Nissan Frontier. Manual - part 56

AV-216

< DTC/CIRCUIT DIAGNOSIS >

[DISPLAY AUDIO WITH AMPLIFIER]

AMP ON SIGNAL CIRCUIT

AMP ON SIGNAL CIRCUIT

Diagnosis Procedure

INFOID:0000000009482159

Regarding Wiring Diagram information, refer to 

AV-177, "Wiring Diagram"

.

1.

CHECK AUDIO AMPLIFIER AMP ON SIGNAL

1. Turn audio system ON.

2. Check voltage between audio amplifier connector B159 and ground.

Is inspection result normal?

YES

>> Inspection End.

NO

>> GO TO 2.

2.

CHECK AUDIO UNIT AMP ON SIGNAL

Check voltage between audio unit connector M46 and ground.

Is inspection result normal?

YES

>> Repair or replace harness or connectors.

NO

>> Replace audio unit. Refer to 

AV-233, "Removal and Installation"

.

Audio amplifier

Ground

Voltage

(Approx.)

Connector

Terminal

B159

9

—

Greater than 6.5 V

Audio unit

Ground

Voltage

(Approx.)

Connector

Terminal

M46

1

—

Greater than 6.5 V

AV

REAR VIEW CAMERA IMAGE SIGNAL CIRCUIT

AV-217

< DTC/CIRCUIT DIAGNOSIS >

[DISPLAY AUDIO WITH AMPLIFIER]

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REAR VIEW CAMERA IMAGE SIGNAL CIRCUIT

Diagnosis Procedure

INFOID:0000000009482160

Regarding Wiring Diagram information, refer to 

AV-177, "Wiring Diagram"

.

1.

CHECK REVERSE INPUT SIGNAL

1. Turn ignition switch ON.

2. Shift the selector lever to R (reverse).

3. Check voltage between audio unit connector M65 and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace harness or connectors.

2.

CHECK CAMERA POWER SUPPLY CIRCUIT CONTINUITY

1. Turn ignition switch OFF.

2. Disconnect audio unit connector M65 and rear view camera connector.

3. Check continuity between audio unit connector M65 and rear view camera connector C251.

4. Check continuity between audio unit connector M45 and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connectors.

3.

CHECK CAMERA POWER SUPPLY VOLTAGE

1. Connect audio unit connector M65 and rear view camera connector.

2. Turn ignition switch ON.

3. Shift the selector lever to R (reverse).

4. Check voltage between audio unit connector M65 and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace audio unit. Refer to 

AV-233, "Removal and Installation"

.

4.

CHECK CAMERA IMAGE SIGNAL CIRCUIT CONTINUITY

1. Turn ignition switch OFF.

Audio unit

Ground

Condition

Voltage

(Approx.)

Connector

Terminal

M65

50

—

Selector lever in R (re-
verse)

Battery Voltage

Audio unit

Rear view camera

Continuity

Connector

Terminal

Connector

Terminal

M65

34

C251

1

Yes

Audio unit

Ground

Continuity

Connector

Terminal

M65

34

No

Audio unit

Ground

Condition

Voltage

(Approx.)

Connector

Terminal

M65

34

—

Selector lever is in “R”.

6.0 V

AV-218

< DTC/CIRCUIT DIAGNOSIS >

[DISPLAY AUDIO WITH AMPLIFIER]

REAR VIEW CAMERA IMAGE SIGNAL CIRCUIT

2. Disconnect audio unit connector M65 and rear view camera connector.

3. Check continuity between audio unit connector M65 and rear view camera connector C251.

4. Check continuity between audio unit connector M65 and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace harness or connectors.

5.

CHECK CAMERA GROUND CIRCUIT CONTINUITY

Check continuity between audio unit connector M65 and rear view camera connector C251.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace harness or connectors.

6.

CHECK CAMERA IMAGE SIGNAL

1. Connect audio unit connector M65 and rear view camera connector.

2. Turn ignition switch ON.

3. Shift the selector lever to R (reverse).

4. Check signal between audio unit connector M65 and ground.

Is the inspection result normal?

YES

>> Replace audio unit. Refer to 

AV-233, "Removal and Installation"

.

NO

>> Replace rear view camera. Refer to 

AV-248, "Removal and Installation"

.

Audio unit

Rear view camera

Continuity

Connector

Terminal

Connector

Terminal

M65

35

C251

3

Yes

Audio unit

Ground

Continuity

Connector

Terminal

M65

35

No

Audio unit

Rear view camera

Continuity

Connector

Terminal

Connector

Terminal

M65

36

C251

6

Yes

Audio unit

Ground

Condition

Reference value

(+)

(

−)

Connector

Terminal

M65

35

—

Camera image dis-

played.

SKIB2251J

AV

STEERING SWITCH

AV-219

< DTC/CIRCUIT DIAGNOSIS >

[DISPLAY AUDIO WITH AMPLIFIER]

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STEERING SWITCH

Diagnosis Procedure

INFOID:0000000009482161

Regarding Wiring Diagram information, refer to 

AV-177, "Wiring Diagram"

.

1.

CHECK STEERING WHEEL AUDIO CONTROL SWITCH RESISTANCE

1. Disconnect combination switch connector M102.

2. Check resistance between combination switch connector terminals.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace steering wheel audio control switches. Refer to 

AV-240, "Removal and Installation"

.

2.

CHECK HARNESS BETWEEN BLUETOOTH

®

 CONTROL UNIT AND COMBINATION SWITCH

1. Turn ignition switch OFF.
2. Disconnect Bluetooth

®

 control unit connector B141 and combination switch connector M30.

3. Check continuity between Bluetooth

®

 control unit connector B141 and combination switch connector M30.

4. Check continuity between Bluetooth

®

 control unit connector B141 and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connectors.

3.

SPIRAL CABLE CHECK

Check continuity between combination switch connectors M30 and M102.

Combination switch connector M102

Condition

Resistance (

Ω)

(Approx.)

Terminal

Terminal

16

18

Depress VOL DOWN switch.

1

Depress VOL UP switch.

121

Depress  

switch.

321

15

Depress MODE switch.

1

Depress  

switch.

121

Depress  

switch.

321

Depress  

switch.

723

Bluetooth

®

 control unit

Combination switch

Continuity

Connector

Terminal

Connector

Terminal

B141

12

M30

24

Yes

13

25

14

31

Bluetooth

®

 control unit

—

Continuity

Connector

Terminal

B141

12

Ground

No

13

14