ECD SYSTEM, Diagnostic DTC:P06B9,P06BA,P06BB and P06BC

DTC Code DTC Name
P06B9 Cylinder 1 Glow Plug Circuit Range / Performance
P06BA Cylinder 2 Glow Plug Circuit Range / Performance
P06BB Cylinder 3 Glow Plug Circuit Range / Performance
P06BC Cylinder 4 Glow Plug Circuit Range / Performance

DESCRIPTION

Refer to DTC P052F.

Click here

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P06B9

Cylinder 1 Glow Plug Circuit Range / Performance

Either condition is met (3 trip detection logic):

  • Malfunction in part of glow plug controller assembly which outputs to No. 1 glow plug for 1.2 seconds or more

  • Glow plug controller assembly detects resistance malfunction in No. 1 glow plug for 1.2 seconds or more

  • Glow plug controller assembly

  • No. 1 glow plug

  • Open or short in No. 1 glow plug circuit

Does not come on

DTC stored

P06BA

Cylinder 2 Glow Plug Circuit Range / Performance

Either condition is met (3 trip detection logic):

  • Malfunction in part of glow plug controller assembly which outputs to No. 2 glow plug for 1.2 seconds or more

  • Glow plug controller assembly detects resistance malfunction in No. 2 glow plug for 1.2 seconds or more

  • Glow plug controller assembly

  • No. 2 glow plug

  • Open or short in No. 2 glow plug circuit

Does not come on

DTC stored

P06BB

Cylinder 3 Glow Plug Circuit Range / Performance

Either condition is met (3 trip detection logic):

  • Malfunction in part of glow plug controller assembly which outputs to No. 3 glow plug for 1.2 seconds or more

  • Glow plug controller assembly detects resistance malfunction in No. 3 glow plug for 1.2 seconds or more

  • Glow plug controller assembly

  • No. 3 glow plug

  • Open or short in No. 3 glow plug circuit

Does not come on

DTC stored

P06BC

Cylinder 4 Glow Plug Circuit Range / Performance

Either condition is met (3 trip detection logic):

  • Malfunction in part of glow plug controller assembly which outputs to No. 4 glow plug for 1.2 seconds or more

  • Glow plug controller assembly detects resistance malfunction in No. 4 glow plug for 1.2 seconds or more

  • Glow plug controller assembly

  • No. 4 glow plug

  • Open or short in No. 4 glow plug circuit

Does not come on

DTC stored

WIRING DIAGRAM

Refer to DTC P052F.

Click here

CAUTION / NOTICE / HINT

Note:

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

Tip:

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.

PROCEDURE

  1. CHECK HARNESS AND CONNECTOR (GLOW PLUG CONTROLLER ASSEMBLY - GLOW PLUG)

    1. Disconnect connectors of the glow plug controller assembly.

    2. Remove the glow plug connector from the glow plug.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      B121-4 (GL1) - k2-1 (GLW1)

      Always

      Below 1 Ω

      B121-1 (GL2) - k3-1 (GLW2)

      Always

      Below 1 Ω

      B121-6 (GL3) - k4-1 (GLW3)

      Always

      Below 1 Ω

      B121-5 (GL4) - k5-1 (GLW4)

      Always

      Below 1 Ω

      B121-4 (GL1) or k2-1 (GLW1) - Body ground

      Always

      10 kΩ or higher

      B121-1 (GL2) or k3-1 (GLW2) - Body ground

      Always

      10 kΩ or higher

      B121-6 (GL3) or k4-1 (GLW3) - Body ground

      Always

      10 kΩ or higher

      B121-5 (GL4) or k5-1 (GLW4) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTORClick here

    OK

  2. REPLACE GLOW PLUG

    1. Replace the glow plug.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

  3. 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 60 seconds or more [A].

    5. Perform road test [B].

    6. Repeat [A] and [B] for the number of trips detected.

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

      Powertrain > Engine and ECT > Trouble Codes

    8. Confirm that the DTC is not output again.

    Result

    Proceed to

    OK

    NG
    OK

    END

    NG

  4. REPLACE GLOW PLUG CONTROLLER ASSEMBLY

    1. Replace the glow plug controller assembly.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  5. REPAIR OR REPLACE HARNESS OR CONNECTOR

    1. Repair or replace the harness or connector.

    Result

    Proceed to

    NEXT
    NEXT

  6. 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 60 seconds or more [A].

    5. Perform road test [B].

    6. Repeat [A] and [B] for the number of trips detected.

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

      Powertrain > Engine and ECT > Trouble Codes

    8. Confirm that the DTC is not output again.

    Result

    Proceed to

    NEXT
    NEXT

    END