Security Indicator Light Does not Blink

THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM: Security Indicator Light Does not Blink
- Security Indicator Light Does not Blink

DESCRIPTION

* The certification ECU blinks the security indicator light when the immobiliser is set (the engine switch is off).

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:
* Inspect the fuses for circuits related to this system before performing the following inspection procedure.
* Before replacing the certification ECU, refer to Registration Engine Immobilizer System.

PROCEDURE

1. CHECK FOR DTC

(a) Check for DTCs Engine Immobilizer System.

OK:

DTC is not output.

NG -- GO TO DIAGNOSTIC TROUBLE CODE CHART Engine Immobilizer System
OK -- Continue to next step.

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

(a) Check that the security indicator light illuminates when operating it with the Active Test Engine Immobilizer System.

Smart Access

OK:

Security indicator light can be turned on and off using Techstream.

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

3. READ VALUE USING TECHSTREAM

(a) Turn the engine switch off.

HINT
When using the Techstream with the engine switch off to troubleshoot: Connect the Techstream to the DLC3 and turn a courtesy light switch on and off at 1.5-second intervals until communication between the Techstream and vehicle begins.

(b) Using the Techstream, read the Data List Engine Immobilizer System.

Smart Access

OK:

"Set" appears on screen.

NG -- CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - BATTERY AND BODY GROUND)

OK -- REPLACE CERTIFICATION ECU Removal

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

(a) w/ Navigation System:

(1) Disconnect the H4 and H8 display connectors.

(2) Disconnect the G26 ECU connector.

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

Standard Resistance:

(b) w/o Navigation System:

(1) Disconnect the H32 board connector.

(2) Disconnect the G26 ECU connector.

(3) 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.

5. REPLACE SECURITY INDICATOR LIGHT

(a) Temporarily replace the security indicator light with a new or normally functioning one.

* w/ Navigation System: Removal.

* w/o Navigation System: Disassembly.

(b) When the immobiliser is set (the engine switch is off), check that the security indicator light blinks.

OK:

Security indicator light blinks.

NG -- REPLACE CERTIFICATION ECU Removal

OK -- END

6. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - BATTERY AND BODY GROUND)

(a) Disconnect the G26 ECU connector.

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

Standard Voltage:

Text in Illustration

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE CERTIFICATION ECU Removal