P2150 – Injector Common 2 (Cylinder No. 2 and No. 3) Circuit Earth Short Euro5b MMC L200 IV

FUNCTION

  • The engine-ECU monitors voltage application to the injector during no injector energisation to detect errors in the No. 2 and No. 3 injector drive circuit.

  • TROUBLE JUDGEMENT

  • Ignition switch is in “ON” position.
  • Except during the engine cranking period
  • Battery positive voltage is 8 V or more.
  • When an engine-ECU internal capacitor is allowed to be charged
  • Short-circuit to the earth is detected in the injector drive circuit.

  • PROBABLE CAUSES

  • Short circuit in injector circuit or loose connector contact
  • Failed No. 2 injector
  • Failed No. 3 injector
  • Failed engine-ECU

  • DIAGNOSIS PROCEDURE

    STEP 1. Connector check: A-41 No. 2 injector connector and A-130 No. 3 injector connector.

    Q. Are the check results normal?

    STEP 2. Connector check: C-105 engine-ECU connector.

    Q. Is the check result normal?

    STEP 3. Check harness between C-105 (terminal No. 75) engine-ECU connector and A-41 (terminal No. 1) No. 2 injector connector.

  • Check earthing line for short circuit.
  • Q. Is the check result normal?

    STEP 4. Check harness between C-105 (terminal No. 50) engine-ECU connector and A-130 (terminal No. 1) No. 3 injector connector.

  • Check earthing line for short circuit.
  • Q. Is the check result normal?

    STEP 5. Check harness between C-105 (terminal No. 73) engine-ECU connector and A-41 (terminal No. 2) No. 2 injector connector

  • Check power supply line for short circuit.
  • Q. Is the check result normal?

    STEP 6. Check harness between C-105 (terminal No. 49) engine-ECU connector and A-130 (terminal No. 2) No. 3 injector connector.

  • Check power supply line for short circuit.
  • Q. Is the check result normal?

    STEP 7. Check Injector itself

    Q. Is the check result normal?

    STEP 8. M.U.T.-III diagnosis code.

  • After clearing the diagnosis code through M.U.T.-III, start the engine and confirm whether the diagnosis code is set.
  • Q. Is the diagnosis code set?

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