DTC    P1228    Injection Pump Fuel Metering Control "A" Range / Performance (Cam / Rotor / Injector)

for Preparation Click here


DESCRIPTION


P1228 
DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
Ignition switch ON for 1 second
Open or short in suction control valve circuit in supply pump for more than 0.1 seconds.
(1 trip detection logic)
  1. Open or short in suction control valve circuit
  2. Suction control valve (supply pump assembly)
  3. ECM

Related Data List 
DTC No.
Data List
P1228
Target Common Rail Pressure
Fuel Press

HINT:
  1. If DTC P1228 is stored, the following symptoms may appear:
    1. Lack of power due to fail-safe operation
  2. When DTC P1228 is stored, check the internal fuel pressure of the common rail by entering the following menus on the intelligent tester: Powertrain / Engine and ECT / Data List / Fuel Press and Target Common Rail Pressure. Under a stable operating condition such as idling, Fuel Press is within +/-10 MPa of Target Common Rail Pressure (Reference).
  3. When DTC P1228 is stored, check the Target Pump SCV Current by entering the following menus on the intelligent tester: Powertrain / Engine and ECT / Data List / Target Pump SCV Current. Under a stable operating condition such as idling, Target Pump SCV Current is less than 1530 mA. If the Target Pump SCV Current is 1530 mA or more, the suction control valve (supply pump assembly) or the suction control valve circuit may have a malfunction.


WIRING DIAGRAM


A198995E05


INSPECTION PROCEDURE

NOTICE:
  1. When replacing the ECM, the ECM needs Registration and Initialization (Click here).
  2. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT:
  1. When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the intelligent tester. Then after installing the new ECM, perform all of the initializations/registrations for the "Learning Values Write" function by following the instructions shown on the tester display.
  2. Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.

1.INSPECT SUPPLY PUMP ASSEMBLY (SUCTION CONTROL VALVE)


    A200354E01

  1. Disconnect the suction control valve connector in the supply pump assembly.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    1 - 2
    		20°C (68°F)
    		2.60 to 3.15 Ω

    Text in Illustration 
    *1
    		Component without harness connected
    (Supply Pump Assembly)

  1. Reconnect the suction control valve connector.



NG
Go to step 8
OK


2.CHECK HARNESS AND CONNECTOR (SUCTION CONTROL VALVE - ECM)


    A200291E02

  1. Disconnect the suction control valve connector.

  1. Disconnect the ECM connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance (Check for Open):
    Tester Connection
    		Condition
    		Specified Condition
    B42-2 - B9-12 (PCV)
    		Always
    		Below 1 Ω

    Standard Resistance (Check for Short):
    Tester Connection
    		Condition
    		Specified Condition
    B42-2 or B9-12 (PCV) - Body ground
    		Always
    		10 kΩ or higher

    Text in Illustration 
    *1
    		Front view of wire harness connector
    (to Suction Control Valve)
    *2
    		Front view of wire harness connector
    (to ECM)

  1. Reconnect the suction control valve connector.

  1. Reconnect the ECM connector.



NG
Go to step 7
OK


3.CHECK HARNESS AND CONNECTOR (SUCTION CONTROL VALVE - INTEGRATION RELAY)


    A200297E01

  1. Disconnect the suction control valve connector.

  1. Disconnect the integration relay connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance (Check for Open):
    Tester Connection
    		Condition
    		Specified Condition
    B42-1 - 1F-11
    		Always
    		Below 1 Ω

    Standard Resistance (Check for Short):
    Tester Connection
    		Condition
    		Specified Condition
    B42-1 or 1F-11 - Body ground
    		Always
    		10 kΩ or higher

    Text in Illustration 
    *1
    		Front view of wire harness connector
    (to Suction Control Valve)
    *2
    		Front view of wire harness connector
    (to Integration Relay)
    *3
    		Engine Room Relay Block

  1. Reconnect the suction control valve connector.

  1. Reconnect the integration relay connector.



NG
Go to step 7
OK


4.CHECK ECM POWER SOURCE CIRCUIT

  1. Check the ECM power source circuit (Click here).


NEXT


5.CHECK WHETHER DTC OUTPUT RECURS

  1. Connect the intelligent tester to the DLC3.

  1. Clear the DTCs (Click here).

  1. Turn the ignition switch off and wait for 30 seconds or more.

  1. Turn the ignition switch to ON and wait for 1 second or more.

  1. Enter the following menus: Powertrain / Engine and ECT / DTC.

  1. Read the DTCs.
    Result 
    Result
    		Proceed to
    DTC P1228
    		A
    No DTC output
    		B



B
CHECK FOR INTERMITTENT PROBLEMS (Click here)
A


6.REPLACE ECM

  1. Replace the ECM (Click here).



NEXT
Go to step 10

7.REPAIR OR REPLACE HARNESS OR CONNECTOR


NEXT
Go to step 10

8.REPLACE SUPPLY PUMP ASSEMBLY

  1. Replace the supply pump assembly (Click here).


NEXT


9.BLEED AIR FROM FUEL SYSTEM

  1. Bleed air from fuel system (Click here).


NEXT


10.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

  1. Connect the intelligent tester to the DLC3.

  1. Clear the DTCs (Click here).

  1. Turn the ignition switch off and wait for 30 seconds or more.

  1. Turn the ignition switch to ON and wait for 1 second or more.

  1. Enter the following menus: Powertrain / Engine and ECT / DTC.

  1. Confirm that the DTC is not output again.


NEXT

END