DTC P0028 Intake Valve Control Solenoid Circuit Range/Performance (Bank 2)

WARNING: This page is about a different variant/trim than selected.

DTC DETECTING CONDITION:

Immediately at fault recognition
GENERAL DESCRIPTION < Ref. to DTC P0028 INTAKE VALVE CONTROL SOLENOID CIRCUIT RANGE/PERFORMANCE (BANK 2) , Diagnostic Trouble Code (DTC) Detecting Criteria. >

TROUBLE SYMPTOM:

Erroneous idling

CAUTION: After repairing or replacing the defective part, perform the Clear Memory Mode < Ref. to OPERATION , Clear Memory Mode. > and Inspection Mode < Ref. to PROCEDURE , Inspection Mode. >.

WIRING DIAGRAM:

Fig 1: Intake Valve Control Solenoid Circuit Range/Performance (Bank 2) - Wiring Diagram

DIAGNOSIS PROCEDURE

Step	Check	Yes	No
1 CHECK ANY OTHER DTC ON DISPLAY.	Is any other DTC displayed?	Check DTC using "List of Diagnostic Trouble Code (DTC)". < Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . >	Go to step 2.
2 CHECK HARNESS BETWEEN ECM AND VARIABLE VALVE LIFT DIAGNOSIS OIL PRESSURE SWITCH CONNECTOR. Warm-up the engine. Turn the ignition switch to OFF. Disconnect the connectors from ECM and variable valve lift diagnosis oil pressure switch connector. Measure the resistance of harness between variable valve lift diagnosis oil pressure switch connector and engine ground. Connector & terminal (E72) No. 1 - Engine ground:	Is the resistance more than 1 MΩ?	Go to step 3.	Repair the ground short circuit of harness between ECM and variable valve lift diagnosis oil pressure switch connector.
3 CHECK HARNESS BETWEEN ECM AND VARIABLE VALVE LIFT DIAGNOSIS OIL PRESSURE SWITCH CONNECTOR. Measure the resistance of harness between ECM and variable valve lift diagnosis oil pressure switch connector. Connector & terminal (B134) No. 32 - (E72) No. 1:	Is the resistance less than 1 Ω?	Replace the variable valve lift diagnosis oil pressure switch. < Ref. to VARIABLE VALVE LIFT DIAGNOSIS OIL PRESSURE SWITCH . > Go to step 4.	Repair the open circuit of harness between ECM and variable valve lift diagnosis oil pressure switch connector.
4 CHECK DTC. Clear the memory. < Ref. to CLEAR MEMORY MODE . > Check the DTC after idling the engine.	Is DTC displayed?	Replace the oil switching solenoid valve. < Ref. to OIL SWITCHING SOLENOID VALVE . > Go to step 5.	END
5 CHECK DTC. Clear the memory. < Ref. to CLEAR MEMORY MODE . > Check the DTC after idling the engine.	Is DTC displayed?	Check for oil routing. Contact your SOA Service Center.	END