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DTC P0513: Immobilizer Malfunction
 
 
 
 
TECHNICAL DESCRIPTION
  • ECM monitors the communication condition with the immobilizer-ECU. When an abnormality in communication is found, ECM prevents engine start.
 
 
DTC SET CONDITIONS
Check Condition
  • Ignition switch is "ON" position.
Judgment Criterion
  • When it was different in the encrypted code sent from immobilizer-ECU and operation result by ECM.
 
 
FAIL-SAFE AND BACKUP FUNCTION
  • Engine start is prohibited.
 
 
TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
  • CAN system failed.
  • Immobilizer system failed.
  • ECM failed.

 
 
DIAGNOSIS
Required Special Tool:
  • MB991958: Scan Tool (M.U.T.-III Sub Assembly)
    • MB991824: V.C.I.
    • MB991827: USB Cable
    • MB991910: Main Harness A
STEP 1. Using scan tool MB991958, check VIN Information.
cautionTo prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Set scan tool MB991958 to the coding mode for VIN Information.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Has VIN (current) been written?
Go to Step 2.
Write VIN. Then go to Step 2.
 
STEP 2. Using scan tool MB991958, read the immobilizer diagnostic trouble code (DTC).
(1) Turn the ignition switch to the "ON" position.
(2) Read the immobilizer-DTC.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Is the immobilizer-DTC set?
Refer to GROUP 42B, Diagnosis - Diagnostic Trouble Code Chart <Vehicles with KOS> or GROUP 42C, Diagnosis - Diagnostic Trouble Code Chart <Vehicles with WCM> .
Go to Step 3.
 
STEP 3. Using scan tool MB991958, read the diagnostic trouble code (DTC).
(1) Turn the ignition switch to the "ON" position.
(2) After the DTC has been deleted, read the DTC again.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Is DTC P0513 set?
Replace the ECM (Refer to, Removal and Installation ).
It can be assumed that this malfunction is intermittent. Refer to GROUP 00, How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions .