battery location NISSAN PRIMERA 1999 Electronic Repair Manual

Engine Fuel & Emission Control System
NEF390 ECM (ECCS-D control module)
lDo not disassemble ECM.lIf a battery terminal is disconnected, the memory
will return to the ECM value.
The ECM will now start to self-control at its initial
value. Engine operation can vary slightly when
the terminal is disconnected. However, this is not
an indication of a problem. Do not replace parts
because of a slight variation.
lWhen ECM is removed for inspection, make sure
to ground the ECM mainframe.WIRELESS EQUIPMENT
lWhen installing C.B. ham radio or a mobile
phone, be sure to observe the following as it
may adversely affect electronic control sys-
tems depending on its installation location.
1) Keep the antenna as far as possible away
from the ECM.
2) Keep the antenna feeder line more than
20 cm (7.9 in) away from the harness of elec-
tronic controls.
Do not let them run parallel for a long dis-
tance.
3) Adjust the antenna and feeder line so that the
standing-wave ratio can be kept small.
4) Be sure to ground the radio to vehicle body.
ECM HARNESS HANDLING
lConnect ECM harness connectors securely.
A poor connection can cause an extremely
high (surge) voltage to develop in coil and
condenser, thus resulting in damage to ICs.
lKeep ECM harness at least 10 cm (3.9 in)
away from adjacent harnesses, to prevent an
ECM system malfunction due to receiving
external noise, degraded operation of ICs,
etc.
lKeep ECM parts and harnesses dry.lBefore removing parts, turn off ignition
switch and then disconnect battery ground
cable. WHEN STARTING
lDo not depress accelerator pedal when
starting.
lImmediately after starting, do not rev up
engine unnecessarily.
lDo not rev up engine just prior to shut-
down. ECM PARTS HANDLING
lHandle mass air flow sensor carefully to avoid
damage.
lDo not disassemble mass air flow sensor.lDo not clean mass air flow sensor with any type
of detergent.
lDo not disassemble No. 1 injection nozzle (built-
in needle lift sensor).
lEven a slight leak in the air intake system can
cause serious problems.
lDo not shock or jar the camshaft position sensor
(TDC). ELECTRONIC FUEL INJECTOR PUMP
lDo not disconnect pump harness connectors
with engine running.
lDo not disassemble or adjust electronic fuel
injection pump, except for the following
parts.
Camshaft position sensor (pump)
Injection timing control valve
Fuel cut solenoid valve BATTERY
lAlways use a 12 volt battery as power
source.
lDo not attempt to disconnect battery cables
while engine is running.
ECM mainframe
PRECAUTIONS AND PREPARATIONCD20T
EC-5

Trouble Diagnoses
Symptom Possible cause Repair order
None of the power windows can
be operated using any switch.1. 40A fusible link and circuit
breaker-1.
2. Grounds
B18andB27.
3. Power window relay.
4. Open/short in power window
main switch circuit.1. Check 40A fusible link (letter
e,located in fuse
and fusible link box) and circuit breaker-1. Turn
ignition switch to“ON”position and verify battery
positive voltage is present at terminal

12of
power window main switch, and other switches as
follows.
2. Check grounds
B18andB27.
3. Check power window relay.
4. Check W/R wire between fuse block (J/B) and
power window main switch for open/short circuit.
Driver’s side power window can-
not be operated but other win-
dows can be operated.1. Driver’s side power window
regulator circuit.
2. Driver’s side power window
regulator.1. Check driver’s side power window regulator circuit
2. Check driver’s side power window regulator
One or more passenger power
windows cannot be operated.1. Power window switches (front
sub-switch, rear sub-switch
RH, rear sub-switch LH).
2. Power window regulators.
(Passenger side, rear LH,
rear LH.)
3. Power window main switch.
4. Power window circuit.1. Check power window switches (front sub-switch,
rear sub-switch RH, rear sub-switch LH)
2. Check power window regulators (front sub-switch,
rear sub-switch RH, rear sub-switch LH)
3. Check power window main switch
4-1. Check harnesses between power window main
switch and power window sub-switches for
open/short circuit.
4-2. Check harnesses between power window sub-
switches and power window regulators for open/
short circuit.
One or more passenger power
windows cannot be operated
using power window main switch
but can be operated by power
window sub-switches.1. Power window main switch. 1. Check power window main switch.
Driver’s side power window auto
function cannot be operated
using power window main switch.1. Power window main switch. 1. Check power window main switch.
Location of sub-switch Terminals
Passenger

5
Rear RH
5
Rear LH
5
POWER WINDOW
EL-243

lBefore starting repairs which do not require battery power:
Turn off ignition switch.
Disconnect the negative battery terminal.
lTo prevent serious burns:
Avoid contact with hot metal parts.
Do not remove the radiator cap when the engine is hot.
lBefore servicing the vehicle:
Protect fenders, upholstery and carpeting with appropriate
covers.
Take care that keys, buckles or buttons do not scratch paint.
lClean all disassembled parts in the designated liquid or sol-
vent prior to inspection or assembly.
lReplace oil seals, gaskets, packings, O-rings, locking
washers, cotter pins, self-locking nuts, etc. with new ones.
lReplace inner and outer races of tapered roller bearings and
needle bearings as a set.
lArrange the disassembled parts in accordance with their
assembled locations and sequence.
lDo not touch the terminals of electrical components which
use microcomputers (such as ECMs).
Static electricity may damage internal electronic compo-
nents.
lAfter disconnecting vacuum or air hoses, attach a tag to
indicate the proper connection.
lUse only the fluids and lubricants specified in this manual.
lUse approved bonding agent, sealants or their equivalents
when required.
lUse tools and recommended special tools where specified
for safe and efficient service repairs.
lWhen repairing the fuel, oil, water, vacuum or exhaust
systems, check all affected lines for leaks.
lDispose of drained oil or solvent used for cleaning parts in
an appropriate manner.
SEF289H
SGI233
SGI234 Seat cover
Fender cover
PRECAUTIONS
General Precautions (Cont'd)
GI-5

Description
Number Item Description
p1Power conditionlThis shows the condition when the system receives battery positive voltage
(can be operated).
p2Fusible link
lThe double line shows that this is a fusible link.
lThe open circle shows current flow in, and the shaded circle shows current
flow out.
p3Fusible link/fuse locationlThis shows the location of the fusible link or fuse in the fusible link or fuse
box. For arrangement, refer to EL section (ªPOWER SUPPLY ROUTINGº).
p4Fuse
lThe single line shows that this is a fuse.
lThe open circle shows current flow in, and the shaded circle shows current
flow out.
p5Current ratinglThis shows the current rating of the fusible link or fuse.
p6Connectors
lThis shows that connectorE3is female and connectorM1is male.
lThe G/R wire is located in the 1A terminal of both connectors.
lTerminal number with an alphanumeric reference (1A, 5B, etc.) indicates that
the connector is an SMJ connector.
p7Optional splicelThe open circle shows that the splice is optional depending on vehicle appli-
cation.
p8SplicelThe shaded circle shows that the splice is always on the vehicle.
p9Page crossinglThis arrow shows that the circuit continues to an adjacent page.
lThe A will match with the A on the preceding or next page.
p10Common connectorlThe dotted lines between terminals show that these terminals are part of the
same connector.
p11Option abbreviationlThis shows that the circuit is optional depending on vehicle application.
p12RelaylThis shows an internal representation of the relay. For details, refer to EL sec-
tion (ªSTANDARDIZED RELAYº).
p13ConnectorslThis shows that the connector is connected to the body or a terminal with bolt
or nut.
p14Wire color
lThis shows a code for the color of the wire.
B = Black BR = Brown
W = White OR = Orange
R = Red P = Pink
G = Green PU = Purple
L = Blue GY = Gray
Y = Yellow SB = Sky Blue
LG = Light Green CH = Dark Brown
DG = Dark Green
When the wire color is striped, the base color is given first, followed by the
stripe color as shown below:
Example: L/W = Blue with White Stripe
p15Option descriptionlThis shows a description of the option abbreviation used on the page.
p16Switch
lThis shows that continuity exists between terminals 1 and 2 when the switch
is in the A position. Continuity exists between terminals 1 and 3 when the
switch is in the B position.
p17Assembly partslConnector terminal in component shows that it is a harness incorporated
assembly.
p18Cell codelThis identifies each page of the wiring diagram by section, system and wiring
diagram page number.
HOW TO READ WIRING DIAGRAMS
GI-13

NOTICE
Trouble diagnoses indicates work procedures required to diag-
nose problems effectively. Observe the following instructions
before diagnosing.
1) Before performing trouble diagnoses, read the ªPrelimi-
nary Checkº, the ªSymptom Chartº or the ªWork Flowº.
2) After repairs, re-check that the problem has been com-
pletely eliminated.
3) Refer to Component Parts and Harness Connector Loca-
tion for the Systems described in each section for
identification/location of components and harness con-
nectors.
4) Refer to the Circuit Diagram for Quick Pinpoint Check.
If you need to check circuit continuity between harness
connectors in more detail, such as when a sub-harness
is used, refer to Wiring Diagram in each individual sec-
tion and Harness Layout in EL section for identification
of harness connectors.
5) When checking circuit continuity, ignition switch should
be in the ªLOCKº position.
6) Before checking voltage at connectors, check battery
voltage.
7) After accomplishing the Diagnostic Procedures and
Electrical Components Inspection, make sure that all
harness connectors are reconnected as they were.
How to Follow Test Groups in Trouble
Diagnoses
Example Type A
SGI800-C
INSPECTION START
CHECK POWER SUPPLY.
1) Turn ignition switch to ªONº posi-
tion.
2) Check voltage between terminal
pband ground.
Battery voltage should exist
OK
ENG
Check the following
items.
1) Harness continuity
between camshaft
position sensor and
battery
2) Engine relay-1
3) ªBRº fusible link
4) Power source for
ECM
5) Ignition switch
CHECK GROUND CIRCUIT.
1) Turn ignition switch to ªOFFº posi-
tion.
2) Disconnect camshaft position sen-
sor harness connector.
3) Check resistance between termi-
nal
pdand ground.
Resistance:
Approximately 0W
OK
ENG
Check the following
items.
1) Harness continuity
between camshaft
position sensor and
ground
2) Ground circuit for
ECM
H
H
H
HOW TO FOLLOW TROUBLE DIAGNOSES
GI-35