G H
I
J
K
M A
B
EXL
N
O P
Is the inspection result normal?
YES >> Replace rear height sensor. Refer to EXL-136,

Page 2784 of 5598

INFINITI QX56 2011 Factory Service Manual
EXL-74
< DTC/CIRCUIT DIAGNOSIS >[XENON TYPE]
B2516 SHIFT SIGNAL [P, R]
B2516 SHIFT SIGNAL [P, R]
DTC LogicINFOID:0000000006213936
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.DTC ERASE
Erase the

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