ENGINE IMMOBILISER SYSTEM ID Code Box Power Source Circuit

DESCRIPTION

This circuit provides power to operate the ID code box (immobiliser code ECU).

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. INSPECT FUSE (IMB)

   
   

   1. Remove the IMB fuse from the engine room relay block.

   2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition IMB fuse Always Below 1 Ω

   
   

   NG

   REPLACE FUSE

   OK

2. CHECK HARNESS AND CONNECTOR (ID CODE BOX - BATTERY AND BODY GROUND)

   

   
   

   1. Disconnect the E28 box connector.

   2. Measure the resistance and voltage according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition E28-8 (GND) - Body ground Always Below 1 Ω

      Standard Voltage
      Tester Connection Condition Specified Condition E28-1 (+B) - Body ground Always 11 to 14 V

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

   PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Click here