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DTC P0513: Immobilizer Malfunction <Vehicles without KOS>
 
 
 
 
TECHNICAL DESCRIPTION
  • ECM monitors the communication condition with the ETACS-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 ETACS-ECU (immobilizer system) 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 Tools:
  • MB992744: Vehicle communication interface-Lite (V.C.I.-Lite)
  • MB992745: V.C.I.-Lite main harness A
  • MB992747: V.C.I.-Lite USB cable short
  • MB992748: V.C.I.-Lite USB cable long
  • MB991958: Scan Tool (M.U.T.-III Sub Assembly)
    • MB991824: Vehicles Communication Interface (V.C.I.)
    • MB991827: M.U.T.-III USB Cable
    • MB991910: M.U.T.-III Main Harness A (Vehicles with CAN communication system)
STEP 1. Using scan tool (M.U.T.-III), check VIN Information.
cautionTo prevent damage to scan tool (M.U.T.-III), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-III).
(1) Connect scan tool (M.U.T.-III). Refer to HOW TO CONNECT THE SCAN TOOL (M.U.T.-III) .
(2) Turn the ignition switch to the "ON" position.
(3) Set scan tool (M.U.T.-III) 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 (M.U.T.-III), 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 54A, Immobilizer System <Vehicles without KOS> - Diagnostic Trouble Code Chart .
Go to Step 3.
 
STEP 3. Using scan tool (M.U.T.-III), 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 .