Security Indicator Light Circuit

ENGINE IMMOBILISER: ENGINE IMMOBILISER SYSTEM: Security Indicator Light Circuit
- Security Indicator Light Circuit

DESCRIPTION

When a key is registered, the transponder key ECU outputs the key registration condition by lighting up, blinking or turning OFF the security indicator light.

WIRING DIAGRAM





INSPECTION PROCEDURE

HINT
When the transponder key ECU is replaced, reregister the ECU - ECM communication ID Engine Immobiliser System.

PROCEDURE

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

(a) Select the Active Test, use the Techstream to generate a command.

(b) Check that the security indicator light operation is normal.

Immobiliser





OK:

Security indicator light turns ON and OFF.

NG -- CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU - SECURITY INDICATOR LIGHT)
OK -- Continue to next step.

2. CHECK TRANSPONDER KEY ECU

(a) Remove the transponder key ECU with the connector still connected Removal.





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

Standard voltage:





NG -- REPLACE TRANSPONDER KEY ECU Removal

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Engine Immobiliser System

3. CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU - SECURITY INDICATOR LIGHT)

(a) Disconnect the J26 ECU connector.





(b) Disconnect the K20 meter connector.

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

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE ACCESSORY METER (SECURITY INDICATOR LIGHT) Removal