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EC-1140
[YD (WITH EURO-OBD)]
DTC P1274 FUEL PUMP
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
On Board Diagnosis Logic EBS011E6
This self-diagnosis has the one trip detection logic.
DTC Confirmation Procedure EBS011E7
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.
WITH CONSULT-II
1. Tuning ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let idle for at least 5 seconds.
4. If DTC is detected, go to EC-1142, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1274 Fuel pump protection
Fuel pressure is too much higher than the target
value.
● Harness or connectors
(The fuel pump circuit is open or
shorted.)
● Fuel pump
● Fuel rail pressure sensor
SEF817Y
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