Infiniti EX35. Manual - part 1334

SN

BUZZER CIRCUIT

SN-27

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace sonar control unit.

(+)

(

−

)

Condition

Signal

Sonar control unit

Connector

Terminal

M44

23

Ground

When buzzer operation

NOTE:
Waveform period changes due to 
the distance to an obstacle.

SKIB8943E

SN-28

< COMPONENT DIAGNOSIS >

SONAR CANCEL SWITCH CIRCUIT

SONAR CANCEL SWITCH CIRCUIT

Description

INFOID:0000000003160578

The sonar control unit turns the sonar system activation OFF when inputting the cancel switch signal.

Component Function Check

INFOID:0000000003160579

1.

SONAR CONTROL UNIT DATA MONITOR INSPECTION

Check the cancel switch with the sonar control unit data monitor.

Cancel switch

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000003160580

1.

CHECK HARNESS CANCEL SWITCH SIGNAL CIRCUIT

1.

Disconnect sonar control unit connector and cancel switch connector. 

2.

Check continuity between sonar control unit harness connector and cancel switch harness connector.

3.

Check continuity between sonar control unit harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK VOLTAGE SONAR CONTROL UNIT

1.

Connect sonar control unit connector. 

2.

Turn ignition switch ON.

3.

Check voltage between sonar control unit harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace sonar control unit.

3.

CHECK CANCEL SWITCH

1.

Turn ignition switch OFF.

2.

Check sonar cancel switch function. Refer to 

SN-28, "Component Function Check"

.

Is the inspection result normal?

Vehicle condition

Indication

Sonar system ON

: ON

Sonar system OFF

: OFF

Sonar control unit

Cancel switch

Continuity

Connector

Terminal

Connector

Terminal

M44

2

M153

1

Existed

Sonar control unit

Ground

Continuity

Connector

Terminal

M44

2

Not existed

(+)

(

−

)

Voltage

(Approx.)

Sonar control unit

Connector

Terminal

M44

2

Ground

12.0 V

SN

SONAR CANCEL SWITCH CIRCUIT

SN-29

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

YES

>> GO TO 4.

NO

>> Replace cancel switch.

4.

CHECK HARNESS CANCEL SWITCH GROUND CIRCUIT

1.

Turn ignition switch ON.

2.

Check continuity between cancel switch harness connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair harness or connector.

Cancel switch

Ground

Continuity

Connector

Terminal

M153

3

Existed

SN-30

< ECU DIAGNOSIS >

SONAR CONTROL UNIT

ECU DIAGNOSIS

SONAR CONTROL UNIT

Reference Value

INFOID:0000000003160581

VALUES ON THE DIAGNOSIS TOOL

TERMINAL LAYOUT

Monitor Item

Display

Description

FRONT BUZZER

On

Buzzer (forward) output condition.

Off

Buzzer (forward) non-output condition.

REAR BUZZER

On

Buzzer (backward) output condition.

Off

Buzzer (backward) non-output condition.

 P RANGE

On

Selector lever in P position.

Off

Other than selector lever in P position.

REVERSE RANGE

On

Selector lever in R position.

Off

Other than selector lever in R position.

CANCEL SW

On

When sonar system is ON.

Off

When sonar system is OFF.

CANCEL SW IND

On

When cancel switch indicator lamp is ON.

Off

When cancel switch indicator lamp is OFF.

VHCL SPE COND

On

Turns ON when the vehicle speed is 10 km/h (6.2 MPH) or less while accelerating.

Off

Turns OFF when the vehicle speed is 15 km/h (9.3 MPH) or more while decelerating.

CR SEN [FL]
CR SEN [FR]
CR SEN [RL]
CR SEN [RR]

ERROR

When a sensor is abnormal.

LV.0

When a sensor is not detection.

LV.2

The distance between the corner sensor and an obstacle is 50 cm (19.6 in) or more and 
less then 60 cm (23.6 in).

LV.3

The distance between the corner sensor and an obstacle is 30 cm (11.8 in) or more and 
less then 50 cm (19.6 in).

LV.4

The distance between corner sensor and an obstacle less than 30 cm (11.8 in).

CTR SEN [RL]
CTR SEN [RR]

ERROR

When a sensor is abnormal.

LV.0

When a sensor is not detection.

LV.1

The distance between the center sensor and an obstacle is 60 cm (23.6 in) or more and 
less then 100 cm (39.3 in).

LV.2

The distance between the center sensor and an obstacle is 50 cm (19.6 in) or more and 
less then 60 cm (23.6 in).

LV.3

The distance between the center sensor and an obstacle is 30 cm (11.8 in) or more and 
less then 50 cm (19.6 in).

LV.4

The distance between center sensor and an obstacle less than 30 cm (11.8 in).

JSNIA0303ZZ