ECD SYSTEM(w/ DPF), Diagnostic DTC:P06DA, P06DB, P06DC

DTC Code DTC Name
P06DA Engine Oil Pressure Control Circuit Open
P06DB Engine Oil Pressure Control Circuit Low
P06DC Engine Oil Pressure Control Circuit High

DESCRIPTION

Refer to DTC P0522 Click here

P06DA
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Ignition switch ON for 2 seconds or more

Open or short in oil pressure switching valve assembly control circuit for 2 seconds or more.

(1 trip detection logic)

  • Open or short in oil pressure switching valve assembly control circuit

  • Oil pressure switching valve assembly

  • ECM
P06DB
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Ignition switch ON

Short to ground or open in oil pressure switching valve assembly control circuit for 2 seconds or more.

(1 trip detection trip)

  • Open or short in oil pressure switching valve assembly control circuit

  • Oil pressure switching valve assembly

  • ECM
P06DC
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Ignition switch ON

Short to +B in oil pressure switching valve assembly control circuit for 2 seconds or more.

(1 trip detection trip)

  • Short in oil pressure switching valve assembly control circuit

  • Oil pressure switching valve assembly

  • ECM

WIRING DIAGRAM

Refer to DTC P0522 Click here.

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 GTS. 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 GTS display.

  • Read freeze frame data using the GTS. 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.

  • An output DTC does not necessarily indicate that there is a malfunction. DTCs may have been stored due to an insufficient engine oil amount even though the oil level warning light is currently not illuminated, such as when engine oil is added by the customer.

PROCEDURE


  1. INSPECT OIL PRESSURE SWITCHING VALVE ASSEMBLY


    1. Inspect the oil pressure switching valve assembly Click here.


    NG

    REPLACE OIL PRESSURE SWITCHING VALVE ASSEMBLY Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (OIL PRESSURE SWITCHING VALVE ASSEMBLY - ECM)


    1. Disconnect the B65 oil pressure switching valve assembly connector.

    2. Disconnect the B104 ECM connector (for LHD).

    3. Disconnect the B103 ECM connector (for RHD).

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      B65-2 - B104-28 (V20) Always Below 1 Ω
      B65-2 or B104-28 (V20) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      B65-2 - B103-28 (V20) Always Below 1 Ω
      B65-2 or B103-28 (V20) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  3. CHECK TERMINAL VOLTAGE (POWER SOURCE OF OIL PRESSURE SWITCHING VALVE ASSEMBLY)


    1. A01VF22E02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Oil Pressure Switching Valve Assembly)

      Disconnect the oil pressure switching valve assembly connector.

    2. Turn the ignition switch to ON.

    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      B65-1 - Body ground Ignition switch ON 11 to 14 V

    NG

    CHECK HARNESS AND CONNECTOR (OIL PRESSURE SWITCHING VALVE ASSEMBLY - NO. 1 INTEGRATION RELAY) Click here

    OK

  4. CHECK WHETHER DTC OUTPUT RECURS


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs Click here.

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

    6. Turn the ignition switch to ON and wait for 2 seconds or more.

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

    8. Read the DTCs.

      Result
      Result Proceed to
      DTC P06DA, P06DB or P06DC is output A
      DTC is not output B

    B

    CHECK FOR INTERMITTENT PROBLEMS Click here

    A

  5. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  6. CHECK HARNESS AND CONNECTOR (OIL PRESSURE SWITCHING VALVE ASSEMBLY - NO. 1 INTEGRATION RELAY)


    1. Disconnect the B65 oil pressure switching valve assembly connector.

    2. Remove the No. 1 integration relay from engine room relay block.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      B65-1 - 1E-3 Always Below 1 Ω
      B65-1 or 1E-3 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  7. CHECK ECM POWER SOURCE CIRCUIT


    1. Check the ECM power source circuit Click here.


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  8. REPAIR OR REPLACE HARNESS OR CONNECTOR


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  9. REPLACE OIL PRESSURE SWITCHING VALVE ASSEMBLY


    1. Replace the oil pressure switching valve assembly Click here.


    NEXT

  10. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs Click here.

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

    6. Turn the ignition switch to ON and wait for 2 seconds or more.

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

    8. Confirm that the DTC is not output again.


    NEXT

    END