Mirror Switch Circuit
Circuit diagnosis
DESCRIPTION
A switch signal of the outer mirror switch is transmitted to the selected outer mirror control ECU by way of the multiplex network body ECU. Then, the outer mirror control ECU activates the mirror motor to move the mirror UP, DOWN, RIGHT and LEFT in response to the input.- HINT:
- The power mirror control system is a part of the multiplex communication system. This system features shared communication wiring that reduces the wiring complexity of the communication lines. The first step in any repair is to confirm the proper operation of the communication system. Proceed with troubleshooting after the communication has been verified (See the Multiplex Communication System).
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1. READ VALUE ON INTELLIGENT TESTER |
Check the DATA LIST for proper function of the outer mirror switches.
Item
Test Details
Diagnostic Note
Mirror Selection SW (R)
Mirror selection switch signal for RH mirror/ON or OFF
ON: Switch is in Right position
OFF: Switch is in neutral or Left position
Mirror Selection SW (L)
Mirror selection switch signal for LH mirror/ON or OFF
ON: Switch is in Left position
OFF: Switch is in neutral or Right position
Mirror Position SW (R)
Mirror position switch signal (Right)/ON or OFF
ON: Switch R is ON
OFF: Any switch except R is ON or all switches are OFF
Mirror Position SW (L)
Mirror position switch signal (Left)/ON or OFF
ON: Switch L is ON
OFF: Any switch except L is ON or all switches are OFF
Mirror Position SW (Up)
Mirror position switch signal (Up)/ON or OFF
ON: Switch UP is ON
OFF: Any switch except UP is ON or all switches are OFF
Mirror Position SW (Dwn)
Mirror position switch signal (Down)/ON or OFF
ON: Switch DOWN is ON
OFF: Any switch except DOWN is ON or all switches are OFF
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| OK | ||
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| 2. INSPECT OUTER MIRROR SWITCH |
Remove the outer mirror switch.
Measure the resistance according to the value(s) in the table below when the switch is operated.
- Standard resistance:
- Mirror switch:
Tester Connection
Switch Position
Specified Condition
2 - 3
OFF
10 kΩ or higher
UP
225 to 275 Ω
DOWN
437 to 503 Ω
LEFT
744 to 856 Ω
RIGHT
437 to 503 Ω
1 - 2
L
90 to 110 Ω
R
10 Ω or less
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| OK | |
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| 3. CHECK WIRE HARNESS (OUTER MIRROR SWITCH - BODY ECU) |
Disconnect the R5 and B6 connectors.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester Connection
Condition
Specified Condition
R5-3 (M+) - B6-11 (MIRB)
Always
Below 1 Ω
R5-1 (MSW) - B6-12 (MIRS)
Always
Below 1 Ω
R5-2 (E1) - B6-3 (MIRE)
Always
Below 1 Ω
R5-3 (M+) - Body ground
Always
10 kΩ or higher
R5-1 (MSW) - Body ground
Always
10 kΩ or higher
R5-2 (E1) - Body ground
Always
10 kΩ or higher
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| OK | ||
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