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EC-1094
[YD (WITH EURO-OBD)]
DTC P0628, P0629 FUEL PUMP
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
On Board Diagnosis Logic EBS011C6
DTC Confirmation Procedure EBS011C7
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. Start engine and warm it up to normal operating temperature.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Let engine idle for at least 5 seconds.
4. If 1st trip DTC is detected, go to EC-1096, "
Diagnostic Proce-
dure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0628
Fuel pump control circuit
low input
ECM detects a control circuit for the fuel pump is
open or short to ground.
● Harness or connectors
(The fuel pump circuit is open or
shorted.)
● Fuel pump
P0629
Fuel pump control circuit
high output
ECM detects a control circuit for the fuel pump is
short to power.
SEF817Y
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