THEFT DETERRENT SYSTEM(w/ Entry and Start 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).

PROCEDURE

1. Click here

   CHECK BASIC FUNCTION (POWER SOURCE MODE FUNCTION)

   
   

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

      OK
      Basic function operates normally.

   
   
   • OKClick here
   • NG

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

2. Click here

   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

   
   
   • OKClick here
   • NG

     REPLACE FUSE

3. Table 2. *1 Front view of wire harness connector: (to Certification ECU [Smart Key ECU Assembly])
   Click here

   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

   
   
   • OK

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

   • NG

     REPAIR OR REPLACE HARNESS OR CONNECTOR