Lexus NX: Power Switch Illumination Circuit
DESCRIPTION
The illuminated entry system controls the power switch illumination.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- Recognition code registration is necessary when replacing the main body ECU (multiplex network body ECU).
- If the main body ECU (multiplex network body ECU) is replaced, refer to Registration.
PROCEDURE
| 1. | PERFORM ACTIVE TEST USING TECHSTREAM (POWER/ENGINE SW LIGHT) |
(a) Using the GTS, perform the Active Test.
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| Tester Display | Measurement Item | Control Range | Diagnostic Note |
|---|---|---|---|
| Power/Engine SW Light | Power switch illumination | ON or OFF | - |
| Tester Display |
|---|
| Power/Engine SW Light |
OK:
Power switch illumination illuminates.
| Power switch illumination illuminates | .gif) | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
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| 2. | INSPECT POWER SWITCH |
(a) Remove the power switch.
Click here
(b) Inspect the power switch.
Click here
| NG | | REPLACE POWER SWITCH |
|
| 3. | CHECK HARNESS AND CONNECTOR (POWER SWITCH - CERTIFICATION ECU [SMART KEY ECU ASSEMBLY]) |
(a) Disconnect the I16 power switch connector.
(b) Disconnect the I53 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 |
|---|---|---|
| I16-9 (SWIL) - I53-17 (SWIL) | Always | Below 1 Ω |
| I16-6 (AGND) - I53-12 (AGND) | Always | Below 1 Ω |
| I16-9 (SWIL) or I53-17 (SWIL) - Body ground | Always | 10 kΩ or higher |
| I16-6 (AGND) or I53-12 (AGND) - 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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LTA (Lane Tracing Assist)
When driving on highways and
freeways with white (yellow) lane
lines, this function alerts the driver
when the vehicle might depart
from its lane or course* and provides
assistance by operating the
steering wheel to keep the vehicle
in its lane or course*. Furthermore,
the system provides st
LDA (Lane Departure Alert with
steering control)
When driving on highways and
freeways with white (yellow) lane
lines, this function alerts the driver
when the vehicle might depart from
its lane or course* and provides
assistance by operating the steering
wheel to keep the vehicle in its
lane or course*.
The LDA system recognizes white
