For Mexico

P0090 HIGH PRESSURE FUEL PUMP

DTC Logic


DTC DETECTION LOGIC

NOTE:
- If DTC P0090 is displayed with DTC P1197, first perform the trouble diagnosis for DTC P1197.
- DTC P0090 may be displayed when running out of gas.






DTC CONFIRMATION PROCEDURE


1. PRECONDITIONING

If DTC CONFIRMATION PROCEDURE has been previously conducted, always perform the following procedure before conducting the next test.
1.Turn ignition switch OFF and wait at least 10 seconds.
2.Turn ignition switch ON.
3.Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
-Before performing the following procedure, confirm that battery voltage is 11 V or more at idle.
-Before performing the following procedure, check that the fuel tank is 1/8 full of fuel.
- GO TO 2.

2. PERFORM DTC CONFIRMATION PROCEDURE-I

WITH CONSULT
1.Start engine.
2.Select "COOLAN TEMP/S" in "DATA MONITOR" mode of "ENGNE" using CONSULT.
3.Maintain the following condition for 5 seconds or more at idle.





4.Check 1st trip DTC.
WITH GST
Follow the above steps for "WITH CONSULT".
Is 1st trip DTC detected?
YES- Proceed to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK HIGH PRESSURE FUEL PUMP CIRCUIT

1.Turn ignition switch ON.
2.Disconnect ECM harness connector and high pressure fuel pump harness connector.
3.Check the continuity between ECM harness connector and high pressure fuel pump harness connector.





4.Also check harness for short to ground and to power.
Is inspection result normal?
YES- GO TO 2.
NO- Repair or replace the error-detected parts.

2. CHECK HIGH PRESSURE FUEL PUMP

Check high pressure fuel pump. Refer to "Component Inspection (High Pressure Fuel Pump)" .
Is inspection result normal?
YES- Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
NO- Replace the error-detected parts.


Component Inspection (High Pressure Fuel Pump)


1. CHECK HIGH PRESSURE FUEL PUMP-1

1.Turn ignition switch OFF.
2.Disconnect high pressure fuel pump harness connector.
3.Check the resistance between high pressure fuel pump terminals.





Is the inspection result normal?
YES- GO TO 2.
NO- Replace high pressure fuel pump. Refer to "Exploded View" Exploded View.

2. CHECK HIGH PRESSURE FUEL PUMP-2

WITH CONSULT
1.Reconnect high pressure fuel pump harness connector.
2.Start the engine.
3.Check "FUEL PRES SEN" in "DATA MONITOR" mode of "ECM" using CONSULT.





WITHOUT CONSULT
1.Reconnect high pressure fuel pump harness connector.
2.Start the engine.
3.Check FRP sensor signal voltage.





Is the inspection result normal?
YES- INSPECTION END
NO- Replace high pressure fuel pump. Refer to "Exploded View" Exploded View.