Toyota 4Runner manuals

Toyota 4Runner: Security Indicator Light Circuit

DESCRIPTION

  • When the engine immobiliser system is set, the security indicator flashes continuously, but does not illuminate if the engine immobiliser system is not set.

WIRING DIAGRAM


CAUTION / NOTICE / HINT

NOTICE:

Before replacing the certification ECU (smart key ECU assembly), refer to Registration (See page ).


PROCEDURE

1.

PERFORM ACTIVE TEST USING TECHSTREAM (IMMOBILISER INDICATOR)

(a) Check that the security indicator light illuminates when operating it with the Active Test (See page ).


Smart Key

Tester Display

Test Part

Control Range

Diagnostic Note

Immobiliser Indicator

Security indicator light

ON/OFF

The test is possible when the following conditions are met:

  • The key is in the cabin.
  • The engine switch is on (IG).

OK:

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


OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE


NG

2.

INSPECT SECURITY INDICATOR LIGHT (TELLTALE LIGHT ASSEMBLY)

(a) Remove the security indicator light (telltale light assembly) (See page ).


(b) Inspect the security indicator light (telltale light assembly) (See page ).



NG

REPLACE SECURITY INDICATOR LIGHT (TELLTALE LIGHT ASSEMBLY)


OK

3.

CHECK HARNESS AND CONNECTOR (TELLTALE LIGHT ASSEMBLY - CERTIFICATION ECU AND BODY GROUND)

(a) Disconnect the F32 security indicator light (telltale light assembly) connector.

(b) Disconnect the F79 certification ECU (smart key ECU assembly) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

F32-6 (LP) - F79-2 (IND)

Always

Below 1 Ω

F32-1 (GND) - Body ground

Always

Below 1 Ω

F32-6 (LP) or F79-2 (IND) - Body ground

Always

10 kΩ or higher


OK

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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...

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