ECD SYSTEM(w/ Glow Plug Controller), Diagnostic DTC:P06DA,P06DB and 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

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P06DA

Engine Oil Pressure Control Circuit Open

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

-

DTC stored

P06DB

Engine Oil Pressure Control Circuit Low

Short to ground or open 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

-

DTC stored

P06DC

Engine Oil Pressure Control Circuit High

Short to +B in oil pressure switching valve assembly control circuit for 2 seconds or more. (1 trip detection logic)

  • Short in oil pressure switching valve assembly control circuit

  • Oil pressure switching valve assembly

  • ECM

-

DTC stored
Table 1. DTC Detection Drive Pattern

DTC No.

DTC Detection Drive Pattern

P06DA

Ignition switch ON for 2 seconds or more

P06DB

P06DC

Ignition switch ON

WIRING DIAGRAM

Refer to DTC P0522.

Click here

CAUTION / NOTICE / HINT

Note:

  • When replacing the ECM, perform ECM Initialization and Registration.

    Click here

  • Inspect the fuses for circuits related to this system before performing the following procedure.

Tip:

  • When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the GTS. Then after installing a new ECM, perform all of the initialization and registration procedures 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 insufficient engine oil even though the oil level warning light is currently not illuminated, such as when engine oil was added by the customer.

PROCEDURE

  1. INSPECT OIL PRESSURE SWITCHING VALVE ASSEMBLY

    1. Inspect the oil pressure switching valve assembly.

      Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE OIL PRESSURE SWITCHING VALVE ASSEMBLYClick here

    OK

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

    1. Disconnect the oil pressure switching valve assembly connector.

    2. Disconnect the ECM connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      B130-2 (OSVG) - B212-28 (V20)

      Always

      Below 1 Ω

      B130-2 (OSVG) or B212-28 (V20) - Body ground and other terminals

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTORClick here

    OK

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

    A247984C05

    *a

    Front view of wire harness connector

    (to Oil Pressure Switching Valve Assembly)

    1. 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

      Condition

      Specified Condition

      B130-1 (OSV+) - Body ground

      Ignition switch ON

      11 to 14 V

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI-MAIN RELAY - OIL PRESSURE SWITCHING VALVE ASSEMBLY)Click here

    OK

  4. CHECK WHETHER DTC OUTPUT RECURS

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Clear the DTCs.

      Powertrain > Engine and ECT > Clear DTCs

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

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

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

    7. Read the DTCs.

      Powertrain > Engine and ECT > Trouble Codes

      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

    Result

    Proceed to

    NEXT
    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  6. REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI-MAIN RELAY - OIL PRESSURE SWITCHING VALVE ASSEMBLY)

    Result

    Proceed to

    NEXT
    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  7. REPAIR OR REPLACE HARNESS OR CONNECTOR

    Result

    Proceed to

    NEXT
    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  8. REPLACE OIL PRESSURE SWITCHING VALVE ASSEMBLY

    1. Replace the oil pressure switching valve assembly.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

  9. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Clear the DTCs.

      Powertrain > Engine and ECT > Clear DTCs

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

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

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

    7. Confirm that the DTC is not output again.

      Powertrain > Engine and ECT > Trouble Codes

    Result

    Proceed to

    NEXT
    NEXT

    END