Lexus ES: Power Retractable Mirrors do not Operate with Power Retract Mirror Switch
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) then sends the mirror retract/return signal to each outer mirror control ECU assembly via CAN communication. Based on the signal, each outer mirror control ECU assembly retracts or returns its corresponding outer rear view mirror assembly.
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. | 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 |
|---|---|---|---|---|
| Outer Mirror Fold SW | Retractable outer mirror switch signal | OFF or ON | OFF: Retractable outer mirror switch not in retract position ON: Retractable outer mirror switch in retract position | - |
| Tester Display |
|---|
| Outer Mirror Fold SW |
OK:
On the Techstream screen, ON or OFF is displayed accordingly.
| NG | .gif) | GO TO STEP 9 |
|
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| 2. | PERFORM ACTIVE TEST USING TECHSTREAM |
(a) Enter the following menus: Body Electrical / Mirror L or Mirror R / Active Test.
(b) Perform the Active Test according to the display on the Techstream.
Body Electrical > Mirror L > Active Test| Tester Display | Measurement Item | Control Range | Diagnostic Note |
|---|---|---|---|
| Mirror Fold/Return | Mirror retract operation | OFF, Return or Fold |
|
| Tester Display |
|---|
| Mirror Fold/Return |
| Tester Display | Measurement Item | Control Range | Diagnostic Note |
|---|---|---|---|
| Mirror Fold/Return | Mirror retract operation | OFF, Return or Fold |
|
| Tester Display |
|---|
| Mirror Fold/Return |
| Result | Proceed to |
|---|---|
| Outer rear view mirror assemblies operate normally | A |
| Outer rear view mirror assembly (driver door) does not operate normally | B |
| Outer rear view mirror assembly (front passenger door) does not operate normally | C |
| A | | REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
| C | | GO TO STEP 6 |
|
| 3. | INSPECT OUTER REAR VIEW MIRROR ASSEMBLY (DRIVER DOOR) (RETRACTABLE MIRROR) |
(a) Remove the outer rear view mirror assembly (driver door).
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(b) Inspect the outer rear view mirror assembly (driver door) (retractable mirror).
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| NG | | REPLACE OUTER REAR VIEW MIRROR ASSEMBLY (DRIVER DOOR) |
|
| 4. | REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (DRIVER DOOR) |
(a) Temporarily replace the outer mirror control ECU assembly (driver door) with a new or known good one.
Click here
|
| 5. | CHECK POWER RETRACT MIRROR FUNCTION |
(a) Check the power retract mirror function operates normally.
Click here
OK:
Power retract mirror function operates normally.
| OK | | END (OUTER MIRROR CONTROL ECU ASSEMBLY (DRIVER DOOR) WAS DEFECTIVE) |
| NG | | REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
| 6. | INSPECT OUTER REAR VIEW MIRROR ASSEMBLY (FRONT PASSENGER DOOR) (RETRACTABLE MIRROR) |
(a) Remove the outer rear view mirror assembly (front passenger door).
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(b) Inspect the outer rear view mirror assembly (front passenger door)(retractable mirror).
Click here
| NG | | REPLACE OUTER REAR VIEW MIRROR ASSEMBLY (FRONT PASSENGER DOOR) |
|
| 7. | REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (FRONT PASSENGER DOOR) |
(a) Temporarily replace the outer mirror control ECU assembly (front passenger door) with a new or known good one.
Click here
|
| 8. | CHECK POWER RETRACT MIRROR FUNCTION |
(a) Check the power retract mirror function operates normally.
Click here
OK:
Power retract mirror function operates normally.
| OK | | END (OUTER MIRROR CONTROL ECU ASSEMBLY (FRONT PASSENGER DOOR) WAS DEFECTIVE) |
| NG | | REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
| 9. | 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 |
|
| 10. | 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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