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SEC220B
Component Description
NHEC0271
The ECM consists of a microcomputer and connectors for signal
input and output and for power supply. The unit controls the engine.
On Board Diagnosis Logic
NHEC0272
Malfunction is detected when ECM calculation function is
malfunctioning.
Possible Cause
NHEC0518
I ECM
DTC Confirmation Procedure
NHEC0273
NOTE:
If “DTC Confirmation Procedure” has been previously conducted,
always turn ignition switch “OFF” and wait at least 10 seconds
before conducting the next test.
SEF058Y
WITH CONSULT-II
NHEC0273S01
1) Turn ignition switch “ON”.
2) Select “DATA MONITOR” mode with CONSULT-II.
3) Start engine.
4) Run engine for at least 30 seconds at idle speed.
5) If 1st trip DTC is detected, go to “Diagnostic Procedure”,
EC-450.
WITH GST
NHEC0273S02
Follow the procedure “WITH CONSULT-II” above.
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0605 ECM
Component Description
EC-449
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