Lexus ES manuals

Lexus ES: Power Retractable Mirrors do not Operate with Power Retract Mirror Switch

Lexus ES (XZ10) Service Manual / Vehicle Interior / Mirror (ext) / Power Mirror Control System (for Gasoline Model With Memory) / 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:

  • 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

  • Before replacing the main body ECU (multiplex network body ECU), refer to Registration.

    Click here

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

-
Body Electrical > Main Body > Data List

Tester Display

Outer Mirror Fold SW

OK:

On the Techstream screen, ON or OFF is displayed accordingly.

NG

GO TO STEP 9

OK

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
  • Operate with engine switch on (IG) and the vehicle stopped.
  • This test activates the Fold / Return.
  • This operation can be confirmed by watching the mirror move in the desired direction.
Body Electrical > Mirror L > Active Test

Tester Display

Mirror Fold/Return
Body Electrical > Mirror R > Active Test

Tester Display

Measurement Item

Control Range

Diagnostic Note

Mirror Fold/Return

Mirror retract operation

OFF, Return or Fold
  • Operate with engine switch on (IG) and the vehicle stopped.
  • This test activates the Fold / Return.
  • This operation can be confirmed by watching the mirror move in the desired direction.
Body Electrical > Mirror R > Active Test

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

B

3.

INSPECT OUTER REAR VIEW MIRROR ASSEMBLY (DRIVER DOOR) (RETRACTABLE MIRROR)

(a) Remove the outer rear view mirror assembly (driver door).

Click here

(b) Inspect the outer rear view mirror assembly (driver door) (retractable mirror).

Click here

NG

REPLACE OUTER REAR VIEW MIRROR ASSEMBLY (DRIVER DOOR)

OK

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

NEXT

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).

Click here

(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)

OK

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

NEXT

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.

Click here

(b) Inspect the outer mirror switch assembly.

Click here

NG

REPLACE OUTER MIRROR SWITCH ASSEMBLY

OK

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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SEE MORE:

 Terminals Of Ecu

TERMINALS OF ECU CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (a) Disconnect the MB main body ECU (multiplex network body ECU) connector. Click here (b) Measure the voltage and resistance according to the value(s) in the table below. HINT: Measure

 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

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