P0513

DTC P0513: Immobilizer Malfunction

TECHNICAL DESCRIPTION

- ECM[ M/T] or PCM[ A/T] monitors the communication condition with the immobilizer-ECU. When an abnormality in communication is found, ECM[ M/T] or PCM[ A/T] prevents engine start.

DTC SET CONDITIONS

Check Condition

- Ignition switch: ON
Judgement Criterion

- When the communication error between ECM[ M/T] or PCM[ A/T] and the immobilizer-ECU continues for 2 seconds or more.
or

- When it was different in the encrypted code sent from immobilizer-ECU and operation result by ECM[ M/T] or PCM[ A/T].

TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)

- Malfunction of harness or connector.
- Malfunction of immobilizer-ECU.
- Malfunction of ECM[ M/T] or PCM[ A/T].

DIAGNOSIS

Required Special Tools:

- MB991958: Scan tool (M.U.T.-III Sub Assembly)
- MB991824: V.C.I.
- MB991827: USB Cable
- MB991910: Main Harness A

NOTE:
The vehicle having the optional remote control engine starter can possibly store the diagnosis code when the remote control engine starter fails. In that case, make the vehicle condition to the one before installing the remote control engine starter. Check that the engine starts.
If the engine starts, carry out the troubleshooting of the installation instructions packaged together with the remote control engine starter. If the engine does not start, carry out the following troubleshooting.

STEP 1. Using scan tool MB991958, read the immobilizer diagnostic trouble code (DTC).





CAUTION:
To 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)Read the immobilizer-DTC.
(4)Turn the ignition switch to the "LOCK" (OFF) position.

Q. Is the immobilizer-DTC set?

YES Antitheft and Alarm Systems.

NO If DTC P0513 is output again after the MFI-DTC has been erased, replace the ECM [M/T] or the PCM [A/T]. When the ECM [M/T] or the PCM [A/T] is replaced, register the encrypted code. Encrypted Code Registration Criteria Table. Then check that the DTC P0513 does not reset.