Code No. P0302: No. 2 Cylinder Injector Malfunction (No Injection)

FUNCTION

The engine-ECU, by monitoring the variation in the engine revolution, detects the non-fuel injection state.

TROUBLE JUDGMENT

Check Conditions

During the normal engine operation
Engine coolant temperature is 80°C or higher.
Crank angle sensor is normal.

Judgment Criterion

The variation in the engine revolution is more than the specified value.

PROBABLE CAUSES

Failed No. 2 injector
No. 2 fuel injection pipe clogged
Failed engine-ECU

DIAGNOSIS PROCEDURE

caution

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. M.U.T.-III diagnosis code

After erasing the diagnosis code through M.U.T.-III, operate the engine in the warm-up state and confirm and confirm whether the diagnosis code is set.

Q. Is the diagnosis code set?

	Go to Step 2.

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

STEP 2. Check for No. 2 fuel injection pipe clogged

Remove the No. 2 fuel injection pipe.
Check whether No. 2 fuel injection pipe is clogged or not.

Q. Is it clogged?

	Clean or replace the No. 2 fuel injection pipe.

	Replace the No. 2 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 ). Then go to Step 3.

STEP 3. M.U.T.-III diagnosis code

After erasing the diagnosis code through M.U.T.-III, operate the engine in the warm-up state and confirm 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 - 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 ).

	The check is end.