Nissan Qashqai (2007-2010). Manual - part 1932

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DIAGNOSIS SYSTEM (SONAR CONTROL UNIT)

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< FUNCTION DIAGNOSIS >

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DIAGNOSIS SYSTEM (SONAR CONTROL UNIT)

Diagnosis Description

INFOID:0000000000935709

DESCRIPTION

Buzzer sounds to indicate a malfunctioning sensor system when a malfunction/error occurs in the body, power
supply, ground, or sensor signals of the center/corner sensor. Also, a buzzer sounds if a sonar control unit
includes a malfunction/error. 
NOTE:
• Malfunctions are indicated by a sound of the buzzer. Therefore, errors/malfunctions cannot be identified

when the buzzer system has a malfunction.

• Buzzer sounds to indicate a malfunctioning sensor system only once when turning ON the ignition switch

and shifting the lever to the “REVERSE” position. For reconfirmation, shifting the lever to a position other
than the reverse position and returning it to the “REVERSE” position enables to reconfirm the malfunction.

• Functions of the sonar system stop after indicating malfunctions/errors by the buzzer. (Buzzer does not

sound if an obstacle is approaching to the sensor.)

Identifying malfunctioning sensor system

1.

Turn the ignition switch ON. Shift lever to the “REVERSE” position.

2.

Buzzer sounds once with the same sound range as heard at normal operations. 

3.

Then buzzer sounds with a higher sound range than normal operation. Malfunctioning sensor systems
can be identified by the cycle (the number of buzzer sounds) of the buzzer sound. 
NOTE:

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< FUNCTION DIAGNOSIS >

DIAGNOSIS SYSTEM (SONAR CONTROL UNIT)

The sensors are indicated by a sound of the buzzer one by one when more than one sensor has a mal-
function/error.

JSNIA0379GB

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POWER SUPPLY AND GROUND CIRCUIT

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< COMPONENT DIAGNOSIS >

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COMPONENT DIAGNOSIS

POWER SUPPLY AND GROUND CIRCUIT

SONAR CONTROL UNIT

SONAR CONTROL UNIT : Diagnosis Procedure

INFOID:0000000000935750

1.

CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition switch ON.

2.

Shift the shift position to “R” position.

3.

Check voltage between sonar control unit harness connector terminal 1 and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Check back-up lamp switch circuit or park/neutral position switch circuit.

2.

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect sonar control unit connector.

3.

Check continuity between sonar control unit harness connector terminal 3 and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair or replace sonar control unit ground harness.

1 – Ground

: Approx. 12 V

3 – Ground

: Continuity should exist.

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< COMPONENT DIAGNOSIS >

SENSOR POWER SUPPLY AND GROUND CIRCUIT

SENSOR POWER SUPPLY AND GROUND CIRCUIT

Description

INFOID:0000000001098824

The sonar control unit outputs sensor power supply to each sensor when the shift position to “R” position.

Diagnosis Procedure

INFOID:0000000000936327

1.

CHECK CONTINUITY

1.

Turn ignition switch OFF.

2.

Disconnect sonar control unit connector, center sensor and corner sensor connector.

3.

Check continuity between sonar control unit harness connector terminal 9 and each sensor harness con-
nector terminal 1.

4.

Check continuity between sonar control unit harness connector terminal 9 and ground.

5.

Check continuity between sonar control unit harness connector terminal 10 and each sensor harness con-
nector terminal 3.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK POWER SUPPLY CIRCUIT

1.

Connect sonar control unit connector, center sensor and corner sensor connector.

2.

Turn ignition switch ON.

3.

Shift the shift position to “R” position.

4.

Check voltage between each sensor harness connector terminal 1 and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace sonar control unit.

9 – 1

: Continuity should exist.

9 – Ground

: Continuity should not exist.

10 – 3

: Continuity should exist.

1 – Ground

: Approx. 12 V