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

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Other materials:

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