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:

Installation
HINT:  Use the same procedures for the RH side and LH side.  The procedures listed below are for the LH side. 1. INSTALL FRONT AIRBAG SENSOR LH  Check that the ignition switch is off.  Check that the battery negative (-) terminal is disconnected. CAUTION: ...

Starting the engine
Shift the shift lever to P and apply the brakes. Touch the Toyota emblem side of the electronic key to the engine switch. An alarm will sound to indicate that the start function cannot detect the electronic key that is touched to the engine switch if any of the doors is opened ...

Removal
1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 2. REMOVE FRONT DOOR SCUFF PLATE LH 3. REMOVE COWL SIDE TRIM SUB-ASSEMBLY LH 4. REMOVE LOWER INSTRUMENT PANEL FINISH PANEL SUB-ASSEMBLY LH (See page IP-6) 5. REMOVE TIRE PRESSURE WARNING RESET SWITCH (a) Disengage the 2 claws and remove t ...

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