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
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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.
Click here
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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 | .gif) | 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 power 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.
Click here
| 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 |
READ NEXT:
Power Mirror Surface Position is not Memorized
DESCRIPTION If any of the M1, M2 or M3 seat memory switch is pressed, the outer mirror control ECU assembly (driver door) detects the switch operation and sends the seat memory switch signal to the ma
Power Mirrors do not Return to Memorized Position
DESCRIPTION If any of the M1, M2 or M3 seat memory switch is pressed, the outer mirror control ECU assembly (driver door) detects the switch operation and sends the seat memory switch signal to the ma
Reverse Shift-linked Function of Power Mirrors does not Operate
DESCRIPTION The ECM sends the reverse signal to the main body ECU (multiplex network body ECU) via CAN communication. When receiving the reverse signal, the main body ECU (multiplex network body ECU)
SEE MORE:
Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. HINT: Using the Techstream to read the Data List allows the values or states of
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspect
