Infiniti EX35. Manual - part 1328

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DIAGNOSIS AND REPAIR WORKFLOW

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< BASIC INSPECTION >

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BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Work Flow

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DETAILED FLOW

1.

INTERVIEW FOR MALFUNCTION

Interview the conditions and environment when occurring any malfunction to the customer.

>> GO TO 2.

2.

SYMPTOM CHECK

• Check the symptom from the customer's information.
• Check that any malfunction occurs other than the malfunction interviewed from the customer. 

>> GO TO 3.

3.

INSPECTION BEFORE DIAGNOSIS

Check the following conditions of the sensor.
• Check if the sonar sensor is not frozen.
• Check if snow, mud, or other foreign objects are not adhering to the sonar sensor.
• Check if there is no deformation, scratches, or other damage to the sonar sensor.
• Check if water has not accumulated in the sonar sensor.
Is the sensor condition normal?

YES

>> GO TO 4.

NO

>> Repair the sensor condition.

4.

SELF-DIAGNOSIS WITH CONSULT-III RESULT INSPECTION

Perform the self-diagnosis with CONSULT-III.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 6.

5.

MALFUNCTIONING PART EXTRACTION BY SYMPTOM DIAGNOSIS

Repair the malfunctioning part by the symptom diagnosis.

>> GO TO 6.

6.

FINAL INSPECTION

Check that the sonar system activates normally.

Does the sonar system activate normally?

YES

>> INSPECTION END

NO

>> GO TO 1.

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< FUNCTION DIAGNOSIS >

SONAR SYSTEM

FUNCTION DIAGNOSIS

SONAR SYSTEM

System Diagram

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System Description

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• The sonar sensor installed to the front bumper and the rear bumper detects obstacles around the bumper.
• The distance between the bumper and the obstacle is informed of the driver with different frequency and sort

of buzzers (low/high sound).

Activation condition

Front sensor

The front sensor activates and outputs the warning buzzer (low sound) in the following conditions. 
• Cancel switch OFF
• P range signal OFF
• The vehicle speed signal is within the activation condition. 
• Obstacle detection

Rear sensor

The rear sensor activates and outputs the warning buzzer (high sound) in the following conditions.
• Cancel switch OFF
• Reverse signal ON
• P range signal OFF
• Obstacle detection

x: applicable

NOTE:

*: If both the front and the rear sensors detect different objects simultaneously, the sensor which detects the closer object is prior to
another sensor. If the detection distance is equal between the front and the rear, the rear sensor is prior to the front sensor.

Vehicle speed signal activation condition range

• The sensor activation turns OFF when the vehicle drives at 15 km/h (9.3 MPH) or more to the forward direc-

tion.

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Cancel 

switch

Reverse 

signal

P range 

signal

Vehicle 

speed signal

Front sensor

(Buzzer integrated in sonar control 

unit)

Rear sensor

(Buzzer separated to other unit)

OFF

ON

OFF

—

X

*

X

*

OFF

OFF

OFF

Within the 

condition

X

—

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SONAR SYSTEM

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< FUNCTION DIAGNOSIS >

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• The sensor activation starts when the vehicle speed is 10 km/h (6.2 MPH) or less.

Obstacle detection distance

• The sonar control unit controls the obstacle detection distance. The detection distance differs between the

corner sensor and the center sensor.

• The sonar control unit outputs the warning buzzer frequency at 3 levels according to the corner sensor

detection condition.

• The sonar control unit outputs the warning buzzer frequency at 4 levels according to the center sensor

detection condition.

• The detection condition setting is adjustable to 4 levels with CONSULT-III. Refer to 

SN-8, "CONSULT-III

Function (SONAR)"

.

• CONSULT-III enables the center sensor (rear) not to detect the range of 40 cm (15.7 in) or less to prevent

from the trailer hitch vehicles misdetection. Refer to 

SN-8, "CONSULT-III Function (SONAR)"

.

Obstacle detection range image

Detection distance

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Approx. 50 cm (19.6 in)

B.

Approx. 15 cm (5.9 in)

Warning item

Corner sensor

Center sensor

First stage warning

—

70 – 110 cm (27.5 – 43.3 in)

Second stage warning

60 – 70 cm (23.6 – 27.5 in)

60 – 70 cm (23.6 – 27.5 in)

Third stage warning

40 – 60 cm (15.7 – 23.6 in)

40 – 60 cm (15.7 – 23.6 in)

Fourth stage warning

Less than 40 cm (15.7 in)

Less than 40 cm (15.7 in)

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< FUNCTION DIAGNOSIS >

SONAR SYSTEM

Warning buzzer frequency

• The warning buzzer output frequency changes 4 levels (for center) and 3 levels (for corner) according to the

detection distance.

• The nearest sensor from the detected obstacle applies the buzzer output frequency if plural sensors detect

any obstacle simultaneously. 

• If both the front and the rear sensor detect different objects simultaneously, the sensor which detects the

closer object is prior to another sensor. If the detection distance is equal between the front and the rear,
warning buzzer of rear sounds. (The front and the rear buzzers do not output the sounds simultaneously.)

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