Nissan Terrano model r20 series 2004. Manual — part 72
due to receiving external noise, degraded operation of ICs,
etc.
I
Keep ECM parts and harnesses dry.
I
Before replacing ECM, perform Terminals and Reference
Value inspection and make sure ECM functions properly.
Refer to EC-69.
I
If MI illuminates or blinks irregularly when engine is
running, water may have accumulated in fuel filter. Drain
water from fuel filter. If this does not correct the problem,
perform specified trouble diagnostic procedures.
I
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 Func-
tion Check” should be a good result if the repair is com-
pleted.
I
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.
I
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.
MEF040D
SAT652J
SEF348N
PRECAUTIONS
ZD30DDTi
Precautions (Cont’d)
EC-10
I
Do not disconnect pump harness connector with engine
running.
I
Do not disassemble electronic fuel injection pump.
If NG, take proper action.
I
Do not disassemble injection nozzle.
If NG, replace injection nozzle.
I
Even a slight leak in the air intake system can cause seri-
ous problems.
I
Do not shock or jar the crankshaft position sensor (TDC).
I
Do not depress accelerator pedal when starting.
I
Immediately after starting, do not rev up engine unneces-
sarily.
I
Do not rev up engine just prior to shutdown.
I
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 its installation loca-
tion.
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 electronic controls.
Do not let them run parallel for a long distance.
3) Adjust the antenna and feeder line so that the standing-
wave ratio can be kept smaller.
4) Be sure to ground the radio to vehicle body.
SEF437Y
SEF709Y
SEF708Y
PRECAUTIONS
ZD30DDTi
Precautions (Cont’d)
EC-11
Engine Control Component Parts Location
MEC988D
ENGINE AND EMISSION CONTROL OVERALL SYSTEM
ZD30DDTi
EC-12
MEC989D
ENGINE AND EMISSION CONTROL OVERALL SYSTEM
ZD30DDTi
Engine Control Component Parts Location
(Cont’d)
EC-13
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