Nissan Tiida C11. Manual - part 20

AV-74

< COMPONENT DIAGNOSIS >

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U1214 NAVI CONTROL UNIT

U1214 NAVI CONTROL UNIT

Description

INFOID:0000000001728707

DTC Logic

INFOID:0000000001728708

Diagnosis Procedure

INFOID:0000000001728709

1.

PERFORM THE SELF-DIAGNOSIS

1.

Delete the self-diagnosis results. Turn ignition switch OFF.

2.

Turn ignition switch ON. Replace map DVD-ROM with a normal one. 

3.

Perform the self-diagnosis again. 

4.

Check that the DTC is detected again.

Is any DTC detected?

YES

>> Replace NAVI control unit.

NO

>> Replace Map disc.

Part name

Description

NAVI CONTORL UNIT

• Map data can be read from the map DVD-ROM by installing map DVD-ROM.
• It is the master unit of the MULTI AV system, and it is connected to each control 

unit by means of communication. It operates each system according to com-
munication signals from the NAVI control unit.

• The NAVI control unit includes the audio, hands-free phone, navigation, and 

vehicle information functions.

• It is connected to ECM and combination meter via CAN communication to ob-

tain necessary information for the vehicle information function.

• It inputs the illumination signals that are required for the display dimming con-

trol.

• It inputs the signals for driving status recognition (vehicle speed, reverse and 

parking brake). 

MAP DVD-ROM

A collection of map data

DTC

Display contents of 

CONSULT-III

DTC Detection Condition

Probable malfunction location

U1214

DVD-ROM TIMEOUT
[U1214]

• Malfunction is detected on DVD-ROM drive pickup lens 

in NAVI control unit.

• There is dirt and damage on the map disc.

• Map  disc
• NAVI  control  unit

AV

U1215 NAVI CONTROL UNIT

AV-75

< COMPONENT DIAGNOSIS >

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U1215 NAVI CONTROL UNIT

Description

INFOID:0000000001728710

DTC Logic

INFOID:0000000001728711

Diagnosis Procedure

INFOID:0000000001728712

1.

PERFORM THE SELF-DIAGNOSIS

1.

Delete the self-diagnosis results. Turn ignition switch OFF.

2.

Turn ignition switch ON. Replace map DVD-ROM with a normal one. 

3.

Perform the self-diagnosis again. 

4.

Check that the DTC is detected again.

Is any DTC detected?

YES

>> Replace NAVI control unit.

NO

>> Replace Map disc.

Part name

Description

NAVI CONTORL UNIT

• Map data can be read from the map DVD-ROM by installing map DVD-ROM.
• It is the master unit of the MULTI AV system, and it is connected to each control 

unit by means of communication. It operates each system according to com-
munication signals from the NAVI control unit.

• The NAVI control unit includes the audio, hands-free phone, navigation, and 

vehicle information functions.

• It is connected to ECM and combination meter via CAN communication to ob-

tain necessary information for the vehicle information function.

• It inputs the illumination signals that are required for the display dimming con-

trol.

• It inputs the signals for driving status recognition (vehicle speed, reverse and 

parking brake). 

MAP DVD-ROM

A collection of map data

DTC

Display contents of 

CONSULT-III

DTC Detection Condition

Probable malfunction location

U1215

DVD-ROM LOAD
[U1215]

• Malfunction is detected on DVD-ROM drive pickup lens 

in NAVI control unit.

• There is dirt and damage on the map disc.

• Map disc
• NAVI control unit

AV-76

< COMPONENT DIAGNOSIS >

[AUDIO WITH NAVIGATION]

U1243 DISPLAY UNIT

U1243 DISPLAY UNIT

Description

INFOID:0000000001728713

DTC Logic

INFOID:0000000001728714

Diagnosis Procedure

INFOID:0000000001728715

1.

CHECK DISPLAY UNIT POWER SUPPLY AND GROUND CIRCUIT

Check display unit power supply and ground circuit. Refer to 

AV-81, "DISPLAY UNIT : Diagnosis Procedure"

.

Is inspection result OK?

YES

>> GO TO 2

NO

>> Repair malfunctioning parts.

2.

CHECK CONTINUITY COMMUNICATION CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect display unit connector and NAVI control unit connector.

3.

Check continuity between display unit harness connector terminals 17, 19 and NAVI control unit harness
connector terminals 54, 53.

4.

Check continuity between display unit harness connector terminals 17, 19 and ground.

Is inspection result OK?

YES

>> GO TO 3

NO

>> Repair harness or connector.

3.

CHECK COMMUNICATION SIGNAL

1.

Connect display unit connector and NAVI control unit connector.

2.

Turn ignition switch ON.

3.

Check signal between display unit harness connector terminal 17 and ground.

Part name

Description

DISPLAY UNIT

• Display image is controlled by the serial communication from NAVI control unit.
• RGB image signal is input from NAVI control unit (RGB, RGB area and RGB 

synchronizing). Camera image signal is input from camera control unit.

• Synchronize signal (HP, VP) is output to NAVI control unit.

DTC

Display contents of 

CONSULT-III

DTC Detection Condition

Possible causes

U1243

FRONT DISP CONN
[U1243]

• Display unit power supply and ground circuit malfunc-

tion is detected.

• Malfunction is detected on communication circuit be-

tween display unit and NAVI control unit.

• Malfunction is detected on communication signal be-

tween display unit and NAVI control unit.

• Display unit power supply and 

ground circuit

• Communication circuit between 

display unit and NAVI control unit

17 - 54

: Continuity should exist.

19 - 53

: Continuity should exist.

17, 19 - Ground

: Continuity should not exist.

AV

U1243 DISPLAY UNIT

AV-77

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Is inspection result OK?

YES

>> GO TO 4

NO

>> Replace NAVI control unit.

4.

CHECK COMMUNICATION SIGNAL

Check signal between display unit harness connector terminal 19 and ground.

Is inspection result OK?

YES

>> INSPECTION END.

NO

>> Replace display unit.

17 - Ground

PKIB5039J

19 - Ground

PKIB5039J