Code No. P0513: Immobilizer Malfunction
FUNCTION
- The engine-ECU transmits to and receives from KOS-ECU a control signal to
authenticate the ignition 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 recognized.
- When this code is displayed, it is also sent to KOS-ECU.
- This code may be displayed due to radio interference if there are multiple registered ignition
keys nearby during engine start.
TROUBLE JUDGMENT
Check Condition
- Ignition switch is in "ON" position.
- The check result of the KOS-ECU is not suitable for that of the engine-ECU.
FAIL-SAFE AND BACKUP FUNCTION
- None
PROBABLE CAUSES
- Failed KOS-ECU
- Failed engine-ECU
DIAGNOSIS PROCEDURE |
STEP 1. M.U.T.-III other system diagnosis code. |
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Q.
Is the diagnosis code set?
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Perform the troubleshooting of KOS-system (Refer to GROUP 42B -
Troubleshooting <KOS-ECU>
-
Diagnosis
Code Chart <KOS-ECU> ). |
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Go to Step 2. |
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STEP 2. M.U.T.-III diagnosis code |
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Q.
Is the diagnosis code set?
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Replace the KOS-ECU. After the replacement, put the each identification code into
KOS-ECU (Refer to GROUP 42B -
On-vehicle Service <KOS-ECU>
-
ID Codes
Registration Procedures ). Then go to Step 3. |
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Intermittent malfunction (Refer to GROUP 00 -
How to Use Troubleshooting/Inspection
Service Points -
How to Cope with Intermittent Malfunctions ). |
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STEP 3. M.U.T.-III diagnosis code |
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Q.
Is the diagnosis code set?
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Replace the engine-ECU. |
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Check end. |
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