Code No. P0513: Immobilizer Malfunction

OPERATION

• The signals are sent and received between engine-A/T-ECU (terminal No. 65) and immobilizer-ECU (terminal No. 7).
  

FUNCTION

• Engine-A/T-ECU sends or receives the control signals to or from immobilizer-ECU to certify the ignition key.
  

  note	If the registered ignition keys are close each other when starting the engine, radio interference may cause this code to be displayed. This code may be displayed when registering the key encrypted code.

TROUBLE JUDGMENT

• Ignition switch is in ON position.
  

• Communication error between engine-A/T-ECU and the immobilizer-ECU.
  

PROBABLE CAUSE

• Open/short circuit in immobilizer system circuit or loose connector contact
  
• Failed immobilizer-ECU
  
• Failed engine-A/T-ECU
  

Q. Is the check result normal? Go to Step 2 . Repair or replace.

note Before checking harness, check intermediate connector C-17, and repair if necessary. Check output line for open/short circuit and damage. Q. Is the check result normal? Go to Step 3 . Repair.

	Replace immobilizer-ECU. Then go to Step 4 .

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

	Replace engine-A/T-ECU.

	Check end.