Code No. P2149: Injector Common 2 (cylinder No. 2 and No. 3) Circuit Open

OPERATION

Driving power is supplied from the engine-ECU (terminal No. 2) to the No. 2 injector (terminal No. 1) and No. 3 injector (terminal No. 1).

FUNCTION

The engine-ECU monitors peak current from the No. 2 and No. 3 injector drive circuits.

TROUBLE JUDGMENT

Check Conditions

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

Judgment Criterion

When the peak current is not detected in injector circuits No. 2 and No. 3

PROBABLE CAUSES

Failed No. 2 injector
Failed No. 3 injector
Open/short circuit in No. 2 and No. 3 injector circuit or loose connector contact
Failed engine-ECU

DIAGNOSIS PROCEDURE

warning

A high-tension voltage is flowing between the engine-ECU and the injectors while the engine is running. Handle them carefully to avoid receiving electric shocks from the voltage.

STEP 1. Connector check: B-111 No. 2 injector connector and B-120 No. 3 injector connector

Q. Are the check results normal?

	Go to Step 2.

	Repair or replace the connector.

STEP 2. Check Injector itself.

Check No. 2 injector and No. 3 injector itself (Refer to ).

Q. Is the check result normal?

	Go to Step 3.

	Replace the injector. After replacing the Injector, register the injector identification code and learn fuel injection (Refer to GROUP 00 - Precautions Before Service - What The Common Rail Engine Learns ).

STEP 3. Connector check: D-213 engine-ECU connector

Q. Is the check result normal?

	Go to Step 4.

	Repair or replace the connector.

STEP 4. Check harness between D-213 (terminal No. 2) engine-ECU connector and B-111 (terminal No. 1) No. 2 injector connector.

note

Before checking harness, check intermediate connector D-111, and repair if necessary.

Check power supply line for open/short circuit.

Q. Is the check result normal?

	Go to Step 5.

	Repair the damaged harness wire.

STEP 5. Check harness between D-213 (terminal No. 5 and terminal No. 6) engine-ECU connector and B-111 (terminal No. 2) No. 2 injector connector.

note

Before checking harness, check intermediate connector D-111, and repair if necessary.

Check earthing line for open/short circuit.

Q. Is the check result normal?

	Go to Step 6.

	Repair the damaged harness wire.

STEP 6. Check harness between D-213 (terminal No. 2) engine-ECU connector and B-120 (terminal No. 1) No. 3 injector connector.

note

Before checking harness, check intermediate connector D-111, and repair if necessary.

Check power supply line for open circuit.

Q. Is the check result normal?

	Go to Step 7.

	Repair the damaged harness wire.

STEP 7. Check harness between D-213 (terminal No. 3 and terminal No. 4) engine-ECU connector and B-120 (terminal No. 2) No. 3 injector connector.

note

Before checking harness, check intermediate connector D-111, and repair if necessary.

Check earthing line for open circuit.

Q. Is the check result normal?

	Go to Step 8.

	Repair the damaged harness wire.

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

After erasing 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?

	Replace the engine-ECU. When the engine-ECU is replaced, write the chassis number (Refer to GROUP 00 - Precautions Before Service - How to Perform Chassis Number Writing ). After replacing the engine-ECU, register the injector identification code and learn fuel injection (Refer to GROUP 00 - Precautions Before Service - What The Common Rail Engine Learns ).

	Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).