2001 NISSAN ALMERA Ignition system

System Description/HatchbackNJEL0456WIPER OPERATIONNJEL0456S01The wiper switch is controlled by a lever built into the combination switch.
There are three wiper switch positions:
+LO speed
+HI speed
+INT (Intermittent)
With the ignition switch in the ON or START position, power is supplied
+through 20A fuse [No. 25, located in the fuse block (J/B)]
+to front wiper motor terminal 5 and front wiper relay terminal 2.
Low and High Speed Wiper OperationNJEL0456S0101Ground is supplied to wiper and washer switch terminal 17 through body grounds E30 and E73.
When the wiper switch is placed in the LO position, ground is supplied
+through terminal 14 of the front wiper and washer switch
+to front wiper motor terminal 2.
With power and ground supplied, the wiper motor operates at low speed.
When the wiper switch is placed in the HI position, ground is supplied
+through terminal 16 of the front wiper and washer switch
+to wiper motor terminal 1.
With power and ground supplied, the wiper motor operates at high speed.
Auto Stop OperationNJEL0456S0102With wiper switch turned OFF, wiper motor will continue to operate until wiper arms reach windshield base.
When wiper arms are not located at base of windshield with wiper switch OFF, ground is provided
+from terminal 14 of the front wiper and washer switch
+to front wiper motor terminal 2, in order to continue wiper motor operation at low speed.
Ground is also supplied
+through terminal 13 of the front wiper and washer switch
+to front wiper relay terminal 3
+through terminal 4 of the front wiper relay.
+to front wiper motor terminal 3
+through terminal 4 of front wiper motor
+through body grounds E30 and E73.
When wiper arms reach base of windshield, front wiper motor terminals 3 and 5 are connected instead of ter-
minals 3 and 4. Wiper motor will then stop wiper arms at the STOP position.
Intermittent OperationNJEL0456S0103The front wiper motor operates the wiper arms one time at low speed at a set interval of approximately 1 to
13 seconds. This feature is controlled by the wiper amplifier (INT SW) combined with front wiper switch.
When the wiper switch is placed in the INT position, ground is supplied to wiper amplifier (WIPER SW INT)
and (ACC).
The desired interval time is input to wiper amplifier (INT VR) from wiper volume switch combined with front
wiper and washer switch.
Then intermittent ground is supplied
+from body grounds E30 and E73
+through terminal 5 of front wiper relay,
+through terminal 3 of front wiper relay,
+through terminal 13 of front wiper switch and,
+through terminal 14 of front wiper switch
+to terminal 2 of front wiper motor.
The desired interval time is input
+to front wiper relay terminal 1
+from terminal 20 of front wiper switch
FRONT WIPER AND WASHER
System Description/Hatchback
EL-218

WASHER OPERATIONNJEL0456S02With the ignition switch in the ON or START position, power is supplied
+through 10A fuse [No. 27, located in the fuse block (J/B)]
+to front wiper switch terminal 5.
When the lever is pulled to the WASH/F position, ground is supplied
+from body grounds E30 and E73,
+through terminal 4 of the front wiper switch, and
+through terminal 18 of the frotn wiper switch
+to front washer motor terminal 2.
With power and ground supplied, the washer motor operates.
When the lever is pulled to the WASH position for one second or more, the wiper motor operates at low speed
for approximately 3 seconds to clean windshield. This feature is controlled by the wiper amplifier in the same
manner as the intermittent operation.
FRONT WIPER AND WASHER
System Description/Hatchback (Cont'd)
EL-219

System Description/Sedan=NJEL0378LHD MODELSNJEL0378S01The rear window defogger system is controlled by the time control unit. The rear window defogger operates
only for approximately 15 minutes.
Power is supplied at all times
+through 20A fuse [No. 7, located in the fuse block (J/B)]
+to rear window defogger relay terminal 3
+through 10A fuse [No. 13, located in the fuse block (J/B)]
+to rear window defogger relay terminal 6
+through 10A fuse [No. 12, located in the fuse block (J/B)]
+to time control unit terminal 1.
With the ignition switch in the ON or START position, power is supplied
+through 10A fuse [No. 10, located in the fuse block (J/B)]
+to the rear window defogger relay terminal 1 and
+to time control unit terminal 17.
Ground is supplied
+through body grounds M28 and M67
+to terminal 5 of the rear window defogger switch.
When the rear defogger switch is turned ON, ground is supplied
+through terminal 3 of the rear defogger switch
+to time control unit terminal 35.
Terminal 27 of time control unit then supplies ground to the rear window defogger relay terminal 2.
With power and ground supplied, the rear window defogger relay is energized.
Power is supplied
+through terminals 5 and 7 of the rear window defogger relay and
+to the rear window defogger and door mirror defogger.
The rear window defogger has an independent ground.
With power and ground supplied, the rear window defogger filaments heat and defog the rear window.
When the system is activated, the rear window defogger indicator illuminates in the rear window defogger
switch.
RHD MODELSNJEL0378S02The rear window defogger system is controlled by the time control unit. The rear window defogger operates
only for approximately 15 minutes.
Power is supplied at all times
+through 20A fuse [No. 7, located in the fuse block (J/B)]
+to rear window defogger relay terminal 5
+through 10A fuse [No. 12, located in the fuse block (J/B)]
+to time control unit terminal 1.
With the ignition switch in the ON or START position, power is supplied
+through 10A fuse [No. 10, located in the fuse block (J/B)]
+to the rear window defogger relay terminal 1 and
+to time control unit terminal 17.
Ground is supplied
+through body grounds M28 and M67
+to terminal 5 of the rear window defogger switch.
When the rear defogger switch is turned ON, ground is supplied
+through terminal 3 of the rear defogger switch
+to time control unit terminal 35.
Terminal 27 of time control unit then supplies ground to the rear window defogger relay terminal 2.
With power and ground supplied, the rear window defogger relay is energized.
Power is supplied
+through terminal 3 of the rear window defogger relay and
REAR WINDOW DEFOGGER
System Description/Sedan
EL-240

System Description/Hatchback=NJEL0463The rear window defogger system is controlled by the time control unit. The rear window defogger operates
only for approximately 15 minutes.
Power is supplied at all times
+through 20A fuse [No. 7, located in the fuse block (J/B)]
+to rear window defogger relay terminal 5 (B7 relay models) or 3 (B6 relay models)
+through 10A fuse [No. 13, located in the fuse block (J/B)]
+to rear window defogger relay terminal 6 (B6 relay models).
+through 15A fuse [No. 5, located in the fuse block (J/B)]
+to time control unit terminal 9.
With the ignition switch in the ON or START position, power is supplied
+through 10A fuse [No. 10, located in the fuse block (J/B)]
+to the rear window defogger relay terminal 1 and
+to time control unit terminal 1.
Ground is supplied to terminal 5 of the rear window defogger switch through body grounds M28 and M67.
When the rear defogger switch is turned ON, ground is supplied
+through terminal 3 of the rear defogger switch
+to time control unit terminal 3.
Terminal 13 of time control unit then supplies ground to the rear window defogger relay terminal 2.
With power and ground supplied, the rear window defogger relay is energized.
Power is supplied
+through terminals 5 and 7 of the rear window defogger relay (B6 relay models) or
+through terminal 3 of the rear window defogger relay (B7 relay models)
+to the rear window defogger and door mirror defogger.
The rear window defogger has an independent ground.
With power and ground supplied, the rear window defogger filaments heat and defog the rear window.
When the system is activated, the rear window defogger indicator illuminates in the rear window defogger
switch.
REAR WINDOW DEFOGGER
System Description/Hatchback
EL-249

System Description/Sedan=NJEL0381Refer to Owner's Manual for audio system operating instructions.
Power is supplied at all times
+through 15A fuse (No. 32, located in the fusible link and fuse block)
+to audio unit terminal 9
+to CD auto changer terminal 32.
With the ignition switch in the ACC or ON position, power is supplied
+through 10A fuse [No. 1, located in the fuse block (J/B)]
+to audio unit terminal 3,
+to CD auto changer terminal 36
Ground is supplied through the case of the audio unit.
Audio signals are supplied
+through audio unit terminals 7, 10, 11, 12, 13, 14, 15, 16
+to terminals 1 and 2 of front door speaker LH and RH,
+to terminals 1 and 2 of rear door speaker LH and RH and
+to terminals 1 and 2 of pillar tweeter LH and RH (with 6 speakers)
When the navigation system is triggered,
power is supplied
+through navi control unit terminal 46
+to speaker relay terminal 2
Ground is supplied
+through navi control unit terminal 44
+to speaker relay terminal 1
With power and ground supplied, the relay is energized, and then audio signal is interrupted to front door
speaker RH (LHD models) or LH (RHD models), and pillar tweeter RH (LHD models) or LH (RHD models)
For detailed, refer to ªNAVIGATION SYSTEMº.
NATS AUDIO LINKNJEL0381S04DescriptionNJEL0381S0401The 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 basically
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 ªNEWº state, i.e. ready to be linked with the vehicle's
NATS. When the audio unit in ªNEWº state is first switched on at the factory, it will start up communication
with the vehicle's immobiliser control unit (IMMU) and send a code (the ªaudio unit Codeº) to the 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, ªNEWº is displayed on the audio unit display. Normally though, communica-
tion between audio unit and IMMU takes such a short time (300 ms) that the audio unit seems to switch on
directly without showing ªNEWº 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, ªWAITº 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 ªWAITº 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 (ªSECUREº) 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 ªNEWº state for which special decoding equipment is required.
Clarion has provided their authorized service representatives with so called ªdecoder boxesº which can bring
the audio unit back to the ªNEWº state, enabling the audio unit to be switched on after which repair can be
AUDIO
System Description/Sedan
EL-258

carried out. Subsequently, when the repaired audio unit is delivered to the final user again, it will be in the
ªNEWº 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 Clarion representative.
SPEED DEPENDENT VOLUME CONTROLNJEL0381S06DescriptionNJEL0381S0601If 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 SETTINGSNJEL0381S07DescriptionNJEL0381S0701The 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 reg-
istered. During the communication as mentioned under ªAnti-Theft Systemº, the radio will recognize the used
ignition key and select the accompanying settings.
AUDIO
System Description/Sedan (Cont'd)
EL-259

System Description/Hatchback=NJEL0497Refer to Owner's Manual for audio system operating instructions.
Power is supplied at all times
+through 15A fuse (No. 32, located in the fusible link and fuse block)
+to audio unit terminal 9
+to CD auto changer terminal 32.
With the ignition switch in the ACC or ON position, power is supplied
+through 10A fuse [No. 1, located in the fuse block (J/B)]
+to audio unit terminal 3,
+to CD auto changer terminal 36 and
Ground is supplied through the case of the audio unit.
Audio signals are supplied
+through audio unit terminals 7, 10, 11, 12, 13, 14, 15, 16
+to terminals 1 and 2 of front door speaker LH and RH,
+to terminals 1 and 2 of rear door speaker LH and RH and
+to terminals 1 and 2 of pillar tweeter LH and RH (with 6 speakers)
When the navigation system is triggered,
power is supplied
+through navi control unit terminal 46
+to speaker relay terminal 2
Ground is supplied
+through navi control unit terminal 44
+to speaker relay terminal 1
With power and ground supplied, the relay is energized, and then audio signal is interrupted to front door
speaker RH (LHD models) or LH (RHD models), and pillar tweeter RH (LHD models) or LH (RHD models)
For detailed, refer to ªNAVIGATION SYSTEMº.
NATS AUDIO LINKNJEL0497S01DescriptionNJEL0497S0101The 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 basically
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 ªNEWº state, i.e. ready to be linked with the vehicle's
NATS. When the audio unit in ªNEWº state is first switched on at the factory, it will start up communication
with the vehicle's immobiliser control unit (IMMU) and send a code (the ªaudio unit Codeº) to the 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, ªNEWº is displayed on the audio unit display. Normally though, communica-
tion between audio unit and IMMU takes such a short time (300 ms) that the audio unit seems to switch on
directly without showing ªNEWº 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, ªWAITº 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 ªWAITº 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 (ªSECUREº) 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 ªNEWº state for which special decoding equipment is required.
Clarion has provided their authorized service representatives with so called ªdecoder boxesº which can bring
the audio unit back to the ªNEWº state, enabling the audio unit to be switched on after which repair can be
AUDIO
System Description/Hatchback
EL-269

carried out. Subsequently, when the repaired audio unit is delivered to the final user again, it will be in the
ªNEWº 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 Clarion representative.
SPEED DEPENDENT VOLUME CONTROLNJEL0497S02DescriptionNJEL0497S0201If 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 SETTINGSNJEL0497S03DescriptionNJEL0497S0301The 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 reg-
istered. During the communication as mentioned under ªNATS audio linkº, the radio will recognize the used
ignition key and select the accompanying settings.
AUDIO
System Description/Hatchback (Cont'd)
EL-270