Nissan Qashqai (2007-2010). Manual — part 1933

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BUZZER DRIVE SIGNAL CIRCUIT

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< COMPONENT DIAGNOSIS >

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BUZZER DRIVE SIGNAL CIRCUIT

Description

INFOID:0000000000935757

The sonar control unit outputs the buzzer drive signal when the rear sonar detects the obstacle.

Diagnosis Procedure

INFOID:0000000000935759

1.

CHECK HARNESS BUZZER CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect sonar control unit connector and buzzer connector.

3.

Check continuity between sonar control unit harness connector terminals 2, 6 and buzzer harness con-
nector terminals 2, 1.

4.

Check continuity between sonar control unit harness connector terminal 2 and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK BUZZER DRIVE SIGNAL

1.

Connect sonar control unit connector and buzzer connector.

2.

Bring an obstacle near to sound the buzzer.

3.

Check signal between sonar control unit harness connector terminals 2 and 6.

Is the inspection result normal?

YES

>> Replace buzzer.

NO

>> Replace sonar control unit.

2 – 2

: Continuity should exist.

6 – 1

: Continuity should exist.

2 – Ground

: Continuity should not exist.

2 – 6

Waveform period changes
due to the distance to an ob-
stacle.

JPNIA0232ZZ

SN-10

< COMPONENT DIAGNOSIS >

SENSOR SIGNAL CIRCUIT

SENSOR SIGNAL CIRCUIT

Description

INFOID:0000000000936324

The sensor detects the distance to obstacles and outputs the signal to the sonar control unit.

Diagnosis Procedure

INFOID:0000000000936326

1.

CHECK SENSOR POWER SUPPLY AND GROUND CIRCUIT

Check sensor power supply and ground circuit. Refer to

SN-8, "Diagnosis Procedure"

.

Is inspection result normal?

YES

>> GO TO 2.

NO

>> Repair malfunctioning parts.

2.

CHECK HARNESS SENSOR SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect sonar control unit connector and each sensor connector.

3.

Check continuity between sonar control unit harness connector terminals 13, 14, 15, 16 and each sensor
harness connector terminal 2.

4.

Check continuity between sonar control unit harness connector terminals 13, 14, 15, 16 and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK SENSOR SIGNAL

1.

Connect sonar control unit connector and each sensor connector.

2.

Turn ignition switch ON.

3.

Shift the shift position to “R” position.

4.

Check signal between sonar control unit harness connector terminals 13, 14, 15, 16 and Ground.

Is the inspection result normal?

YES

>> Replace sonar control unit.

NO

>> Replace malfunctioning sensor.

13 – 2

: Continuity should exist.

14 – 2

: Continuity should exist.

15 – 2

: Continuity should exist.

16 – 2

: Continuity should exist.

13 – Ground

: Continuity should not exist.

14 – Ground

: Continuity should not exist.

15 – Ground

: Continuity should not exist.

16 – Ground

: Continuity should not exist.

13 – Ground

14 – Ground

15 – Ground

16 – Ground

JPNIA0233ZZ

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SONAR CONTROL UNIT

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< ECU DIAGNOSIS >

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ECU DIAGNOSIS

SONAR CONTROL UNIT

Reference Value

INFOID:0000000000935763

TERMINAL LAYOUT

PHYSICAL VALUES

JPNIA0231ZZ

Terminal No.

(Wire color)

Description

Condition

Reference value

(Approx.)

+

–

Signal name

Input/

Output

1

(Y/G)

Ground

Power supply

Input

Ignition

switch

ON

Selector lever in R position

12 V

2

(Y/L)

6

(Y/B)

Buzzer drive signal

Output

Ignition

switch

ON

When buzzer operation

Waveform period changes ac-
cording to the distance to an ob-
stacle.

3

(B)

Ground

GND

—

Ignition

switch

ON

—

0 V

9

(B/Y)

Ground

Sensor power supply

Output

Ignition

switch

ON

Shift position to “R” position

12 V

10

(B)

Ground

Sensor ground

—

Ignition

switch

ON

—

0 V

13

(O)

10

(B)

Center sensor signal RH

Input

Ignition

switch

ON

—

14

(L)

10

(B)

Center sensor signal LH

15

(R)

10

(B)

Corner sensor signal LH

16

(LG)

10

(B)

Corner sensor signal RH

JPNIA0232ZZ

JPNIA0233ZZ

SN-12

< ECU DIAGNOSIS >

SONAR CONTROL UNIT

Wiring Diagram - SONAR SYSTEM -

INFOID:0000000000935764

JCNWA0225GB