Toyota Tundra Service Manual: Power Mirror cannot be Adjusted with Power Mirror Switch

Toyota Tundra Service Manual / Vehicle Interior / Mirror / Power Mirror Control System(w/ Memory) / Power Mirror cannot be Adjusted with Power Mirror Switch

DESCRIPTION

When the outer mirror switch assembly (mirror master switch) is operated, right/left selection signals are sent to the main body ECU (multiplex network body ECU). The main body ECU (multiplex network body ECU) sends the received right/left selection signals to the outer mirror control ECU assemblies via CAN communication.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

First perform the communication function inspections in How to Proceed with Troubleshooting to confirm that there are no CAN communication malfunctions before troubleshooting this problem.

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PROCEDURE

1.	READ VALUE USING TECHSTREAM (OUTER MIRROR SWITCH ASSEMBLY)

(a) Using the Techstream, read the Data List.

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Main Body

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
Mirror Selection SW (R)	Mirror master switch signal for RH mirror / ON or OFF	ON: Mirror master switch is in R position OFF: Mirror master switch is OFF or in L position	-
Mirror Selection SW (L)	Mirror master switch signal for LH mirror / OFF or ON	ON: Mirror master switch is in L position OFF: Mirror master switch is OFF or in R position	-
Mirror Position SW (R)	Mirror control switch signal (Right) / OFF or ON	ON: RIGHT switch is ON OFF: Any switch except RIGHT is ON or all switches are OFF	-
Mirror Position SW (L)	Mirror control switch signal (Right) / OFF or ON	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) / OFF or ON	ON: UP switch is ON OFF: Any switch except UP is ON or all switches are OFF	-
Mirror Position SW (Dwn)	Mirror control switch signal (Down) / OFF or ON	ON: DOWN switch is ON OFF: Any switch except DOWN is ON or all switches are OFF	-

OK:

The display is as specified in the normal condition column.

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

2.	INSPECT OUTER MIRROR SWITCH ASSEMBLY

(a) Remove the outer mirror switch assembly.

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(b) Inspect the outer mirror switch assembly.

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REPLACE OUTER MIRROR SWITCH ASSEMBLY

3.	CHECK HARNESS AND CONNECTOR (OUTER MIRROR SWITCH ASSEMBLY - MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU])

(a) Disconnect the J131 outer mirror switch assembly connector.

(b) Disconnect the J164 main body ECU (multiplex network body ECU) connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
J131-3 (M+) - J164-4 (MIRB)	Always	Below 1 Ω
J131-1 (MSW) - J164-5 (MIRS)	Always	Below 1 Ω
J131-2 (E) - J164-6 (MIRE)	Always	Below 1 Ω
J131-3 (M+) or J164-4 (MIRB) - Body ground	Always	10 kΩ or higher
J131-1 (MSW) or J164-5 (MIRS) - Body ground	Always	10 kΩ or higher
J131-2 (E) or J164-6 (MIRE) - Body ground	Always	10 kΩ or higher

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

REPAIR OR REPLACE HARNESS OR CONNECTOR

Parts Location

Power Mirror Surface Position is not Memorized

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