Toyota Sequoia (2005). Manual - part 493

–

DIAGNOSTICS

BODY CONTROL SYSTEM

DI–1767

1961

Remote control mirror switch circuit (w/ Driving position memory)

CIRCUIT DESCRIPTION

The remote control mirror switch has different levels of resistance depending on the switch position.
The body ECU senses the switch position through the resistance of the remote control mirror switch.
The body ECU sends an up/down/right/left signal to the driver door ECU and the passenger door ECU via
BEAN.
The mirror’s driving position and retract position are directly controlled by the remote control mirror switch.

DID9C–01

I28524

A

B

C

D

F

P

1

2

3

4

5

6

7

8

28

29

30

8

7

1

1

6

20

13

14

13

14

P

P

P–L

A

B

B

B

Y

Y

Y

Y

M+

MSW

E

B

MF

8

MR

E2

R5
Remote Control
Mirror Switch

Body ECU

MIRB

MIRS

MIRE

G–B

LG–B

Instrument Panel J/B

J14

J15

J/C

1C

1E

1L

1C

1

2

CIG

AM1

F10
FL Block

I18
Ignition Switch

R18 
Remote Control Mirror RH

B5

B5

B5

LG

LG

LG

LG

W–B

IM

MF

MR

J6

J6

J6

J6

J7

J7

AM1

ACC

1

3

W–L

W

ALT

B

II1

II1

R17 
Remote Control Mirror LH

Battery

*1

*1

J/C

(*1): Control Circuit

MF

MR

DI–1768

–

DIAGNOSTICS

BODY CONTROL SYSTEM

1962

WIRING DIAGRAM

–

DIAGNOSTICS

BODY CONTROL SYSTEM

DI–1769

1963

INSPECTION PROCEDURE

HINT:
When using the hand–held tester, start the inspection from step 1 and when not using the hand–held tester,
start from step 2.

1

Check remote mirror control switch using hand–held tester.

PREPARATION:
(a)

Connect the hand–held tester to the DLC3.

(b)

Turn the ignition switch ON.

CHECK:
According to the display on the tester, read the ”DATA LIST”.
BODY ECU:

Item

Measurement Item/Display

(Range)

Normal Condition

Diagnostic Note

MIRR SEL SW R

Remote control mirror switch pas-

senger side/ON or OFF

ON: Remote control mirror switch

passenger side is selected

OFF: Remote control mirror switch

passenger side is not selected

–

MIRR SEL SW L

Remote control mirror switch driv-

er side/ON or OFF

ON: Remote control mirror switch

driver side is selected

OFF: Remote control mirror switch

driver side is not selected

–

MIRR POS SW R

Remote control mirror switch R

position/ON or OFF

ON: Remote control mirror switch

R position is selected

OFF: Remote control mirror switch

R position is not selected

–

MIRR POS SW L

Remote control mirror switch L

position/ON or OFF

ON: Remote control mirror switch

L position is selected

OFF: Remote control mirror switch

L position is not selected

–

MIRR POS SW UP

Remote control mirror switch UP

position/ON or OFF

ON: Remote control mirror switch

UP position is selected

OFF: Remote control mirror switch

UP position is not selected

–

MIRR POS SW DWN

Remote control mirror switch

DOWN position/ON or OFF

ON: Remote control mirror switch

DOWN position is selected

OFF: Remote control mirror switch

DOWN position is not selected

–

OK:

The indication on the tester switches between ON and OFF in accordance with the remote con-
trol mirror switch status.

OK

Proceed to next circuit inspection shown in
problem symptoms table (See page 

DI–1686

).

NG

DI–1770

–

DIAGNOSTICS

BODY CONTROL SYSTEM

1964

2

Check remote control mirror switch (See page 

BE–115

).

NG

Replace remote control mirror switch.

OK

3

Check voltage between remote control mirror switch and battery, remote control
mirror switch and body ground.

PREPARATION:
(a)

Disconnect the remote control mirror switch connector.

(b)

Turn the ignition switch ON.

CHECK:
Measure the voltage between terminals R5–6 (B) and R5–2 (E) of the remote control mirror switch.
OK:

Voltage: 10 to 14 V

NG

Repair or replace harness or connector.

OK

4

Check wire harness and connector between remote control mirror switch and re-
mote control mirror (See page 

IN–35

).

NG

Repair or replace harness or connector.

OK

5

Check retract motor operation (See page 

BE–115

).

NG

Replace remote control mirror.

OK