Lexus ES: AUTO Power Retract Mirrors do not operate
DESCRIPTION
The outer mirror switch assembly sends the 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 mirror control ECU assemblies via CAN communication, which then controls the mirrors.
When the outer mirror control ECU assemblies receive a door lock output signal from the main body ECU (multiplex network body ECU) while the retractable outer mirror switch is in auto position, the outer mirror control ECU assemblies operate the retract motors built into the outer rear view mirror assemblies to retract or return the outer rear view mirror assemblies.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
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The power mirror control system (w/ Memory) uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the power mirror control system (w/ Memory) after confirming that the communication systems are functioning properly.
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Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
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PROCEDURE
| 1. | CHECK POWER RETRACT MIRROR FUNCTION |
(a) Check the power retract mirror function.
Click here
OK:
Power retract mirror function operates normally.
| NG |  | GO TO OTHER DIAGNOSIS PROCEDURE (Power Retractable Mirrors do not Operate with Power Retract Mirror Switch) |
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| 2. | CHECK POWER DOOR LOCK CONTROL SYSTEM |
(a) Check the power door lock control system.
Click here
OK:
Power door lock control system is normal.
| NG | | GO TO POWER DOOR LOCK CONTROL SYSTEM |
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| 3. | CHECK WIRELESS DOOR LOCK CONTROL SYSTEM |
(a) Check the wireless door lock control system.
Click here
OK:
Wireless door lock control system is normal.
| NG | | GO TO WIRELESS DOOR LOCK CONTROL SYSTEM |
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| 4. | CHECK SMART ACCESS SYSTEM (for Entry Function) |
(a) Check the smart access system (for Entry Function).
Click here
OK:
Smart access system (for Entry Function) is normal.
| NG | | GO TO SMART ACCESS SYSTEM (for Entry Function) |
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| 5. | READ VALUE USING TECHSTREAM |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > Main Body > Data List| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Auto Mirror SW | Retractable outer mirror switch signal | OFF or ON | OFF: Retractable outer mirror switch not in auto position ON: Retractable outer mirror switch in auto position | - |
| Tester Display |
|---|
| Auto Mirror SW |
OK:
On the Techstream screen, ON or OFF is displayed accordingly.
| OK | | REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
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| 6. | INSPECT OUTER MIRROR SWITCH ASSEMBLY |
(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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| 7. | CHECK HARNESS AND CONNECTOR (OUTER MIRROR SWITCH ASSEMBLY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) |
(a) Disconnect the G38 main body ECU (multiplex network body ECU).
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| J16-11 (MF) - G38-16 (RET) | Always | Below 1 Ω |
| J16-8 (MR) - G38-6 (AMR) | Always | Below 1 Ω |
| J16-12 (E) - G38-9 (MIRE) | Always | Below 1 Ω |
| J16-11 (MF) or G38-16 (RET) - Body ground | Always | 10 kΩ or higher |
| J16-8 (MR) or G38-6 (AMR) - Body ground | Always | 10 kΩ or higher |
| J16-12 (E) or G38-9 (MIRE) - 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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Freeze Frame Data
FREEZE FRAME DATA FREEZE FRAME DATA NOTICE:
It is difficult to show the specified values (judgment values) clearly because freeze frame data values change significantly due to differences in measurement conditions, surroundings, or vehicle conditions. For this reason, there may be a problem even
