For USA and Canada

P1220 FUEL PUMP CONTROL MODULE (FPCM)

DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. PRECONDITIONING

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 between 12 - 15 V at idle.
-Before performing the following procedure, check that the engine coolant temperature is 10�C (14�F) or more.
- GO TO 2.

2. PERFORM DTC CONFIRMATION PROCEDURE

1.Start engine and let it idle for at least 5 seconds.
If engine does not start, crank engine for at least 5 seconds.
2.Check DTC.
Is DTC detected?
YES- Go to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK FPCM POWER SUPPLY CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect FPCM harness connector.
3.Turn ignition switch ON.
4.Check the voltage between FPCM harness connector and ground.





Is the inspection result normal?
YES- GO TO 2.
NO- GO TO 3.

2. DETECT MALFUNCTIONING PART

Check the following.
- 15 A fuse (No.73)
- Harness for open or short between FPCM and IPDM E/R
- Loose or poor connection for each connector and harness
- Repair open circuit, short to ground or short to power in harness or connectors.

3. CHECK FPCM GROUND CIRCUIT FOR OPEN AND SHORT

1.Turn ignition switch OFF.
2.Check the continuity between FPCM harness connector and ground.





3.Also check harness for short to power.
Is the inspection result normal?
YES- GO TO 4.
NO- Repair open circuit or short to power in harness or connectors.

4. CHECK FPCM INPUT AND OUTPUT CIRCUITS FOR OPEN AND SHORT

1.Disconnect ECM harness connector.
2.Check the continuity between FPCM harness connector and ECM harness connector.





3.Also check harness for short to ground and short to power.
Is the inspection result normal?
YES- GO TO 6.
NO- GO TO 5.

5. DETECT MALFUNCTIONING PART

Check the following.
- Harness for open or short between FPCM and ECM
- Loose or poor connection for each connector and harness
- Repair open circuit, short to ground or short to power in harness or connectors.

6. CHECK FUEL PUMP CONTROL CIRCUIT FOR OPEN AND SHORT

1.Disconnect fuel level sensor unit and fuel pump harness connector.
2.Check the continuity between FPCM harness connector and fuel level sensor unit and fuel pump harness connector.





3.Also check harness for short to ground and short to power.
Is the inspection result normal?
YES- GO TO 7.
NO- Repair open circuit, short to ground or short to power in harness or connectors.

7. CHECK FPCM

Refer to "Component Inspection (FPCM)" .
Is the inspection result normal?
YES- GO TO 8.
NO- Replace FPCM.

8. CHECK INTERMITTENT INCIDENT

Refer to "Intermittent Incident" Intermittent Incident.
- INSPECTION END


Component Inspection (FPCM)


1. CHECK FUEL PUMP CONTROL MODULE (FPCM)

1.Check the voltage between FPCM terminals under the following conditions.





Is the inspection result normal?
YES- INSPECTION END
NO- Replace FPCM.