Infiniti QX56 (Z62). Manual - part 694

 

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Infiniti QX56 (Z62). Manual - part 694

 

 

EXL-68

< DTC/CIRCUIT DIAGNOSIS >

[XENON TYPE]

B2513 HEIGHT SENSOR UNUSUAL [FR]

B2513 HEIGHT SENSOR UNUSUAL [FR]

DTC Logic

INFOID:0000000006213932

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.

Start the engine.

2.

Turn the headlamp ON.

3.

Select the self-diagnosis with CONSULT-III.

4.

Check the self-diagnosis result. Refer to 

EXL-39, "DTC Index"

.

Is DTC “B2513” detected?

YES

>> Refer to 

EXL-68, "Diagnosis Procedure"

NO

>> Refer to 

GI-40, "Intermittent Incident"

.

Diagnosis Procedure

INFOID:0000000006213933

1.

CHECK HEIGHT SENSOR SIGNAL INPUT

1.

Turn ignition switch ON.

2.

Check voltage between AFS control unit harness connector and ground.

Is the measurement value within the standard value?

YES

>> Replace AFS control unit. Refer to 

EXL-135, "Removal and Installation"

Less than the standard value >>GO TO 2.
Higher than the standard value>>GO TO 5.

2.

CHECK HEIGHT SENSOR POWER SUPPLY CIRCUIT INPUT VOLTAGE

1.

Turn ignition switch OFF.

2.

Disconnect front height sensor connector.

3.

Turn ignition switch ON.

4.

Check voltage between front height sensor harness connector and ground.

DTC No.

Trouble diagnosis name

DTC detection condition

Possible cause

B2513

Height sensor unusual [FR]

An applicable DTC is indicated when any of the 
following conditions is detected continuously 
for 2 seconds or more. 
• The front height sensor power supply is 6 V 

or more, or 4 V or less.

• The front height sensor signal is 0.25 V or 

less, or 4.75 V or more.

Front height sensor
• Front height sensor
• Harness and connector
• AFS control unit

(+)

(

)

Voltage

(Approx.)

AFS control unit

Connector

Terminal

M135

23

Ground

0.25 - 4.75 V

(+)

(

)

Voltage

(Approx.)

Front height sensor

Connector

Terminal

E208

1

Ground

5 V

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 harness 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 harness 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 connector and front height sensor connector.

3.

Check continuity between AFS control unit harness 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

Ground

Continuity

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

Ground

Continuity

Connector

Terminal

M135

5

Not existed

(+)

(

)

Voltage

(Approx.)

AFS control unit

Connector

Terminal

M135

10

Ground

0 V

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

>> Repair or replace harness.

AFS control unit

Front height sensor

Continuity

Connector

Terminal

Connector

Terminal

M135

10

E208

3

Existed

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 Logic

INFOID:0000000006213934

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.

Start the engine.

2.

Turn the headlamp ON.

3.

Select the self-diagnosis with CONSULT-III.

4.

Check the self-diagnosis result. Refer to 

EXL-39, "DTC Index"

.

Is DTC “B2514” detected?

YES

>> Refer to 

EXL-71, "Diagnosis Procedure"

NO

>> Refer to 

GI-40, "Intermittent Incident"

.

Diagnosis Procedure

INFOID:0000000006213935

1.

CHECK HEIGHT SENSOR SIGNAL INPUT

1.

Turn ignition switch ON.

2.

Check voltage between AFS control unit harness connector and ground.

Is the measurement value within the standard value?

YES

>> Replace AFS control unit. Refer to 

EXL-135, "Removal and Installation"

Less than the standard value >>GO TO 2.
Higher than the standard value>>GO TO 5.

2.

CHECK HEIGHT SENSOR POWER SUPPLY CIRCUIT INPUT VOLTAGE

1.

Turn ignition switch OFF.

2.

Disconnect rear height sensor connector.

3.

Turn ignition switch ON.

4.

Check voltage between rear height sensor harness connector and ground.

DTC No.

Trouble diagnosis name

DTC detection condition

Possible cause

B2514

Height sensor unusual [RR]

An applicable DTC is indicated when any of the fol-
lowing conditions is detected continuously for 2 
seconds or more. 
• The rear height sensor power supply is 6 V or 

more, or 4 V or less.

• The rear height sensor signal is 0.25 V or less, or 

4.75 V or more.

Rear height sensor
• Rear height sensor
• Harness and connector
• AFS control unit

(+)

(

)

Voltage

(Approx.)

AFS control unit

Connector

Terminal

M135

28

Ground

0.25 - 4.75 V

(+)

(

)

Voltage

(Approx.)

Rear height sensor

Connector

Terminal

C15

1

Ground

5 V

 

 

 

 

 

 

 

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