Security Indicator Light Circuit
- When the engine immobiliser system is set, the security indicator flashes continuously, but does not illuminate if the engine immobiliser system is not set.
CAUTION / NOTICE / HINT
NOTICE:
Before replacing the certification ECU (smart key ECU assembly), refer to Registration (See page .gif)
).
PROCEDURE
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:
|
OK:
Security indicator light can be turned on and off using the Techstream.
| OK | .gif) | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
.gif)
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) |
|
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 |
Test yourself
A quick Toyota 4Runner quiz: every answer comes with an explanation and a link to the manual page.