Nissan X-Trail 32. Manual - part 55

AV-212

< DTC/CIRCUIT DIAGNOSIS >

[WITH NAVIGATION]

U12AC NAVI CONTROL UNIT

U12AC NAVI CONTROL UNIT

DTC Description

INFOID:0000000010714873

DTC DETECTION LOGIC

POSSIBLE CAUSE

NAVI control unit

FAIL-SAFE

The function of some multi-AV systems does not operate

DTC CONFIRMATION PROCEDURE

NOTE:
• The auto ACC function allows the accessory power supply for a certain period of time even after ignition

switch OFF. For this reason, when performing diagnosis, turn the ignition switch OFF and wait for 3 minutes
with the driver's door opened.

• The operation of the vehicle during standby may cause an accessory power supply.

1.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1.

Turn ignition switch ON.

2.

Turn ignition switch OFF and wait for 3 minutes with the driver's door opened.

3.

Turn ignition switch ON and wait at least 30 seconds.

4.

Select “Self Diagnostic Result” mode of “MULTI AV” using CONSULT.

5.

Check DTC.

Is DTC U12AC detected?

YES

>> Proceed to 

AV-212, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010714874

1.

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

1.

Turn ignition switch ON.

2.

Erase DTC.

3.

Perform DTC confirmation procedure again. Refer to 

AV-212, "DTC Description"

.

Is DTC U12AC detected again?

YES

>> Replace NAVI control unit. Refer to 

AV-262, "Removal and Installation"

.

NO

>> INSPECTION END

DTC

Trouble diagnosis

(Trouble diagnosis contents)

Detecting condition

U12AC

DISPLAY TEMPERATURE TOO 
HIGH
(Display temperature too high)

Excessive display circuit temperature is detected.

AV

U12AD NAVI CONTROL UNIT

AV-213

< DTC/CIRCUIT DIAGNOSIS >

[WITH NAVIGATION]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

U12AD NAVI CONTROL UNIT

DTC Description

INFOID:0000000010714875

DTC DETECTION LOGIC

POSSIBLE CAUSE

NAVI control unit

FAIL-SAFE

The function of some multi-AV systems does not operate

DTC CONFIRMATION PROCEDURE

NOTE:
• The auto ACC function allows the accessory power supply for a certain period of time even after ignition

switch OFF. For this reason, when performing diagnosis, turn the ignition switch OFF and wait for 3 minutes
with the driver's door opened.

• The operation of the vehicle during standby may cause an accessory power supply.

1.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1.

Turn ignition switch ON.

2.

Turn ignition switch OFF and wait for 3 minutes with the driver's door opened.

3.

Turn ignition switch ON and wait at least 30 seconds.

4.

Select “Self Diagnostic Result” mode of “MULTI AV” using CONSULT.

5.

Check DTC.

Is DTC U12AD detected?

YES

>> Proceed to 

AV-213, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010714876

1.

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

1.

Turn ignition switch ON.

2.

Erase DTC.

3.

Perform DTC confirmation procedure again. Refer to 

AV-213, "DTC Description"

.

Is DTC U12AD detected again?

YES

>> Replace NAVI control unit. Refer to 

AV-262, "Removal and Installation"

.

NO

>> INSPECTION END

DTC

Trouble diagnosis

(Trouble diagnosis contents)

Detecting condition

U12AD

ECU TEMPERATURE TOO HIGH
(Electronic control unit temperature 
too High)

Excessive internal ECU circuit temperature is detected.

AV-214

< DTC/CIRCUIT DIAGNOSIS >

[WITH NAVIGATION]

U12AE NAVI CONTROL UNIT

U12AE NAVI CONTROL UNIT

DTC Description

INFOID:0000000010714877

DTC DETECTION LOGIC

POSSIBLE CAUSE

NAVI control unit

FAIL-SAFE

The function of some multi-AV systems does not operate

DTC CONFIRMATION PROCEDURE

NOTE:
• The auto ACC function allows the accessory power supply for a certain period of time even after ignition

switch OFF. For this reason, when performing diagnosis, turn the ignition switch OFF and wait for 3 minutes
with the driver's door opened.

• The operation of the vehicle during standby may cause an accessory power supply.

1.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1.

Turn ignition switch ON.

2.

Turn ignition switch OFF and wait for 3 minutes with the driver's door opened.

3.

Turn ignition switch ON and wait at least 30 seconds.

4.

Select “Self Diagnostic Result” mode of “MULTI AV” using CONSULT.

5.

Check DTC.

Is DTC U12AE detected?

YES

>> Proceed to 

AV-214, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010714878

1.

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

1.

Turn ignition switch ON.

2.

Erase DTC.

3.

Perform DTC confirmation procedure again. Refer to 

AV-214, "DTC Description"

.

Is DTC U12AE detected again?

YES

>> Replace NAVI control unit. Refer to 

AV-262, "Removal and Installation"

.

NO

>> INSPECTION END

DTC

Trouble diagnosis

(Trouble diagnosis contents)

Detecting condition

U12AE

INTERNAL AMP TEMP WARNING
(Internal amplifier temperature warn-
ing)

Excessive internal amplifier circuit temperature is detected.

AV

U12AF NAVI CONTROL UNIT

AV-215

< DTC/CIRCUIT DIAGNOSIS >

[WITH NAVIGATION]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

U12AF NAVI CONTROL UNIT

DTC Description

INFOID:0000000010714879

DTC DETECTION LOGIC

POSSIBLE CAUSE

NAVI control unit

FAIL-SAFE

The function of some multi-AV systems does not operate

DTC CONFIRMATION PROCEDURE

NOTE:
• The auto ACC function allows the accessory power supply for a certain period of time even after ignition

switch OFF. For this reason, when performing diagnosis, turn the ignition switch OFF and wait for 3 minutes
with the driver's door opened.

• The operation of the vehicle during standby may cause an accessory power supply.

1.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1.

Turn ignition switch ON.

2.

Turn ignition switch OFF and wait for 3 minutes with the driver's door opened.

3.

Turn ignition switch ON and wait at least 30 seconds.

4.

Select “Self Diagnostic Result” mode of “MULTI AV” using CONSULT.

5.

Check DTC.

Is DTC U12AF detected?

YES

>> Proceed to 

AV-215, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010714880

1.

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

1.

Turn ignition switch ON.

2.

Erase DTC.

3.

Perform DTC confirmation procedure again. Refer to 

AV-215, "DTC Description"

.

Is DTC U12AF detected again?

YES

>> Replace NAVI control unit. Refer to 

AV-262, "Removal and Installation"

.

NO

>> INSPECTION END

DTC

Trouble diagnosis

(Trouble diagnosis contents)

Detecting condition

U12AF

CD MECHANISM TEMP WARNING
(CD mechanism temperature warn-
ing)

Excessive CD mechanism circuit temperature is detected.