Infiniti QX56 (Z62). Manual — part 695
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 switch OFF.
2.
Disconnect AFS control unit connector.
3.
Check continuity between AFS control unit harness connector and rear height sensor harness connector.
4.
Check continuity between AFS control unit harness connector and ground.
Is the inspection result normal?
YES
>> Replace rear 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 harness connector and rear 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 connector and rear height sensor connector.
3.
Check continuity between AFS control unit harness connector and rear height sensor harness connector.
AFS control unit
Rear height sensor
Continuity
Connector
Terminal
Connector
Terminal
M135
28
C15
2
Existed
AFS control unit
Ground
Continuity
Connector
Terminal
M135
28
Not existed
AFS control unit
Rear height sensor
Continuity
Connector
Terminal
Connector
Terminal
M135
6
C15
1
Existed
AFS control unit
Ground
Continuity
Connector
Terminal
M135
6
Not existed
(+)
(
−
)
Voltage
(Approx.)
AFS control unit
Connector
Terminal
M135
8
Ground
0 V
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, "Removal and Installation"
.
NO
>> Repair or replace harness.
AFS control unit
Rear height sensor
Continuity
Connector
Terminal
Connector
Terminal
M135
8
C15
3
Existed
EXL-74
< DTC/CIRCUIT DIAGNOSIS >
[XENON TYPE]
B2516 SHIFT SIGNAL [P, R]
B2516 SHIFT SIGNAL [P, R]
DTC Logic
INFOID:0000000006213936
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC ERASE
Erase the DTC memory of AFS with CONSULT-III.
>> GO TO 2.
2.
DTC CONFIRMATION
1.
Turn ignition ON.
2.
Select the self-diagnosis with CONSULT-III.
3.
Check the self-diagnosis result. Refer to
.
Is DTC “B2516” detected?
YES
>> Refer to
.
NO
>> Refer to
GI-40, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000006213937
1.
TCM SELF-DIAGNOSIS
Check the self-diagnosis result with CONSULT-III. Check that TCM does not detect any DTCs.
Is any DTC detected?
YES
>> Check TCM. Refer to
.
NO
>> GO TO 2.
2.
DTC ERASE
Erase the DTC memory of AFS with CONSULT-III.
Is the memory erased?
YES
>> INSPECTION END.
NO
>> Replace AFS control unit. Refer to
EXL-135, "Removal and Installation"
DTC No.
Trouble diagnosis name
DTC detection condition
Possible causes
B2516
Shift signal [P, R]
The shift position signal is not received.
• TCM
• AFS control unit
B2517 VEHICLE SPEED SIGNAL
EXL-75
< DTC/CIRCUIT DIAGNOSIS >
[XENON TYPE]
C
D
E
F
G
H
I
J
K
M
A
B
EXL
N
O
P
B2517 VEHICLE SPEED SIGNAL
DTC Logic
INFOID:0000000006213938
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC ERASE
Erase the DTC memory of AFS with CONSULT-III.
>> GO TO 2.
2.
DTC CONFIRMATION
1.
Turn ignition ON.
2.
Select the self-diagnosis with CONSULT-III.
3.
Check the self-diagnosis result. Refer to
Is DTC “B2517” detected?
YES
>> Refer to
.
NO
>> Refer to
GI-40, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000006213939
1.
COMBINATION METER SELF-DIAGNOSIS
Check the self-diagnosis result with CONSULT-III. Check that the combination meter does not detect any
DTCs.
Is any DTC detected?
YES
>> Check the combination meter Refer to
NO
>> GO TO 2.
2.
DTC ERASE
Erase the DTC memory of AFS with CONSULT-III.
Is the memory erased?
YES
>> INSPECTION END.
NO
>> Replace AFS control unit. Refer to
EXL-135, "Removal and Installation"
DTC No.
Trouble diagnosis name
DTC detection condition
Possible causes
B2517
Vehicle speed signal
The vehicle speed signal is not re-
ceived.
• Combination meter
• AFS control unit
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