THEFT DETERRENT SYSTEM IG Power Source Circuit

DESCRIPTION

• When the engine switch is turned on (IG), positive (+) battery voltage is applied to the certification ECU (smart key ECU assembly).

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. CHECK BASIC FUNCTION (POWER SOURCE MODE FUNCTION)

   
   

   1. Check the basic function of the power source mode function.

      OK
      Basic function operates normally.

   
   

   NG

   GO TO ENTRY AND START SYSTEM (for Start Function) Click here

   OK

2. INSPECT FUSE (IGN)

   
   

   1. Remove the IGN 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 IGN fuse Always Below 1 Ω

   
   

   NG

   REPLACE FUSE

   OK

3. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU [SMART KEY ECU ASSEMBLY] - BATTERY AND BODY GROUND)

   

   
   

   1. Disconnect the E29 ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition E29-17 (E) - Body ground Always Below 1 Ω

   3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition E29-18 (IG) - Body ground Engine switch on (IG) 11 to 14 V

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

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