Code No. P0630: Chassis Number not Programmed

FUNCTION

The chassis number is stored in the engine-ECU by the vehicle manufacturer.

TROUBLE JUDGMENT

Check Condition

Ignition switch is "ON" position.

Judgment Criterion

The entered chassis number data history is not found.

PROBABLE CAUSES

The chassis number is not entered.
Failed engine-ECU.

DIAGNOSIS PROCEDURE

STEP 1. Check chassis number information.

Set M.U.T.-III to the coding mode for chassis number information.

Q. Has chassis number been written?

	Go to Step 2.

	Write chassis number. Go to Step 3.

STEP 2. M.U.T.-III diagnosis code.

Reconfirm whether the diagnosis code is set.

Erase the diagnosis codes being output.
Ignition switch: "LOOK" (OFF) to ON.
Confirm whether the diagnosis code is set.

Q. Is the diagnosis code output?

	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 ).

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

Reconfirm whether the diagnosis code is set.

Erase the diagnosis codes being output.
Ignition switch: "LOOK" (OFF) to ON.
Confirm whether the diagnosis code is set.

Q. Is the diagnosis code output?

	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 ).

	The check is end.