Toyota Tundra. Manual — part 443

Fig. 18: Identifying J4 ECU And L6 Switch Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: REPLACE MAIN BODY ECU

FRONT PASSENGER SIDE POWER MIRROR CANNOT BE ADJUSTED WITH POWER MIRROR
SWITCH

SYSTEM DESCRIPTION

The circuit detects the conditions of the outer mirror switch.

The outer mirror switch sends information about the operating condition of the mirror switch (switch input
signals) through the CAN communication line. Then the switch input signals are sent to the outer mirror control
ECU. Mirror adjustment is controlled by the outer mirror control ECU.

WIRING DIAGRAM

L6-1 (MSW) - Body ground

Always

10 kohms or higher

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Mirror - Tundra

Fig. 19: Front Passenger Side Power Mirror Cannot Be Adjusted With Power Mirror Switch - Wiring
Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION PROCEDURE

1. CHECK DTC

a. Use the Techstream to check if the CAN communication system is functioning normally (see

DIAGNOSIS SYSTEM ).

Result

DTC RESULT CHART

B: Go TO CAN COMMUNICATION SYSTEM (See DIAGNOSIS SYSTEM )

A: Go to Next Step

2. READ VALUE OF TECHSTREAM (OUTER MIRROR SWITCH)

Result

Proceed to

CAN DTC is not output

A

CAN DTC is output

B

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Mirror - Tundra

a. Check the DATA LIST for proper functioning of the outer mirror switch.

Techstream

Main body

MAIN BODY TECHSTREAM DATA LIST

OK: On tester screen, each item changes between ON and OFF according to above
chart.

NG: Go to step 5

OK: Go to Next Step

3. INSPECT OUTER REAR VIEW MIRROR RH

a. Remove the mirror RH (see REMOVAL ).

b. Apply battery voltage and check the operation of the power mirror.

OK

OUTER REAR VIEW MIRROR RH MEASUREMENT CONDITION SPECIFIED
CONDITION CHART

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic

Note

Mirror selection

SW (Right)

Mirror master switch signal
for RH mirror / ON or OFF

ON: Switch is in R position
OFF: Switch is OFF or in L
position

-

Mirror position

SW (Right)

Mirror control switch signal
(RIGHT) / ON or OFF

ON: RIGHT switch is ON
OFF: Any switch except
RIGHT is ON or all switches
are OFF

-

Mirror position

SW (Left)

Mirror control switch signal
(LEFT) / ON or OFF

ON: LEFT switch is ON
OFF: Any switch except
LEFT is ON or all switches
are OFF

-

Mirror position

SW (UP)

Mirror control switch signal
(UP) / ON or OFF

ON: UP switch is ON
OFF: Any switch except UP is
ON or all switches are OFF

-

Mirror position

SW (Down)

Mirror control switch signal
(DOWN) / ON or OFF

ON: DOWN switch is ON
OFF: Any switch except
DOWN is ON or all switches
are OFF

-

Measurement Condition

Specified Condition

Battery positive (+) --> Terminal 10 (MV)

Battery negative (-) --> Terminal 11 (M+)

Turns upward (A)

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Mirror - Tundra

Fig. 20: Inspecting Outer Rear View Mirror RH
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPLACE OUTER REAR VIEW MIRROR RH (see REMOVAL )

OK: Go to Next Step

4. CHECK HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR RH - OUTER

MIRROR CONTROL ECU)

a. Disconnect the N8 ECU connector.

b. Disconnect the M6 mirror connector.

c. Measure the resistance according to the value(s) in the table below.

Standard resistance

HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR RH - OUTER MIRROR
CONTROL ECU) TESTER CONNECTION SPECIFIED CONDITION CHART

Battery negative (-) --> Terminal 10 (MV)

Battery positive (+) --> Terminal 11 (M+)

Turns downward (B)

Battery positive (+) --> Terminal 12 (MH)

Battery negative (-) --> Terminal 11 (M+)

Turns left (C)

Battery negative (-) --> Terminal 12 (MH)

Battery positive (+) --> Terminal 11 (M+)

Turns right (D)

Tester Connection

Condition Specified Condition

N8-38 (M+R) - M6-11 (M+)

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Mirror - Tundra