SFI SYSTEM, Diagnostic DTC:P2648, P2649

DTC Code	DTC Name
P2648	"A" Rocker Arm Actuator Control Circuit Low Bank 1
P2649	"A" Rocker Arm Actuator Control Circuit High Bank 1

DESCRIPTION

The current flowing to the actuator in the continuously variable valve lift controller assembly is monitored by the current sensor in the continuously variable valve lift controller assembly. When the continuously variable valve lift controller assembly detects that no current is flowing to the actuator even though the actuator is commanded to operate or the current flowing to the actuator is more than the amount requested, a DTC is stored and the MIL illuminates.

DTC No.	DTC Detection Condition	Trouble Area
P2648	Current does not flow to the actuator while the actuator is commanded to operate (1 trip detection logic).	Continuously variable valve lift controller assembly
P2649	Actuator overcurrent (1 trip detection logic).	Continuously variable valve lift controller assembly

CAUTION / NOTICE / HINT

Note

When one of the following DTCs is output and the MIL is illuminated, actuator position learning is performed during the next trip. After the system returns to normal, actuator position learning is performed during the next trip and the MIL remains illuminated until learning is complete.

Actuator position learning is performed when these DTCs are output.
P1049, P104A, P1055, P2646, P2647, P2648, P2649, P264A, U011B

Tech Tips

If DTC P1055 is output at the same time as DTC P2648 or P2649, disregard DTC P1055 and proceed with the inspection.
After performing repairs, perform the following procedures and check that DTCs are not output again.

Connect the GTS to the DLC3.
Start the engine and warm it up.
Turn the GTS on.
Clear the DTCs Click here.
Turn the ignition switch off and wait 10 seconds.
Start the engine and idle it for 20 seconds.
Clear the DTCs Click here.
Turn the ignition switch off and wait 10 seconds.
Start the engine and idle it for 20 seconds.
Turn the ignition switch off and wait 10 seconds.
Turn the ignition switch to ON.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Read the DTCs.

After using the GTS to perform minimum valve lift learning, keep the engine idling for 30 seconds to complete learning. Otherwise, the VALVEMATIC system may not operate normally, causing poor acceleration, etc.

PROCEDURE

REPLACE CONTINUOUSLY VARIABLE VALVE LIFT CONTROLLER ASSEMBLY
1. Replace the continuously variable valve lift controller assembly Click here.
  
  Tech Tips
  
  Perform "Inspection After Repair" after replacing the continuously variable valve lift controller assembly Click here.
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