Toyota RAV4 manuals

Toyota Sienna Service Manual: Driver Side Outer Mirror

DTC B1209 Driver Side Outer Mirror

DESCRIPTION

This DTC is detected when communication between the outer mirror control ECU LH and multiplex network gateway ECU stops for more than 10 seconds

DTC No.

DTC Detection Condition

Trouble Area

B1209

Driver side outer mirror ECU communication stops
  • Outer mirror control ECU LH
  • Wire harness

WIRING DIAGRAM

WIRING DIAGRAM

INSPECTION PROCEDURE

1 CHECK HARNESS AND CONNECTOR (OUTER MIRROR CONTROL ECU LH - BATTERY)

 CHECK HARNESS AND CONNECTOR

  1. Disconnect the O9 ECU connector.
  2. Measure the voltage according to the value(s) in the table below.

Standard voltage

Standard voltage

2 CHECK HARNESS AND CONNECTOR (OUTER MIRROR CONTROL ECU LH - GROUND)

CHECK HARNESS AND CONNECTOR

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

Standard resistance

Standard resistance

3 CHECK COMMUNICATION LINE

CHECK COMMUNICATION LINE

  1. Disconnect the G4 ECU connector.
  2. Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

Result

Result

REPLACE OUTER MIRROR CONTROL ECU LH

Passenger Side Outer Mirror ECU
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Short to B+ in Door System Communication Bus Malfunction/ Short to GND in Door System Communication Bus Malfunction
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Other materials:

Removal
1. REMOVE NO. 1 REAR SEAT OUTER BELT ASSEMBLY (for 8-Passenger) HINT: Refer to the instructions for disassembly of the rear No .1 seat assembly (for center seat).  Remove the rear seatback board.  Remove the rear seat shoulder belt cover.  Remove the 2 bolts, 2 nuts and N ...

Checking and replacing fuses
If any of the electrical components do not operate, a fuse may have blown. If this happens, check and replace the fuses as necessary. Turn the engine switch to the “LOCK” position (vehicles without a smart key system) or off (vehicles with a smart key system). Open the fuse box cover. ...

Editing the contact data
For PBAP compatible Bluetooth® phones, this function is available when “Automatic Transfer” is set to off. Select “Edit Contact”. Select the desired contact. Select corresponding to the desired name or number. For editing the name Follow the steps in “Registerin ...

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