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SEF256X
WITH GST
NHEC0170S02
1) Start engine and warm it up to normal operating temperature.
2) Turn ignition switch “OFF” and wait at least 10 seconds.
3) Disconnect mass air flow sensor harness connector. Then
restart and run engine for at least 5 seconds at idle speed.
4) Stop engine and reconnect mass air flow sensor harness con-
nector.
5) Select “MODE 7” with GST. Make sure 1st trip DTC P0100 is
detected.
6) Select “MODE 4” with GST and erase the 1st trip DTC P0100.
7) Start engine again and let it idle for at least 10 minutes.
8) Select “MODE 7” with GST. The 1st trip DTC P0171 or P0174
should be detected at this stage, if a malfunction exists. If so,
go to “Diagnostic Procedure”, EC-296.
9) If it is difficult to start engine at step 7, the fuel injection sys-
tem has a malfunction.
10) Crank engine while depressing accelerator pedal. If engine
starts, go to “Diagnostic Procedure”, EC-296. If engine does
not start, check exhaust and intake air leak visually.
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0171 (BANK 1), P0174 (BANK 2) FUEL INJECTION SYSTEM FUNCTION
(LEAN)
DTC Confirmation Procedure (Cont’d)
EC-293
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