service reset NISSAN PICK-UP 1998 Repair Manual

NATS Audio Link/For Europe LHD (KA24E)
DESCRIPTION
The Europe LHD model with KA24E engine has a NATS-linked anti-theft function with radio as optional
equipment.
The link with the NATS IMMU implies that the radio can basically only be operated if connected to the
matching NATS IMMU to which the radio was initially fitted on the production line.
Since radio operation is impossible after the link with the NATS is disrupted theft of the radio unit is basi-
cally useless since special equipment is required to reset the radio.
Initialisation process for radios that are linked to the NATS IMMU
New radios will be delivered to the factories in the ``NEW'' state, i.e. ready to be linked with the vehicle's
NATS.
When the radio in ``NEW'' 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 ``Radio Code'') to the IMMU. The IMMU will
then store this code, which is unique to each radio, in its (permanent) memory.
Upon receipt of the code by the IMMU, the NATS will confirm correct receipt of the radio code to the radio.
Hereafter, the radio will operate as normal.
During the initialisation process, ``NEW'' is displayed on the radio display. Normally though, communication
between Radio and IMMU takes such a short time (300 ms) that the radio seems to switch on directly with-
out showing ``NEW'' on its display.
Normal operation
Each time the radio is switched on afterwards, the radio code will be verified between the radio unit and the
NATS before the radio becomes operational. During the code verification process, ``WAIT'' is shown on the
radio display. Again, the communication takes such a short time (300 ms) that the radio seems to switch on
directly without showing ``WAIT'' on its display.
When the radio is locked
In case of a radio being linked with the vehicle's NATS (immobiliser system), disconnection of the link
between the radio and the IMMU will cause the radio to switch into the lock (``SECURE'') mode in which the
radio unit is fully inoperative. Hence, repair of the radio is basically impossible, unless the radio is reset to
the ``NEW'' state for which special decoding equipment is required.
Both Blaupunkt and Clarion have provided their authorized service representatives with so called ``decoder
boxes'' which can bring the radio unit back to the ``NEW'' state, enabling the radio to be switched on after
which repair can be carried out. Subsequently, when the repaired radio is delivered to the final user again,
it will be in the ``NEW'' state as to enable re-linking the radio to the vehicle's immobiliser system. As a result
of the above, repair of the radio can only be done by an authorized Blaupunkt or Clarion representative.
Note:
Radio manufacturer of Nissan D22 models for Europe is ``Clarion''.
SERVICE PROCEDURE
Item Service procedure Description
Battery disconnection No additional action required. Ð
Radio needs repair Repair needs to be done by authorized represen-
tative of radio manufacturer since radio cannot
be operated unless it is reset to NEW state,
using special decoding equipment.Ð
Replacement of radio by new
partNo additional action required. Radio is delivered in NEW state.
Transferring radio to another
vehicle/replacement of radio
by an ``old'' partRadio needs to be reset to NEW state by autho-
rized representative of radio manufacturer.Ð
AUDIO
EL-144

Item Service procedure Description
Replacement of IMMU by
new partNo additional action required. The new IMMU will be recognized by the radio
since a ``blank'' code is stored in the memory of
the IMMU. In case the radio recognizes this
`blank'' code, it will request for input of the cor-
rect CATS code after which the radio will switch
back to the initialisation process.
Replacement of IMMU by old
partRadio needs to be reset to NEW state by autho-
rized representative of radio manufacturer.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.
No communication from
IMMU to radio1. If NATS is malfunctioning, check NATS sys-
tem.
2. After NATS is repaired, reset radio to NEW
state by authorized representative of radio
manufacture.After switching on the radio, the radio will display
``SECURE'' after 1 minute. Further use of radios
impossible until communication is established
again, or after radio is reset by authorized repre-
sentative of (radio) manufacturer.
NOTE: Authorized radio manufacturer representatives in Europe are listed in the technical bulletin
TB-EL 96-001 issued by Nissan Europe N.V.
AUDIO
NATS Audio Link/For Europe LHD (KA24E)
(Cont'd)
EL-145

Trouble Diagnoses Introduction
CAUTION:
lDo not use a circuit tester to check SRS harness connectors unless instructed to in this Service
Manual. SRS wiring harnesses can be identified with yellow harness protector or yellow insula-
tion tape before the harness connectors.
lDo not attempt to repair, splice or modify the SRS wiring harness. If the harness is damaged,
replace it with a new one.
lKeep ground portion clean.
DIAGNOSIS FUNCTION
The SRS self-diagnosis results can be read by using ``AIR BAG'' warning lamp and/or CONSULT. The
reading of these results is accomplished using one of two modes Ð ``User mode'' and ``Diagnosis mode''.
The User mode is exclusively prepared for the customer (driver). This mode warns the driver of a system
malfunction through the operation of the ``AIR BAG'' warning lamp.
The Diagnosis mode allows the technician to locate and inspect the malfunctioning part.
The mode applications for the ``AIR BAG'' warning lamp and CONSULT are as follows:
User mode Diagnosis mode Display type
``AIR BAG'' warning lamp X X ON-OFF operation
CONSULT Ð X Monitoring
DIAGNOSIS MODE FOR CONSULT
l``SELF-DIAG [CURRENT]''
A current Self-diagnosis result (also indicated by the warning lamp flashes in the Diagnosis mode) is
displayed on the CONSULT screen in real time. This refers to a malfunctioning part requiring repairs.
l``SELF-DIAG [PAST]''
Diagnosis results previously stored in the memory (also indicated by the warning lamp flashes in the
Diagnosis mode) are displayed on the CONSULT screen. The stored results are not erased until memory
erasing is executed.
l``TROUBLE DIAG RECORD''
With TROUBLE DIAG RECORD, diagnosis results previously erased by a reset operation can be dis-
played on the CONSULT screen.
lECU DISCRIMINATED NO.
The diagnosis sensor unit for each vehicle model is assigned
with its own, individual classification number. This number
will be displayed on the CONSULT screen, as shown at left.
When replacing the diagnosis sensor unit, refer to the part
number for the compatibility. After installation, replacement
with a correct unit can be checked by confirming this classi-
fication number on the CONSULT screen.
For NISSAN D22 4WD models, the diagnosis sensor unit
classification number assigned is 74.
SRS403
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS) Ð
4WD models
RS-22

NATS Audio Link/For Europe LHD (KA24E)
DESCRIPTION
The Europe LHD model with KA24E engine has a NATS-linked anti-theft function with radio as optional
equipment.
The link with the NATS IMMU implies that the radio can basically only be operated if connected to the
matching NATS IMMU to which the radio was initially fitted on the production line.
Since radio operation is impossible after the link with the NATS is disrupted theft of the radio unit is basi-
cally useless since special equipment is required to reset the radio.
Initialisation process for radios that are linked to the NATS IMMU
New radios will be delivered to the factories in the ``NEW'' state, i.e. ready to be linked with the vehicle's
NATS.
When the radio in ``NEW'' 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 ``Radio Code'') to the IMMU. The IMMU will
then store this code, which is unique to each radio, in its (permanent) memory.
Upon receipt of the code by the IMMU, the NATS will confirm correct receipt of the radio code to the radio.
Hereafter, the radio will operate as normal.
During the initialisation process, ``NEW'' is displayed on the radio display. Normally though, communication
between Radio and IMMU takes such a short time (300 ms) that the radio seems to switch on directly with-
out showing ``NEW'' on its display.
Normal operation
Each time the radio is switched on afterwards, the radio code will be verified between the radio unit and the
NATS before the radio becomes operational. During the code verification process, ``WAIT'' is shown on the
radio display. Again, the communication takes such a short time (300 ms) that the radio seems to switch on
directly without showing ``WAIT'' on its display.
When the radio is locked
In case of a radio being linked with the vehicle's NATS (immobiliser system), disconnection of the link
between the radio and the IMMU will cause the radio to switch into the lock (``SECURE'') mode in which the
radio unit is fully inoperative. Hence, repair of the radio is basically impossible, unless the radio is reset to
the ``NEW'' state for which special decoding equipment is required.
Both Blaupunkt and Clarion have provided their authorized service representatives with so called ``decoder
boxes'' which can bring the radio unit back to the ``NEW'' state, enabling the radio to be switched on after
which repair can be carried out. Subsequently, when the repaired radio is delivered to the final user again,
it will be in the ``NEW'' state as to enable re-linking the radio to the vehicle's immobiliser system. As a result
of the above, repair of the radio can only be done by an authorized Blaupunkt or Clarion representative.
Note:
Radio manufacturer of Nissan D22 models for Europe is ``Clarion''.
SERVICE PROCEDURE
Item Service procedure Description
Battery disconnection No additional action required. Ð
Radio needs repair Repair needs to be done by authorized represen-
tative of radio manufacturer since radio cannot
be operated unless it is reset to NEW state,
using special decoding equipment.Ð
Replacement of radio by new
partNo additional action required. Radio is delivered in NEW state.
Transferring radio to another
vehicle/replacement of radio
by an ``old'' partRadio needs to be reset to NEW state by autho-
rized representative of radio manufacturer.Ð
AUDIO
EL-144

Item Service procedure Description
Replacement of IMMU by
new partNo additional action required. The new IMMU will be recognized by the radio
since a ``blank'' code is stored in the memory of
the IMMU. In case the radio recognizes this
`blank'' code, it will request for input of the cor-
rect CATS code after which the radio will switch
back to the initialisation process.
Replacement of IMMU by old
partRadio needs to be reset to NEW state by autho-
rized representative of radio manufacturer.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.
No communication from
IMMU to radio1. If NATS is malfunctioning, check NATS sys-
tem.
2. After NATS is repaired, reset radio to NEW
state by authorized representative of radio
manufacture.After switching on the radio, the radio will display
``SECURE'' after 1 minute. Further use of radios
impossible until communication is established
again, or after radio is reset by authorized repre-
sentative of (radio) manufacturer.
NOTE: Authorized radio manufacturer representatives in Europe are listed in the technical bulletin
TB-EL 96-001 issued by Nissan Europe N.V.
AUDIO
NATS Audio Link/For Europe LHD (KA24E)
(Cont'd)
EL-145