2001 NISSAN ALMERA N16 Ignition

Trouble DiagnosesNJEL0465DIAGNOSTIC PROCEDURENJEL0465S01SYMPTOM: Rear window defogger does not activate, or does
not go off after activating.
1 CHECK REAR WINDOW DEFOGGER OUTPUT SIGNAL
1. Turn ignition switch to ON position.
2. Check voltage between time control unit harness terminal 13 and ground.
SEL455X
OK or NG
OK©Check the following.
+Rear window defogger relay
(Refer to EL-146.)
+Rear window defogger circuit
+Rear window defogger filament
(Refer to EL-147.)
NG©GO TO 2.
2 CHECK DEFOGGER RELAY COIL SIDE CIRCUIT
1. Disconnect control unit connector.
2. Turn ignition switch to ON position.
3. Check voltage between time control unit terminal 13 and ground.
SEL456X
OK or NG
OK©GO TO 3.
NG©Check the following.
+10A fuse [No. 10, located in the fuse block (J/B)]
+Rear window defogger relay
+Harness for open or short between 10A fuse [No. 10, located in the fuse block (J/B)]
and rear window defogger relay
+Harness for open or short between rear window defogger relay and time control unit
REAR WINDOW DEFOGGER
Trouble Diagnoses
EL-143

3 CHECK REAR WINDOW DEFOGGER SWITCH INPUT SIGNAL
Check continuity between time control unit terminal 3 and ground.
SEL457X
OK or NG
OK©GO TO 4.
NG©Check the following.
+Rear window defogger switch
(Refer to EL-146.)
+Harness for open or short between time control unit and rear window defogger switch
+Rear window defogger switch ground circuit
4 CHECK POWER SUPPLY AND IGNITION INPUT SIGNAL
Check voltage between time control unit terminals 1 or 9 and ground.
SEL447X
OK or NG
OK©GO TO 5.
NG©Check the following.
+10A fuse or 15A fuse [No. 10 or No. 5, located in the fuse block (J/B)]
+Harness for open or short between time control unit and fuse
REAR WINDOW DEFOGGER
Trouble Diagnoses (Cont'd)
EL-144

System Description=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 LH (LHD models) or RH (RHD models), and pillar tweeter LH (LHD models) or RH (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
EL-149

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 (Cont'd)
EL-150

Trouble DiagnosesNJEL0385AUDIO UNITNJEL0385S05
Symptom Possible causes Repair order
Audio unit inoperative (no
digital display and no
sound from speakers).1. 10A fuse
2. Poor audio unit case ground
3. Audio unit1. Check 10A fuse [No. 1, located in fuse block (J/B)].
Turn ignition switch ON and verify that battery posi-
tive voltage is present at terminal 3 of audio unit.
2. Check audio unit case ground.
3. Remove audio unit for repair.
Audio unit presets are lost
when ignition switch is
turned OFF.1. 15A fuse
2. Audio unit1. Check 15A fuse [No. 32, located in fuse block (J/B)]
and verify that battery positive voltage is present at
terminal 9 of audio unit.
2. Remove audio unit for repair.
Individual rear speaker is
noisy or inoperative.1. Each speaker
2. Output circuit to each speaker1. Check speaker.
2. Check the output circuits to each speaker
+between audio unit and speaker amp.
+between speaker amp. and each speaker.
AM/FM stations are weak
or noisy.1. Roof antenna
2. Audio unit ground
3. Audio unit1. Check roof antenna.
2. Check audio unit ground condition.
3. Remove audio unit for repair.
Audio unit generates noise
in AM and FM modes with
engine running.1. Poor audio unit ground
2. Loose or missing ground bonding straps
3. Ignition condenser or rear window defog-
ger noise suppressor condenser
4. Ignition coil or secondary wiring
5. Audio unit1. Check audio unit ground.
2. Check ground bonding straps.
3. Replace ignition condenser or rear window defogger
noise suppressor condenser.
4. Check ignition coil and secondary wiring.
5. Remove audio unit for repair.
Audio unit generates noise
in AM and FM modes with
accessories on (switch
pops and motor noise).1. Poor audio unit ground
2. Antenna
3. Accessory ground
4. Faulty accessory1. Check audio unit ground.
2. Check antenna.
3. Check accessory ground.
4. Replace accessory.
CD AUTOCHANGERNJEL0385S06Testing Magazines and DiscsNJEL0385S06011. Confirm discs are installed correctly into the magazine (not upside down).
2. Visually inspect/compare the customer's discs with each other and other discs.
Identify any of the following conditions:
+Discs with a large outside diameter. [Normal size is 120 mm (4.72 in).]
+Discs with rough or lipped edges.
+Discs with excessive thickness [Normal size is 1.2 mm (0.047 in).]
+Discs with scratches, abrasions, or pits on the surface.
+Discs with grease/oil, fingerprints, foreign material.
+Discs are warped due to excessive heat exposure.
3. Slide/place the discs in and out of the various magazine positions.
Identify any discs and/or positions that require additional force for placement/ejection. If interference
(sticking, excessive tensions) is found, replace the magazine or the discs.
NOTE:
+Discs which are marginally out of specification (ex. dirty, scratched and so on) may play correctly
on a home stereo.
However, when used in the automotive environment skipping may occur due to the added vehicle
movement and/or vibration due to road conditions. Autochangers should not be replaced when
discs are at fault.
+Use a soft damp cloth to wipe the discs starting from the center outward in radial direction. Never
use chemical cleaning solutions to clean the discs.
AUDIO
Trouble Diagnoses
EL-160

Inspection=NJEL0221AUDIO UNITNJEL0221S01All voltage inspections are made with:
+Ignition switch ON or ACC
+Audio unit ON
+Audio unit connected (If audio unit is removed for inspection, supply a ground to the case using a jumper
wire.)
ANTENNANJEL0221S02Using a jumper wire, clip an auxiliary ground between antenna and body.
+If reception improves, check antenna ground (at body surface).
+If reception does not improve, check main feeder cable for short circuit or open circuit.
AUDIO
Inspection
EL-161

Trouble DiagnosesNJEL0225
Symptom Possible cause Repair order
Power sunroof cannot be operated
using any switch.1. 10A fuse, 30A fusible link and
M4 circuit breaker
2. Sunroof motor ground circuit
3. Sunroof switch
4. Sunroof switch circuit
5. Sunroof motor1. Check 10A fuse [No. 10, located in fuse block
(J/B)], 30A fusible link (letterE, located in fuse and
fusible link box) and M4 circuit breaker. Verify bat-
tery positive voltage is present at terminal 5 of sun-
roof motor. And then turn ignition switch ªONº and
verify battery positive voltage is present at terminal
5 of sunroof switch.
2. Check sunroof motor ground circuit.
3. Check sunroof switch.
4. Check harness between sunroof switch and sunroof
motor.
5. Check sunroof motor.
Power sunroof cannot be operated
using one of the sunroof switches.1. Sunroof switch
2. Sunroof switch circuit1. Check sunroof switch.
2. Check the harness between sunroof motor and sun-
roof switch.
POWER SUNROOF
Trouble Diagnoses
EL-166

System Description=NJEL0498Power is supplied at all times
+from 30A fusible link (letterE, located in the fuse and fusible link box)
+to circuit breaker terminal 1
+through circuit breaker terminal 2
+to power window relay terminal 5
With ignition switch in ON or START position, power is supplied
+through 10A fuse [No. 10, located in the fuse block (J/B)]
+to power window relay terminal 1
Ground is supplied to power window relay terminal 2
+through body grounds M28 and M67.
The power window relay is energized and power is supplied
+through power window relay terminal 3
+to power window main switch terminal 1,
+to front power window sub-switch terminal 5,
+to rear power window sub-switch LH and RH terminals 5 (models with rear power window).
MANUAL OPERATIONNJEL0498S01Front Door (Driver Side)NJEL0498S0101Ground is supplied
+to power window main switch terminal 3
+through body grounds M28 and M67.
WINDOW UP
When the driver's window switch in the power window main switch is pressed in the up position, power is
supplied
+through power window main switch terminal 9
+to driver side power window regulator terminal 1.
Ground is supplied
+through power window main switch terminal 2
+to driver side power window regulator terminal 8.
Then, the motor raises the window until the switch is released.
WINDOW DOWN
When the driver's window switch in the power window main switch is pressed in the down position, power is
supplied
+through power window main switch terminal 8
+to driver side power window regulator terminal 2.
Ground is supplied
+to driver side power window regulator terminal 1
+through power window main switch terminal 9.
Then, the motor lowers the window until the switch is released.
Front Door (Passenger Side)NJEL0498S0102Ground is supplied
+to power window main switch terminal 3
+through body grounds M28 and M67.
NOTE:
Numbers in parentheses are terminal numbers, when power window switch is pressed in the UP and DOWN
positions respectively.
POWER WINDOW MAIN SWITCH OPERATION
Power is supplied
+through power window main switch (5, 6)
+to front power window sub-switch (3, 4).
POWER WINDOW
System Description
EL-169