2003 NISSAN ALMERA N16 Multi function display

TERMINALS
SIGNALCONDITION
VOLTAGE (+)
(–)
TERMI-
NALWIRE
COLORIGNITION
SWITCHOPERATION
15 — —Shield
ground—— —
16 L GroundA/C clock
signalON —
SKIA0174E
19 L/B GroundVehicle
speed signal
(2-pulse)ONWhen vehicle speed is approx. 20
km/h (12 MPH)
ELF1080D
21 B Ground — — — —
22 Y/G GroundIgnition sig-
nalON — —
23 Y GroundBattery
powerOFF — Battery voltage
24 P Ground ACC signal ACC — —
Terminals and Reference Value for
Multifunction Switch
NJEL0559
TERMINALS
SIGNALCONDITION
DATA (+)
(–)
TERMINALWIRE
COLORIGNITION
SWITCHOPERATION
1 B Ground Ground ON — Apporox. 0V
6 P Ground ACC ACC — Battery voltage
11 L GroundCommunication
signal (+)ON —
SKIA0175E
GI
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VFD DISPLAY
Terminals and Reference Value for Display Unit (Cont’d)
EL-221

TERMINALS
SIGNALCONDITION
DATA (+)
(–)
TERMINALWIRE
COLORIGNITION
SWITCHOPERATION
12 B/W GroundCommunication
signal (+)ON —
SKIA0175E
13 P GroundCommunication
signal (−)ON —
SKIA0176E
14 L GroundCommunication
signal (−)ON —
SKIA0176E
15 — Ground Shield ground ON — —
16 — Ground Shield ground ON — —
Trouble DiagnosisNJEL0637SELF-DIAGNOSIS FUNCTIONNJEL0637S01DescriptionNJEL0637S0101Self-diagnosis items are as follows.
Screen of all segments check
Software version and hardware version of display unit are dis-
played on the upper zone of the screen. (This information is not
used for service. Skip this step.)
Dimming steps and levels check
Can be checked communication line between A/C auto amp.,
audio unit, multifunction switch, combination meter and display
unit, and displays the results on the upper zone of the screen.
VFD DISPLAY
Terminals and Reference Value for Multifunction Switch (Cont’d)
EL-222

POWER SUPPLY AND GROUND CIRCUIT CHECK FOR
MULTIFUNCTION SWITCH
NJEL0637S04
1 CHECK FUSES
Check the fuse below.
MTBL1463
OK or NG
OK GO TO 2.
NG If fuse is blown, be sure to eliminate cause of problem before installingnew fuse. Refer
to EL-12, “POWER SUPPLY ROUTING”.
2 POWER SUPPLY CIRCUIT CHECK
1. Disconnect multifunction switch connector.
MKIB0103E
2. Check voltage between multifunction switch and ground.
MTBL1464
OK or NG
OK GO TO 3.
NG Check harness for open or short between multifunction switch and fuse.
VFD DISPLAY
Trouble Diagnosis (Cont’d)
EL-226

3 GROUND CIRCUIT CHECK
Check continuity between multifunction switch harness connector M97 terminal 1 (B) and ground.
MKIB0104E
Continuity should exist.
OK or NG
OK INSPECTION END.
NG Check ground harness.
GI
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LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
IDX
VFD DISPLAY
Trouble Diagnosis (Cont’d)
EL-227

AV COMMUNICATION LINE CHECKNJEL0637S06
1 MULTIFUNCTION SWITCH CIRCUIT CHECK
1. Turn ignition switch OFF.
MKIB0219E
2. Disconnect display unit connector and multifunction switch connector.
3. Check continuity between display unit and multifunction switch.
MTBL1467
4. Check continuity between display unit and ground.
MTBL1468
OK or NG
OK GO TO 2.
NG Replace harness or connector.
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
IDX
VFD DISPLAY
Trouble Diagnosis (Cont’d)
EL-229

2 AUDIO UNIT CIRCUIT CHECK
1. Turn ignition switch OFF.
YEL830D
2. Disconnect audio unit connector.
3. Check continuity between multifunction switch and audio unit.
MTBL1469
4. Check continuity between multifunction switch and ground.
MTBL1470
OK or NG
OK Replace display unit.
NG Replace harness or connector.
VFD DISPLAY
Trouble Diagnosis (Cont’d)
EL-230

A/C AUTO AMP. CIRCUIT CHECKNJEL0637S07
1 A/C AUTO AMP. AND DISPLAY UNIT CIRCUIT CHECK
1. Turn ignition switch OFF.
2. Disconnect A/C auto amp. connector and display unit connector.
3. Check continuity between display unit and A/C auto amp.
MKIB0220E
MTBL1471
4. Check continuity between display unit and ground.
MTBL1472
OK or NG
OK Check A/C auto amp. Refer to ATC-29, “TROUBLE DIAGNOSIS”.
NG Replace harness or connector.
SELF-DIAGNOSIS DOES NOT PERFORMNJEL0637S08
1 MULTIFUNCTION SWITCH CHECK
Check multifunction switch power and ground circuit. Refer to EL-226, “Power Supply and Ground Circuit Check for Multi-
function Switch”.
GO TO 2.
2 DISPLAY UNIT CHECK
Check display unit power and ground circuit. Refer to EL-224, “Power Supply and Ground Circuit Check for Display Unit”.
GO TO 3.
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
IDX
VFD DISPLAY
Trouble Diagnosis (Cont’d)
EL-231

3 SELF-DIAGNOSIS CHECK
1. Disconnect audio unit connector M53.
2. Perform self-diagnosis mode. Refer to EL-223, “Performing Self-Diagnosis Mode”.
Does Self-diagnosis activated?
Ye s G O T O 4 .
No AV communication line check. Refer to EL-229, “AV Communication Line Check”.
4 MULTIFUNCTION SWITCH CIRCUIT CHECK
1. Disconnect multifunction switch connector.
YEL830D
2. Check continuity between multifunction switch and audio unit.
MTBL1473
3. Check continuity between multifunction switch and ground.
MTBL1474
OK or NG
OK Replace display unit.
NG Replace harness or connector.
VFD DISPLAY
Trouble Diagnosis (Cont’d)
EL-232