ENGINE IMMOBILISER SYSTEM DIAGNOSIS SYSTEM


  1. DESCRIPTION


    1. The ID code box (immobiliser code ECU) and power management control ECU (HV CPU) control the vehicle engine immobiliser system functions. Engine immobiliser system data and Diagnostic Trouble Codes (DTCs) can be read through the vehicle Data Link Connector 3 (DLC3).

      In some cases, a malfunction may be occurring in the engine immobiliser system even though the security indicator light is not illuminated.

      When the system seems to be malfunctioning, use the intelligent tester to check for malfunctions and perform repairs.

  2. CHECK DLC3


    1. Check the DLC3 Click here.

  3. INSPECT BATTERY VOLTAGE


    1. Measure the battery voltage with the power switch off.

      If the voltage is below 11 V, recharge or replace the battery.