| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000VJI2 |
| Model Year Start: 2016 | Model: Sienna | Prod Date Range: [12/2015 - ] |
| Title: THEFT DETERRENT / KEYLESS ENTRY: THEFT DETERRENT SYSTEM: Security Indicator Light Circuit; 2016 - 2020 MY Sienna [12/2015 - ] | ||
|
Security Indicator Light Circuit |
DESCRIPTION
Even when the theft deterrent system is in the disarmed state, the security indicator blinks due to a signal output from the immobiliser system. The security indicator blinks continuously due to a continuous signal received from the immobiliser system while in the armed state.
The main body ECU causes the security indicator to come on only during the arming preparation and alarm sounding states.
WIRING DIAGRAM
PROCEDURE
|
1. |
PERFORM ACTIVE TEST USING TECHSTREAM |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Select the item below in the Active Test and then check that the indicator operates.
Main Body
|
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
|---|---|---|---|
|
Security Indicator |
Security indicator |
ON / OFF |
- |
OK:
The security indicator light flashes and goes off correctly when operated through the Techstream.
| OK |
|
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (See page
|
|
|
2. |
CHECK HARNESS AND CONNECTOR (COMBINATION METER - MAIN BODY ECU) |
(a) Remove the main body ECU from instrument panel junction block assembly (See page
![2016 - 2020 MY Sienna [12/2015 - ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL](/t3Portal/stylegraphics/info.gif)
).
(b) Disconnect the D146 combination meter assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D146-3 (LP) - 2I-23 (IND) |
Always |
Below 1 Ω |
|
D146-3 (LP) - Body ground |
Always |
10 kΩ or higher |
Text in Illustration
|
*1 |
Component without harness connected (Instrument Panel Junction Block Assembly) |
|
*2 |
Front view of wire harness connector (to Combination Meter Assembly) |
| NG |
|
|
|
3. |
CHECK HARNESS AND CONNECTOR (COMBINATION METER - BODY GROUND) |
|
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
Text in Illustration
|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
4. |
CHECK HARNESS AND CONNECTOR (COMBINATION METER - INSTRUMENT PANEL JUNCTION BLOCK) |
(a) Disconnect the 2D instrument panel junction block assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D146-3 (LP) - 2D-29 |
Always |
Below 1 Ω |
|
D146-3 (LP) - Body ground |
Always |
10 kΩ or higher |
| OK |
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
5. |
CHECK COMBINATION METER ASSEMBLY |
|
(a) Reinstall the main body ECU and the instrument panel junction block assembly. |
|
(b) Perform Active Test using the Techstream to turn the security indicator to the ON state (See page
).
(c) Measure the voltage according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D146-3 (LP) - Body ground |
Security indicator in ON state |
11 to 14 V |
Text in Illustration
|
*1 |
Front view of wire harness connector (to Combination Meter Assembly) |
| OK |
|
| NG |
|
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (See page
|
|
|