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.
Click here 
PROCEDURE
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1.
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READ VALUE USING TECHSTREAM (OUTER MIRROR SWITCH ASSEMBLY)
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(a) Using the Techstream, read the Data List.
Click here
Main Body
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Tester Display
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Measurement Item/Range
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Normal Condition
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Diagnostic Note
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Mirror Selection SW (R)
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Mirror master switch signal for RH mirror / ON or OFF
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ON: Mirror master switch is in R position
OFF: Mirror master switch is OFF or in L position
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-
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Mirror Selection SW (L)
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Mirror master switch signal for LH mirror / OFF or ON
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ON: Mirror master switch is in L position
OFF: Mirror master switch is OFF or in R position
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-
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Mirror Position SW (R)
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Mirror control switch signal (Right) / OFF or ON
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ON: RIGHT switch is ON
OFF: Any switch except RIGHT is ON or all switches are OFF
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-
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Mirror Position SW (L)
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Mirror control switch signal (Right) / OFF or ON
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ON: LEFT switch is ON
OFF: Any switch except LEFT is ON or all switches are OFF
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-
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Mirror Position SW (Up)
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Mirror control switch signal (Up) / OFF or ON
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ON: UP switch is ON
OFF: Any switch except UP is ON or all switches are OFF
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-
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Mirror Position SW (Dwn)
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Mirror control switch signal (Down) / OFF or ON
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ON: DOWN switch is ON
OFF: Any switch except DOWN is ON or all switches are OFF
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-
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OK:
The display is as specified in the normal condition column.
| OK |
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REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
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| NG |
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2.
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INSPECT OUTER MIRROR SWITCH ASSEMBLY
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(a) Remove the outer mirror switch assembly.
Click here
(b) Inspect the outer mirror switch assembly.
Click here
| NG |
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REPLACE OUTER MIRROR SWITCH ASSEMBLY
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| OK |
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3.
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CHECK HARNESS AND CONNECTOR (OUTER MIRROR SWITCH ASSEMBLY - MAIN BODY
ECU [MULTIPLEX NETWORK BODY ECU])
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(a) Disconnect the J131 outer mirror switch assembly connector.
(b) Disconnect the J164 main body ECU (multiplex network body ECU) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
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Tester Connection
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Condition
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Specified Condition
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J131-3 (M+) - J164-4 (MIRB)
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Always
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Below 1 Ω
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J131-1 (MSW) - J164-5 (MIRS)
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Always
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Below 1 Ω
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J131-2 (E) - J164-6 (MIRE)
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Always
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Below 1 Ω
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J131-3 (M+) or J164-4 (MIRB) - Body ground
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Always
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10 kΩ or higher
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J131-1 (MSW) or J164-5 (MIRS) - Body ground
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Always
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10 kΩ or higher
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J131-2 (E) or J164-6 (MIRE) - Body ground
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Always
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10 kΩ or higher
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| OK |
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REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
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| NG |
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REPAIR OR REPLACE HARNESS OR CONNECTOR
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