THEFT DETERRENT SYSTEM(w/o Entry and Start System) Security Indicator Light Circuit

DESCRIPTION

• When the theft deterrent system is in the disarmed state, the security indicator will flash continuously if the immobiliser system is set, or not illuminate if the immobiliser system is not set.

  When the theft deterrent system is in the armed state, the immobiliser system is automatically set and the security indicator will flash continuously.

  When the theft deterrent system is in the arming preparation state or alarm sounding state, the main body ECU (cowl side junction block assembly LH) causes the security indicator to be illuminated.

WIRING DIAGRAM

PROCEDURE

1. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (SECURITY INDICATOR)

   
   

   1. Connect the intelligent tester to the DLC3.

   2. Turn the ignition switch to ON.

   3. Turn the intelligent tester on.

   4. Enter the following menus: Body / Main Body / Active Test.

   5. According to the display on the intelligent tester, perform the Active Test.

      Main Body

      Tester Display	Test Part	Control Range	Diagnostic Note
      Security Indicator	Security indicator	ON / OFF	-

      OK
      Security indicator illuminates.

   
   

   OK

   REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK ASSEMBLY LH)

   NG

2. CHECK HARNESS AND CONNECTOR (CLOCK - MAIN BODY ECU AND BODY GROUND)

   
   

   1. Disconnect the g1 clock assembly connector.

   2. Disconnect the E4 main body ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition g1-9 (LP) - E4-4 (IND) Always Below 1 Ω g1-1 (E) - Body ground Always Below 1 Ω g1-9 (LP) - Body ground Always 10 kΩ or higher

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

3. REPLACE CLOCK ASSEMBLY (SECURITY INDICATOR LIGHT)

   
   

   1. Temporarily replace the clock assembly (security indicator light) with a new or normally functioning one Click here.

   2. When the theft deterrent system is in the arming preparation state, check that the security indicator light is illuminated.

      OK
      Security indicator light is illuminated.

   
   

   OK

   END (CLOCK ASSEMBLY WAS DEFECTIVE)

   NG

   REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK ASSEMBLY LH)