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EC-1420
[YD (WITHOUT EURO-OBD)]
DTC P1272 FUEL PUMP
4. CHECK FUEL PUMP GROUND CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 29 and fuel pump terminal 1.
Refer to Wiring Diagram.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK FUEL PUMP
Refer to EC-1420, "
Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> GO TO 8.
6. CHECK FUEL RAIL PRESSURE SENSOR
Refer to EC-1312, "
Component Inspection" .
OK or NG
OK >> GO TO 7.
NG >> Replace fuel rail.
7. CHECK INTERMITTENT INCIDENT
Refer to EC-1260, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> GO TO 8.
NG >> Repair or replace.
8. REPLACE FUEL PUMP
1. Replace fuel pump.
2. Perform Fuel Pump Learning Value Clearing. Refer to EC-1221, "
Fuel Pump Learning Value Clearing" .
>> INSPECTION END
Component Inspection EBS012AP
FUEL PUMP
1. Check continuity between fuel supply pump terminals 1 and 2.
2. If NG, replace fuel pump.
Removal and Installation EBS0123W
FUEL RAIL
Refer to EM-157, "INJECTION TUBE AND FUEL INJECTOR" .
Continuity should exist.
Continuity should exist.
SEF807Z
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