P008B

P008B LOW FUEL PRESSURE CONTROL SYSTEM

DTC Logic


DTC DETECTION LOGIC







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.
- GO TO 2.

2. PERFORM DTC CONFIRMATION PROCEDURE

1.Start the engine and keep the engine speed at idle for 60 seconds.
2.Check 1st trip DTC.
Is 1st trip DTC detected?
YES- Proceed to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK FUEL PUMP CONTROL MODULE (FPCM) SIGNAL

Refer to "Component Inspection (FPCM)" For USA and Canada.
Is the inspection result normal?
YES- GO TO 2.
NO- Replace FPCM. Refer to "Removal and Installation" For USA and Canada.

2. CHECK FUEL PUMP CONTROL CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect FPCM harness connector and fuel level sensor unit and fuel pump harness connector.
3.Check the continuity between FPCM harness connector and fuel level sensor unit and fuel pump harness connector.





4.Also check harness for short to ground and short to power.
Is inspection result normal?
YES- Replace fuel level sensor unit and fuel pump (fuel pressure regulator malfunction). Refer to "Removal and Installation" Removal and Installation.
NO- Repair or replace error-detected parts.