2003 NISSAN ALMERA N16 navigation

Check Display Unit, Multifunction Switch
Power, and Ground Circuit
=NJEL0606
1 CHECK FUSE
Check for blown fuses at display unit along with multifunction switch fuses listed below.
MTBL1518
OK or NG
OK GO TO 2.
NG Replace the fuse.
2 POWER SUPPLY CIRCUIT INSPECTION
1. Disconnect display unit or multifunction switch connector.
2. Check voltage between as following unit and ground.
MKIB0259E
MTBL1519
OK or NG
OK GO TO 3.
NG Replace display unit or multifunction switch power circuit harness.
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
IDX
NAVIGATION SYSTEM
Check Display Unit, Multifunction Switch Power, and Ground Circuit
EL-469

3 GROUND CIRCUIT INSPECTION
Check continuity between display unit or multifunction switch and ground.
SKIA1409E
MTBL1520
OK or NG
OK Normal.
NG Replace ground circuit harness of display unit or multifunction switch.
NAVIGATION SYSTEM
Check Display Unit, Multifunction Switch Power, and Ground Circuit (Cont’d)
EL-470

Vehicle Speed Signal CheckNJEL0607
1 HARNESS CHECK
1. Turn the ignition switch OFF.
2. Disconnect AV and NAVI control unit connector and combination meter connector.
3. Check continuity AV and NAVI control unit and combination meter.
YEL843D
MTBL1521
4. Check continuity AV and NAVI control unit harness connector terminal 33(L/B) and ground.
Continuity should not exist.
OK or NG
OK GO TO 2.
NG Repair harness.
Check connector housings for disconnected or loose terminals.
2 VEHICLE SPEED SIGNAL CHECK 1
1. Connect AV and NAVI control unit connector and combination meter connector.
2. Turn the ignition switch ON.
3. Check voltage between AV and NAVI control unit harness connector M96 terminal 33 (L/B) and ground.
Approx. 3.5 V or more.
SKIA1411E
OK or NG
OK GO TO 3.
NG Replace AV and NAVI control unit.
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
IDX
NAVIGATION SYSTEM
Vehicle Speed Signal Check
EL-471

3 VEHICLE SPEED SIGNAL CHECK 2
1. Connect combination meter connector.
2. While driving vehicle at a constant speed.
SKIA1411E
3. Check voltage signal between AV and NAVI control unit and ground with oscilloscope or CONSULT-ll.
33 (L/B)-ground:
EL-450, “Terminals and Reference Value for AV and NAVI Control Unit”
OK or NG
OK Replace AV and NAVI control unit.
NG Check combination meter system. EL-117, “Combination Meter Self-Diagnosis”.
Illumination Control Signal CheckNJEL0608
1 ILLUMINATION CONTROL SIGNAL CHECK
1. Turn the ignition switch ON.
2. Check voltage between AV and NAVI control unit and ground.
SKIA1412E
MTBL1522
OK or NG
OK Replace AV and NAVI control unit.
NG Check harness for open or short between AV and NAVI control unit and combination
switch.
NAVIGATION SYSTEM
Vehicle Speed Signal Check (Cont’d)
EL-472

Ignition Signal CheckNJEL0609
1 IGNITION SIGNAL CHECK
1. Disconnect the AV and NAVI control unit connector.
2. Turn the ignition switch ON.
3. Check voltage between AV and NAVI control unit and ground.
SKIA1413E
MTBL1523
OK or NG
OK Replace AV and NAVI control unit.
NG Check harness for open or short between AV and NAVI control unit and fuse.
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
IDX
NAVIGATION SYSTEM
Ignition Signal Check
EL-473

Reverse Signal Check=NJEL0610
1 REVERSE LAMP CHECK
1. Turn the ignition switch ON.
2. A/T Shift selector lever into R-position. Does “R” in the shift positionindicator come on?
YesorNo
Ye s G O T O 2 .
No Check park/neutral position relay system. AT-408, “Park/Neutral Position (PNP) Switch
Adjustment”.
2 REVERSE SIGNAL CHECK
1. With the selector lever in R-position.
2. Check voltage between AV and NAVI control unit and ground.
SKIA1414E
MTBL1524
OK or NG
OK Replace AV and NAVI control unit.
NG Check harness for open or short between AV and NAVI control unit and park/neutral
position relay.
NAVIGATION SYSTEM
Reverse Signal Check
EL-474

RGB Screen Is Not ShownNJEL0611
1 HARNESS CHECK
1. Turn the ignition switch OFF.
2. Disconnect AV and NAVI control unit connector and Display connector.
3. Check continuity between AV and NAVI control unit and Display.
SKIA1415E
MTBL1525
4. Check continuity between AV and NAVI control unit and ground.
MTBL1526
OK or NG
OK GO TO 2.
NG Repair harness.
Check connector housings for disconnected or loose terminals.
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
IDX
NAVIGATION SYSTEM
RGB Screen Is Not Shown
EL-475

2 HORIZONTAL SYNCHRONIZATION SIGNAL CHECK
1. Connect AV and NAVI control unit connector and Display connector.
2. Turn the ignition switch ON.
3. Check voltage signal between AV and NAVI control unit connector terminals 13 (BR) and 17 with oscilloscope or CON-
SULT-ll.
SKIA1416E
13 (BR)-17: EL-450, “Terminals and Reference Value for AV and NAVI ControlUnit”
OK or NG
OK GO TO 3.
NG Replace the display unit.
3 RGB AREA SIGNAL CHECK
1. Press “INFO” switch.
2. Check voltage signal between AV and NAVI control unit connector terminals 12 (R) and 17with oscilloscope or CON-
SULT-ll.
SKIA1417E
12 (R)-17: EL-450, “Terminals and Reference Value for AV and NAVI Control Unit”
OK or NG
OK Replace the display unit.
NG Replace AV and NAVI control unit.
NAVIGATION SYSTEM
RGB Screen Is Not Shown (Cont’d)
EL-476