Code No. P0513: Immobilizer System <Vehicles with KOS>

FUNCTION

The engine-ECU transmits to and receives from KOS&OSS-ECU a control signal to authenticate the KOS key.

note

This code may be displayed due to radio interference if there are multiple registered ignition keys nearby during engine start.
This code may be displayed when the transponder ID code is registered.
This code is also displayed when the ignition key code is not recognised.
When this code is displayed, it is also sent to KOS&OSS-ECU

TROUBLE JUDGEMENT

Check Conditions

Ignition switch is "ON" position.
Communication with KOS&OSS-ECU is normal.

Judgement Criterion

When it was different in the encrypted code sent from KOS&OSS-ECU and operation result by engine-ECU.

FAIL-SAFE AND BACKUP FUNCTION

Engine start is prohibited.

PROBABLE CAUSES

Failed KOS&OSS-ECU
Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III diagnosis code

Reconfirmation whether diagnosis code is set in KOS&OSS-ECU.

Q. Is the diagnosis code set?

	Perform the troubleshooting of KOS-system (Refer to GROUP 42B - Troubleshooting - Diagnosis Code Chart ).

	Go to Step 2.

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

Reconfirmation of diagnosis code.

Q. Is the diagnosis code set?

	Replace the KOS&OSS-ECU. After the replacement, put the each identification code into KOS&OSS-ECU [Refer to GROUP 42B - On-vehicle Service - ID Codes Registration Procedures ]. Then go to Step 3.

	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

Reconfirmation of diagnosis code.

Q. Is the diagnosis code set?

	Replace the engine-ECU.

	Check end.