Lexus NX: AUTO Power Retract Mirrors do not operate
DESCRIPTION
The outer mirror switch assembly (mirror retract switch) sends the auto retractable outer mirror switch signal to the main body ECU (multiplex network body ECU). The main body ECU (multiplex network body ECU) sends the auto retract/return signal to the outer rear view mirror assemblies, which then control the mirrors.
When the main body ECU (multiplex network body ECU) receives a door lock output signal while the outer mirror switch assembly (mirror retract switch) is in the auto retract position, the main body ECU (multiplex network body ECU) operates the retract motors built into the outer rear view mirror assemblies to retract or return the outer rear view mirror assemblies.
WIRING DIAGRAM
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CAUTION / NOTICE / HINT
NOTICE:
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If necessary, the function can be set to the default setting through the customize function.
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If the main body ECU (multiplex network body ECU) is replaced, refer to Registration.
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PROCEDURE
| 1. | CHECK WIRELESS DOOR LOCK CONTROL SYSTEM |
(a) Check the wireless door lock control system.
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OK:
Wireless door lock control system is normal.
| NG | .gif) | GO TO WIRELESS DOOR LOCK CONTROL SYSTEM |
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| 2. | CHECK SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function) |
(a) Check the smart access system with push-button start (for Entry Function).
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OK:
Smart access system with push-button start (for Entry Function) is normal.
| NG | | GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function) |
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| 3. | INSPECT OUTER MIRROR SWITCH ASSEMBLY (MIRROR RETRACT SWITCH) |
(a) Remove the outer mirror switch assembly.
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(b) Inspect the outer mirror switch assembly.
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| NG | | REPLACE OUTER MIRROR SWITCH ASSEMBLY |
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| 4. | CHECK HARNESS AND CONNECTOR (MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU] - OUTER MIRROR SWITCH ASSEMBLY [MIRROR RETRACT SWITCH]) |
(a) Disconnect the I47 main body ECU (multiplex network body ECU) connector.
(b) Disconnect the M14 outer mirror switch assembly (mirror retract switch) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I47-15 (RTR) - M14-12 (MR) | Always | Below 1 Ω |
| I47-15 (RTR) or M14-12 (MR) - Body ground | Always | 10 kΩ or higher |
| OK | | REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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