NISSAN PRIMERA 1999 Electronic Repair Manual

Wiring Diagram—DEF—
YEL183C
IGNITION SWITCH
ON or START
FUSE
BLOCK
(J/B)
To EL-DEF-03 Refer to EL-POWER.
: With door mirror heater
: 4 door models and
5 door hatchback models
: Wagon models
OFFON
INDICATOR
LAMPREAR WIN-
DOW DEFOG-
GER SWITCHREAR WINDOW
DEFOGGER
RELAY
Next page
: This connector is not shown in“HARNESS LAYOUT”of EL section.REAR WINDOW
DEFOGGER
REFER TO THE FOLLOWING
FUSE BLOCK - Junction Box (J/B)
FUSE BLOCK - Junction Box (J/B) REAR WINDOW
DEFOGGER
CONDENSER TIME
CONTROL
UNIT BATTERY
BATTERY
REAR WINDOW DEFOGGER AND DOOR MIRROR DEFOGGER
EL-209

YEL343B
L/R
L/R
1B1
BB412
WB4431
2 BB
B411 3:
:
B R/W
BB
B44
2 1 L/R R/W
:
L/R L/R
3
2 1 L/R B
:
1B44
L/R
B593 B
B1201
B
B59 :-3
-1 ,B59 -2
2B3B
1B1
BB1202B3B
** *
*
B119*EL-DEF-02
A
D113
4D
5H
B485H 5H
D110 D103
D111
5H 4D
D103
5H
4D
4D
D115,
D111 D115 D113
B59 -1 -2 -3B59 B59
Preceding
page: 4 door models
: 5 door hatchback models
REAR
WINDOW
DEFOGGER
CONDENSERREAR
WINDOW
DEFOGGER
CONDENSER
: These connectors are not shown in“HARNESS LAYOUT”of EL section.
REAR WINDOW DEFOGGER AND DOOR MIRROR DEFOGGER
Wiring Diagram—DEF—(Cont’d)
EL-210

YEL887C
REAR WINDOW DEFOGGER AND DOOR MIRROR DEFOGGER
Wiring Diagram—DEF—(Cont’d)
EL-211

Trouble Diagnoses
DIAGNOSTIC PROCEDURE
SYMPTOM: Rear window defogger/door mirror
defogger does not activate, or does not
go off after activating.
CHECK REAR WINDOW DEFOGGER
INPUT SIGNAL.
1. Remove control unit from fuse block
(J/B).
2. Check continuity between control unit
harness terminal

3and ground.
OK
NG
Check the following.

Rear window defogger
switch

Harness for open or short
between control unit and
rear window defogger
switch

Rear window defogger
switch ground circuit
1. Turn ignition switch to ON position.
2. Check voltage between control unit termi-
nal

1and ground.
Battery voltage should exist.
OK
NG
Check the following.

10A fuse [No.26, located
in the fuse block (J/B)]
1. Turn ignition switch to ON position.
2. Check voltage between control unit termi-
nal

13and ground.
Battery voltage should exist.
OK
NG
Check the following.

Rear window defogger
relay
CHECK REAR WINDOW DEFOGGER
OUTPUT SIGNAL.
1. Install control unit to fuse block (J/B).
2. Turn ignition switch to ON POSITION.
3. Check voltage between fuse block (J/B)
harness terminal
1Kand ground.
NG
OK
Check the following.

Rear window defogger
filament
(Refer to EL-213.)
CHECK CONTROL UNIT GROUND CIR-
CUIT.
Check continuity between fuse block (J/B)
terminal
1Band ground.
Continuity should exist.
OK
NG
Check the following.

15A fuse [No.14 ,15 ,
located in the fuse block
(J/B)]

Rear window defogger
relay
OK NG
Repair harness or connectors.
Replace
relay or fuse.
Replace control unit.
Condition Continuity
Rear window defogger
switch is“OFF”.No
Rear window defogger
switch is“ON”.Ye s
Condition Voltage [V]
Rear window defogger
switch is“OFF”.0
Rear window defogger
switch is“ON”.Approx. 12
YEL438B
Time control unit connector
YEL439B
Time control unit connector
YEL440B
Time control unit connector
YEL441B
Fuse block (J/B) connector
YEL442B
Super multiple junction (SMJ) connector






REAR WINDOW DEFOGGER AND DOOR MIRROR DEFOGGER
EL-212

Electrical Components Inspection
REAR WINDOW DEFOGGER RELAY
Check continuity between terminals
3and
5.
Condition Continuity
12V direct current supply between
terminals

1and
2Ye s
No current supply No
REAR WINDOW DEFOGGER SWITCH
Check continuity between terminals when rear window defogger
switch is pushed and released.
Terminals Condition Continuity

16-
14
Rear window defogger
switch is pushedYe s
Rear window defogger
switch is releasedNo
Filament Check
1. Attach probe circuit tester (in volt range) to middle portion of
each filament.

When measuring voltage, wrap tin foil around the top of
the negative probe. Then press the foil against the wire
with your finger.
YEL443B
YEL444B Rear window defogger switch
SEL263 6 volts (normal filament)
SEL122R Heat wire
Tester probe
Press
Tin foil
REAR WINDOW DEFOGGER AND DOOR MIRROR DEFOGGER
EL-213

2. If a filament is burned out, circuit tester registers 0 or 12 volts.
3. To locate burned out point, move probe to left and right along
filament. Test needle will swing abruptly when probe passes
the point.
Filament Repair
REPAIR EQUIPMENT
1. Conductive silver composition (Dupont No. 4817 or equiva-
lent)
2. Ruler 30 cm (11.8 in) long
3. Drawing pen
4. Heat gun
5. Alcohol
6. Cloth
REPAIRING PROCEDURE
1. Wipe broken heat wire and its surrounding area clean with a
cloth dampened in alcohol.
2. Apply a small amount of conductive silver composition to tip
of drawing pen.
Shake silver composition container before use.
3. Place ruler on glass along broken line. Deposit conductive
silver composition on break with drawing pen. Slightly over-
lap existing heat wire on both sides [preferably 5 mm (0.20
in)] of the break.
SEL265 Burned out point
12 volts
Burned out point
0 volts
SEL266
BE540 Heat wire
5 (0.20)
5 (0.20)Break
Ruler
Drawing penUnit: mm (in)
REAR WINDOW DEFOGGER AND DOOR MIRROR DEFOGGER
Filament Check (Cont’d)
EL-214

4. After repair has been completed, check repaired wire for
continuity. This check should be conducted 10 minutes after
silver composition is deposited.
Do not touch repaired area while test is being conducted.
5. Apply a constant stream of hot air directly to the repaired
area for approximately 20 minutes with a heat gun. A mini-
mum distance of 3 cm (1.2 in) should be kept between
repaired area and hot air outlet. If a heat gun is not available,
let the repaired area dry for 24 hours.
SEL012D Repaired point
SEL013D Repaired point
Heat gun
REAR WINDOW DEFOGGER AND DOOR MIRROR DEFOGGER
Filament Repair (Cont’d)
EL-215

Anti-theft System
NATS Audio Link
Description
The link with the NATS IMMU implies that the audio unit can basically only be operated if connected to the
matching NATS IMMU to which the audio unit was initially fitted on the production line.
Since radio operation is impossible after the link with the NATS is disrupted theft of the audio unit is basi-
cally useless since special equipment is required to reset the audio unit.
Initialization process for audio units that are linked to the NATS IMMU
New audio units will be delivered to the factories in the“NEW”state, i.e. ready to be linked with the vehi-
cle’s NATS. When the audio unit in“NEW”state is first switched on at the factory, it will start up communi-
cation with the vehicle’s immobiliser control unit (IMMU) and send a code (the“audio unit Code”)tothe
IMMU. The IMMU will then store this code, which is unique to each audio unit, in its (permanent) memory.
Upon receipt of the code by the IMMU, the NATS will confirm correct receipt of the audio unit code to the
audio unit. Hereafter, the audio unit will operate as normal.
During the initialisation process,“NEW”is displayed on the audio unit display. Normally though, communi-
cation between audio unit and IMMU takes such a short time (300 ms) that the audio unit seems to switch
on directly without showing“NEW”on its display.
Normal operation
Each time the audio unit is switched on afterwards, the audio unit code will be verified between the audio
unit and the NATS before the audio unit becomes operational. During the code verification process,“WAIT”
is shown on the audio unit display. Again, the communication takes such a short time (300 ms) that the audio
unit seems to switch on directly without showing“WAIT”on its display.
When the radio is locked
In case of a audio unit being linked with the vehicle’s NATS (immobilizer system), disconnection of the link
between the audio unit and the IMMU will cause the audio unit to switch into the lock (“SECURE”) mode in
which the audio unit is fully inoperative. Hence, repair of the audio unit is basically impossible, unless the
audio unit is reset to the“NEW”state for which special decoding equipment is required.
The radio manufacturer has provided their authorized service representatives with so called“decoder boxes”
which can bring the audio unit back to the“NEW”state, enabling the audio unit to be switched on after which
repair can be carried out. Subsequently, when the repaired audio unit is delivered to the final user again, it
will be in the“NEW”state as to enable re-linking the audio unit to the vehicle’s immobiliser system. As a
result of the above, repair of the audio unit can only be done by an authorized representative of the radio
manufacturer.
Service instruction
Item Radio linked with IMMU and/or SECU
Battery disconnection No additional action required
Radio needs repair Repair needs to be done by authorised representative of radio manufacturer since radio cannot
be operated unless it is reset to NEW state, using special decoding equipment
Replacement of radio by new part Radio is delivered in NEW state. If possible, the radio will automatically link up with the immobil-
iser system. If this appears not possible, the audio unit code needs to be manually input
Transferring radio to another
vehicle / replacement of radio by
an‘‘old’’partRadio needs to be reset to NEW state by authorised representative of radio manufacturer
Replacement of IMMU by new part Radio will request for the audio unit code input prior to establishing the link with the IMMU
Replacement of IMMU by old part If a radio code has already been stored in memory of the IMMU, the radio cannot be linked to it.
After switching on the radio, it will display‘‘SECURE’’after 1 minute. Operation can only be
established after resetting the ratio by an authorised representative of radio manufacturer
No communication from IMMU to radio Radio will display‘‘SECURE’’after 180 attempts to communicate with IMMU. Further use of radio
impossible until communication is established again, or after radio is reset by authorised repre-
sentative of (radio) manufacturer
AUDIO
EL-216

Audio unit code input procedure
1. Radio displays“CODE IN”after the power is switched ON.
2. Enter the audio unit code (4digits) by pressing the preset buttons (using 1 to 4).
Press the preset buttons for the necessary amount of times for the number of each digits.
e.g. the audio unit code is“5432”
Press No. 1 preset button for 5 times
Press No. 2 preset button for 4 times
Press No. 3 preset button for 3 times
Press No. 4 preset button for 2 times
3. Press the
button.
4. If the code is OK, the radio will power ON.
If the code is NG, the radio will be locked up as below. After the lock up, the radio will display“CODE
IN”again.
1st to 3rd attempt: The radio will be locked for 10 seconds after each attempt
4th to 20th attempt: The radio will be locked for 60 minutes after each attempt
Over 20th attempt: The radio will be locked completely
Speed Dependent Volume Control
Description
If activated, the radio output volume will be automatically adjusted to compensate for increasing driving
noises at higher driving speeds.
The radio receives a speed signal from the vehicle speed sensor (VSS) and selects the output volume.
Personal Audio Settings
Description
The radio is designed to store several settings (volume, bass, treble, preset stations and level of speed
dependent volume control) with every NATS ignition key used. Up to a maximum of 4 NATS keys can be
registered. During the communication as mentioned under“Anti-theft System”, the radio will recognize the
used ignition key and select the accompanying settings.
AUDIO
Anti-theft System (Cont’d)
EL-217

Schematic
YEL184C
IGNITION SWITCH
ACC or ONBATTERY
FUSE
FUSEFUSE COMBINATION
SWITCH (LIGHT-
ING SWITCH): RHD models
: With steering wheel switch
: With daytime light system
: Without daytime light system
: With CD auto changer
CD AUTO
CHANGER
AUDIO
TWEETER
LHFRONT
SPEAKER
RHTWEETER
RHREAR
SPEAKER
LHREAR
SPEAKER
RHDONGLE
CONTROL
UNIT
.DAYTIME
LIGHT
CONTROL
UNITDT
SOURCE
SWITCH
SPIRAL
CABLE
FRONT
SPEAKER
LHCOMBINATION
METER
(SPEEDOMETER)
ROOF
ANTENNA
AUDIO STEERING
WHEEL SWITCH SEEK
UP
SWITCH
VOLUME
SWITCH
SEEK
DOWN
SWITCH
SPECIAL
SWITCH
NATS
IMMU
AUDIO
EL-218