Engine Switch Illumination Circuit
The illuminated entry system controls the engine switch illumination.
WIRING DIAGRAM
PROCEDURE
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) Enter the following menus: Body Electrical / Smart Key / Active Test.
(e) Check that the illumination operates.
Smart KeyTester Display | Test Part | Control Range | Diagnostic Note |
|---|---|---|---|
Power/Engine SW Light |
Engine switch illumination |
ON/OFF |
- |
OK:
Engine switch illumination comes on.
| OK | .gif) | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
.gif)
INSPECT ENGINE SWITCH
(a) Remove the engine switch (See page .gif)
).
(b) Apply battery voltage to the engine switch.
(c) Check that the illumination comes on.
OK:
Measurement Condition | Specified Condition |
|---|---|
Battery positive (+) → Terminal 11 (SWIL) Battery negative (-) → Terminal 5 (GND) |
Engine switch illumination comes on |
*1 |
Illumination |
*2 |
Component without harness connected (Engine Switch) |
| NG | | REPLACE ENGINE SWITCH |
|
CHECK HARNESS AND CONNECTOR (ENGINE SWITCH - CERTIFICATION ECU AND BODY GROUND)
(a) Disconnect the D25 certification ECU (smart Key ECU Assembly) connector. |
 |
(b) Disconnect the D13 engine switch connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
|---|---|---|
D13-11 (SWIL) - D25-11 (SWIL) |
Always |
Below 1 Ω |
D13-5 (GND) - Body ground |
Always |
Below 1 Ω |
D13-11 (SWIL) - Body ground |
Always |
10 kΩ or higher |
*1 |
Front view of wire harness connector (to Engine Switch) |
*2 |
Front view of wire harness connector (to Certification ECU (Smart Key ECU Assembly)) |
| OK | | REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
Test yourself
A quick Toyota Venza quiz: every answer comes with an explanation and a link to the manual page.