Engine Immobiliser System (W/O Smart Key System) Security Indicator Light Circuit

Vehicle Interior. Corolla. Zre142 Aze141

Theft Deterrent Keyless Entry. Corolla. Zre142 Aze141

INSPECTION PROCEDURE

PERFORM ACTIVE TEST USING TECHSTREAM

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

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

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

DESCRIPTION

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

WIRING DIAGRAM

Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function).Engine Immobiliser System (W/O Smart Key System) Security Indicator Light Circuit

INSPECTION PROCEDURE

NOTICE:

If the transponder key ECU assembly is replaced, register the key and ECU communication ID (COROLLA_ZRE142 RM00000120Y02CX.html).

1.PERFORM ACTIVE TEST USING TECHSTREAM

Connect the Techstream to the DLC3.

Turn the ignition switch to ON.

Turn the Techstream on.

Enter the following menus: Body Electrical / Immobiliser / Active Test.

Perform the Active Test according to the display on the Techstream.

Immobiliser (Transponder Key ECU Assembly)
Tester Display
Test Part
Control Range
Diagnostic Note
Security Indicator
Security indicator light
ON/OFF
-
OK:
The security indicator turns on and off according to the Techstream operation.

NG

OK

REPLACE TRANSPONDER KEY ECU ASSEMBLY (COROLLA_ZRE142 RM000003G05004X.html)

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

Disconnect the transponder key ECU assembly connector.

Disconnect the telltale light assembly connector.

Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function).Engine Immobiliser System (W/O Smart Key System) Security Indicator Light Circuit

for Telltale Light (w/o Clock):
1. Measure the resistance according to the value(s) in the table below.
  Standard Resistance:
  Tester Connection
  Condition
  Specified Condition
  E21-8 (IND) - E124-1 (LP)
  Always
  Below 1 Ω
  E21-8 (IND) - Body ground
  Always
  10 kΩ or higher

Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function).Engine Immobiliser System (W/O Smart Key System) Security Indicator Light Circuit

for Telltale Light (w/ Clock):
1. Measure the resistance according to the value(s) in the table below.
  Standard Resistance:
  Tester Connection
  Condition
  Specified Condition
  E21-8 (IND) - E48-5 (LP)
  Always
  Below 1 Ω
  E21-8 (IND) - Body ground
  Always
  10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

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

for Telltale Light (w/o Clock):
1. Measure the resistance according to the value(s) in the table below.
  Standard Resistance:
  Tester Connection
  Condition
  Specified Condition
  E124-2 (E) - Body ground
  Always
  Below 1 Ω

for Telltale Light (w/ Clock):
1. Measure the resistance according to the value(s) in the table below.
  Standard Resistance:
  Tester Connection
  Condition
  Specified Condition
  E48-12 (E) - Body ground
  Always
  Below 1 Ω

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

REPLACE TELLTALE LIGHT ASSEMBLY (COROLLA_ZRE142 RM000003FX7004X.html)