Nissan Sentra. Instruction — part 68

AV-264

< DTC/CIRCUIT DIAGNOSIS >

[NAVIGATION WITHOUT BOSE]

U12AD AV CONTROL UNIT

U12AD AV CONTROL UNIT

DTC Logic

INFOID:0000000009758966

DTC DETECTION LOGIC

CONSULT Display

DTC Detection Condition

Possible Cause

ECU Temperature too High
[U12AD]

AV control unit temperature has exceeded maxi-
mum temperature.

Replace AV control unit if malfunction occurs
constantly.
Refer to

AV-298, "Removal and Installation"

.

AV

U12AE AV CONTROL UNIT

AV-265

< DTC/CIRCUIT DIAGNOSIS >

[NAVIGATION WITHOUT BOSE]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

U12AE AV CONTROL UNIT

DTC Logic

INFOID:0000000009758967

DTC DETECTION LOGIC

CONSULT Display

DTC Detection Condition

Possible Cause

Internal Amplifier temperature
Warning
[U12AE]

Internal amplifier temperature has exceeded
maximum temperature.

Replace AV control unit if malfunction occurs
constantly.
Refer to

AV-298, "Removal and Installation"

.

AV-266

< DTC/CIRCUIT DIAGNOSIS >

[NAVIGATION WITHOUT BOSE]

U12AF AV CONTROL UNIT

U12AF AV CONTROL UNIT

DTC Logic

INFOID:0000000009758968

DTC DETECTION LOGIC

CONSULT Display

DTC Detection Condition

Possible Cause

CD Mechanism Temperature
Warning
[U12AF]

CD drive temperature has exceeded maximum
temperature. CD drive is switched OFF to avoid
irreversible damage.

Replace AV control unit if malfunction occurs
constantly.
Refer to

AV-298, "Removal and Installation"

.

AV

U12B0 POWER SUPPLY VOLTAGE

AV-267

< DTC/CIRCUIT DIAGNOSIS >

[NAVIGATION WITHOUT BOSE]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

U12B0 POWER SUPPLY VOLTAGE

DTC Logic

INFOID:0000000009758969

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000009758970

1.

CHECK CHARGING SYSTEM

Check the vehicle charging system. Refer to

STR-20, "Work Flow (With GR8-1200 NI)"

or

STR-24, "Work

Flow (Without GR8-1200 NI)"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace the malfunctioning components.

2.

CHECK AV CONTROL UNIT POWER SUPPLY AND GROUND CIRCUITS

Perform the AV control unit power supply and ground circuit diagnosis procedure. Refer to

AV-270, "AV CON-

TROL UNIT : Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> Replace the AV control unit. Refer to

AV-298, "Removal and Installation"

.

NO

>> Repair or replace harness or connectors.

CONSULT Display

DTC Detection Condition

Possible Cause

Supply Voltage Goes below 9V
> 20s
[U12B0]

AV control unit supply voltage exceeds lower lim-
its.

• Charging system malfunction.
• AV control unit power supply or ground circuits.