Security Indicator Light Circuit

ENGINE IMMOBILISER: ENGINE IMMOBILISER SYSTEM (w/ Smart Key System): Security Indicator Light Circuit
- Security Indicator Light Circuit

DESCRIPTION

The security indicator light blinks continuously due to a continuous signal received from the certification ECU (smart key ECU assembly) while in the armed state.

WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
If the certification ECU (smart key ECU assembly) is replaced, register the key and ECU communication ID Engine Immobilizer System (w/ Smart Key System).

PROCEDURE

1. PERFORM ACTIVE TEST USING TECHSTREAM (SECURITY INDICATOR LIGHT)

(a) Connect Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the tester on.

(d) Select the following menu items: Body Electrical / Smart Key / Active Test.

(e) Perform the Active Test according to the display on the tester.

Smart Key (Certification ECU (Smart Key ECU Assembly)):





OK:

The security indicator light turns on and off according to the tester operation.

NG -- CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - SECURITY INDICATOR LIGHT)

OK -- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Removal

2. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - SECURITY INDICATOR LIGHT)

(a) Disconnect the certification ECU (smart key ECU assembly) and security indicator light connectors.





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

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (SECURITY INDICATOR LIGHT - BODY GROUND)

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





Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE SECURITY INDICATOR LIGHT Removal