Security Indicator Light Circuit

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

DESCRIPTION

The certification ECU indicates the key registration condition by lighting up, blinking or turning off the security indicator.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

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

(a) Operate the Techstream according to the steps on the display and select "Active Test" Engine Immobiliser System (w/ Smart Key System).

Smart Key





OK:

Security indicator light ON / OFF using the Techstream.

NG -- INSPECT HEATER CONTROL PANEL (SECURITY INDICATOR LIGHT)

OK -- REPLACE ECU AGGREGATION BOX (CERTIFICATION ECU) Removal

2. INSPECT HEATER CONTROL PANEL (SECURITY INDICATOR LIGHT)





(a) Remove the heater control panel Removal.

(b) Apply battery voltage between the terminals of the heater control panel, and check that the security indicator light illuminates.

OK:

for TMMC Made





for TMC Made





NG -- REPLACE HEATER CONTROL PANEL (SECURITY INDICATOR LIGHT) Removal
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (HEATER CONTROL PANEL - CERTIFICATION ECU AND BODY GROUND)





(a) Disconnect the E23*1 or E91*2 panel connector.

*1: for TMMC Made

*2: for TMC Made

(b) Disconnect the E84 ECU connector.

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

Standard Resistance:

for TMMC Made





for TMC Made





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE ECU AGGREGATION BOX (CERTIFICATION ECU) Removal