Nissan Terrano r20e. Instruction — part 165
Engine Fuel & Emission Control System
MEC031E
PRECAUTIONS AND PREPARATION
TD27Ti
EC-297
Precautions
I
Before connecting or disconnecting the ECM harness
connector, turn ignition switch OFF and disconnect nega-
tive battery terminal. Failure to do so may damage the ECM
because battery voltage is applied to ECM even if ignition
switch is turned off.
I
When connecting ECM harness connector, tighten secur-
ing bolt until the gap between orange indicators disap-
pears.
: 3.0 - 5.0 N
⋅
m (0.3 - 0.5 kg-m, 26 - 43 in-lb)
I
When connecting ECM harness connector, open the ports
on harness connector then meet the ports with the pins on
ECM as shown. Push slider on harness connector until it
stops.
I
Before replacing ECM, perform Terminals and Reference
Value inspection and make sure ECM functions properly.
Refer to EC-346.
SEF289H
SEF308Q
NEF754
NEF755
MEF040D
PRECAUTIONS AND PREPARATION
TD27Ti
EC-298
I
If MI illuminates or flashes irregularly while the 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
“OVERALL FUNCTION CHECK” or “DTC (Diagnostic
Trouble Code) CONFIRMATION PROCEDURE”.
The DTC should not be displayed in the “DTC CONFIRMA-
TION PROCEDURE” if the repair is successful. The “OVER-
ALL FUNCTION CHECK” should indicate a good result if
the repair is completed successfully.
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.
SAT652J
SEF348N
PRECAUTIONS AND PREPARATION
TD27Ti
Precautions (Cont’d)
EC-299
Engine Control Component Parts Location
YEC234A
ENGINE AND EMISSION CONTROL OVERALL SYSTEM
TD27Ti
EC-300
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