SFI SYSTEM, Diagnostic DTC:P1049

DTC Code DTC Name
P1049 VALVEMATIC Circuit B1

DESCRIPTION

The EDU in the continuously variable valve lift controller assembly monitors the driver circuit in the continuously variable valve lift controller assembly and detects malfunctions.

DTC No. DTC Detection Condition Trouble Area
P1049 EDU internal error (1 trip detection logic). Continuously variable valve lift controller assembly

CAUTION / NOTICE / HINT

Note

When the one of the following DTCs is stored and the MIL is illuminated, DTC P1047 is stored and actuator position learning is performed every time the engine is started. Also, after the system returns to normal, the following occurs during the first driving cycle: 1) DTC P1047 is stored, 2) actuator position learning is performed and 3) the MIL illuminates during actuator position learning.

Actuator position learning is performed when these DTCs are output.
P1046, P1049, P104A, P1055, P2646, P2647, P2648, P2649, P264A, U011B

Tech Tips


  • If DTC P1047 or P104A is output at the same time as DTC P1049, disregard DTCs P1047 and P104A and proceed with the inspection.

  • After performing repairs, perform the following procedures and check that DTCs are not output again.


  1. Connect the GTS to the DLC3.

  2. Start the engine and warm it up.

  3. Turn the GTS on.

  4. Clear the DTCs Click here.

  5. Turn the ignition switch off and wait 10 seconds.

  6. Start the engine and idle it for 20 seconds.

  7. Clear the DTCs Click here.

  8. Turn the ignition switch off and wait 10 seconds.

  9. Start the engine and idle it for 20 seconds.

  10. Turn the ignition switch off and wait 10 seconds.

  11. Turn the ignition switch to ON.

  12. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

  13. 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


  1. 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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