Nissan Primera P12. Instruction — part 208
PRECAUTIONS
EC-17
[YD (WITH EURO-OBD)]
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EC
●
Do not disassemble ECM.
●
When
connecting
ECM
harness
connector,
fasten
it
securely with levers as far as they will go as shown in the
figure.
●
When connecting or disconnecting pin connectors into or
from ECM, take care not to damage pin terminals (bend or
break).
Make sure that there are not any bends or breaks on ECM
pin terminal, when connecting pin connectors.
●
Securely connect ECM harness connectors.
A poor connection can cause an extremely high (surge)
voltage to develop in coil and condenser, thus resulting in
damage to IC's.
●
Keep engine control system harness at least 10cm (4 in)
away from adjacent harness, to prevent engine control sys-
tem malfunctions due to receiving external noise, degraded
operation of IC's, etc.
●
Keep engine control system parts and harness dry.
●
Before replacing ECM, perform ECM Terminals and Refer-
ence Value inspection and make sure ECM functions prop-
erly. Refer to
EC-57, "ECM Terminals And Reference Value"
.
●
Handle mass air flow sensor carefully to avoid damage.
●
Do not disassemble mass air flow sensor.
●
Do not clean mass air flow sensor with any type of deter-
gent.
●
Even a slight leak in the air intake system can cause seri-
ous incidents.
●
Do not shock or jar the camshaft position sensor, crank-
shaft position sensor.
MBIB0625E
MBIB0145E
SEF291H
MEF040D
EC-18
[YD (WITH EURO-OBD)]
PRECAUTIONS
●
After performing each TROUBLE DIAGNOSIS, perform DTC
Confirmation Procedure or Overall Function Check.
The DTC should not be displayed in the DTC Confirmation
Procedure if the repair is completed. The Overall Function
Check should be a good result if the repair is completed.
●
When measuring ECM signals with a circuit tester, never
allow the two tester probes to contact.
Accidental contact of probes will cause a short circuit and
damage the ECM power transistor.
●
Do not use ECM ground terminals when measuring input/
output voltage. Doing so may result in damage to the ECM's
transistor. Use a ground other than ECM terminals, such as
the ground.
●
Do not disassemble fuel pump.
If NG, take proper action.
●
Do not disassemble fuel injector.
If NG, replace fuel injector.
●
Do not depress accelerator pedal when staring.
●
Immediately after staring, do not rev up engine unnecessar-
ily.
●
Do not rev up engine just prior to shutdown.
●
When installing C.B. ham radio or a mobile phone, be sure
to observe the following as it may adversely affect elec-
tronic control systems depending on installation location.
–
Keep the antenna as far as possible from the electronic
control units.
–
Keep the antenna feeder line more than 20 cm (8 in) away
from the harness of electronic controls.
Do not let them run parallel for a long distance.
–
Adjust the antenna and feeder line so that the standingwave
radio can be kept smaller.
–
Be sure to ground the radio to vehicle body.
SAT652J
SEF348N
SEF709Y
SEF708Y
PRECAUTIONS
EC-19
[YD (WITH EURO-OBD)]
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Wiring Diagrams and Trouble Diagnosis
EBS013IZ
When you read Wiring diagrams, refer to the following:
●
GI-14, "How to Read Wiring Diagrams"
●
for power distribution circuit
When you perform trouble diagnosis, refer to the following:
●
GI-11, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES"
.
●
GI-24, "How to Perform Efficient Diagnosis for an Electrical Incident"
.
EC-20
[YD (WITH EURO-OBD)]
PREPARATION
PREPARATION
PFP:00002
Special Service Tools
EBS013J0
Commercial Service Tools
EBS013J1
Tool number
Tool name
Description
EG17650301
Radiator cap tester
adapter
Adapting radiator cap tester to radiator cap and
radiator filler neck
a: 28 (1.10) dia.
b: 31.4 (1.236) dia.
c: 41.3 (1.626) dia.
Unit: mm (in)
KV109E0010
Break-out box
Measuring the ECM signals with a circuit tester
KV109E0080
Y-cable adapter
Measuring the ECM signals with a circuit tester
S-NT564
S-NT825
S-NT826
Tool name
Description
Socket wrench
Removing and installing engine coolant
temperature sensor
S-NT705
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