DTC Code | DTC Name |
---|---|
P1228 | Injection Pump Fuel Metering Control "A" Range / Performance (Cam / Rotor / Injector) |
DESCRIPTION
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) |
|
DTC No. | Data List |
---|---|
P1228 |
|
Tech Tips
If DTC P1228 is stored, the following symptoms may appear:
Lack of power due to fail-safe operation
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 +/-10000 kPa of Target Common Rail Pressure (Reference).
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
CAUTION / NOTICE / HINT
Note
When replacing the ECM, the ECM needs Registration and Initialization Click here.
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
Tech Tips
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 initialization/registrations for the "Learning Values Write" function by following the instructions shown on the tester display.
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.
PROCEDURE
INSPECT SUPPLY PUMP ASSEMBLY (SUCTION CONTROL VALVE)
Inspect the suction control valve (supply pump assembly) Click here.
NG |
REPLACE SUPPLY PUMP ASSEMBLY (SUCTION CONTROL VALVE) Click here |
OK |
CHECK HARNESS AND CONNECTOR (SUCTION CONTROL VALVE - ECM)
Disconnect the suction control valve connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | |||||||||
---|---|---|---|---|---|---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR Click here |
OK |
CHECK HARNESS AND CONNECTOR (SUCTION CONTROL VALVE - NO. 1 INTEGRATION RELAY)
Disconnect the suction control valve connector.
Remove the No. 1 integration relay from the engine room relay block.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | |||||||||
---|---|---|---|---|---|---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR Click here |
OK |
CHECK ECM POWER SOURCE CIRCUIT
Check the ECM power source circuit Click here.
NEXT |
CHECK WHETHER DTC OUTPUT RECURS
Connect the intelligent tester to the DLC3.
Turn the ignition switch to ON and turn the tester on.
Clear the DTCs Click here.
Turn the ignition switch off and wait for 30 seconds or more.
Turn the ignition switch to ON and wait for 1 second or more.
Enter the following menus: Powertrain / Engine and ECT / DTC.
Read the DTCs.
Result | Proceed to |
---|---|
DTC P1228 | A |
No DTC output | B |
B |
CHECK FOR INTERMITTENT PROBLEMS Click here |
A |
REPLACE ECM
Replace the ECM Click here.
NEXT |
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here |
REPAIR OR REPLACE HARNESS OR CONNECTOR
NEXT |
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here |
REPLACE SUPPLY PUMP ASSEMBLY (SUCTION CONTROL VALVE)
Replace the supply pump assembly Click here.
NEXT |
BLEED AIR FROM FUEL SYSTEM
Bleed air from fuel system Click here.
NEXT |
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
Connect the intelligent tester to the DLC3.
Turn the ignition switch to ON and turn the tester on.
Clear the DTCs Click here.
Turn the ignition switch off and wait for 30 seconds or more.
Turn the ignition switch to ON and wait for 1 second or more.
Enter the following menus: Powertrain / Engine and ECT / DTC.
Confirm that the DTC is not output again.
NEXT |
END |