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 |
|
WIRING DIAGRAM

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

Standard voltage

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

Standard resistance

3 CHECK COMMUNICATION LINE

Standard resistance

Result

REPLACE OUTER MIRROR CONTROL ECU LH
Passenger Side Outer Mirror ECU
Short to B+ in Door System Communication
Bus Malfunction/ Short to GND in Door System Communication
Bus MalfunctionRemoval
HINT:
On the RH side, use the same procedures as on the LH side.
1. REMOVE SLIDE DOOR
Remove the rear door scuff plate (See page IR-7).
Remove the back door scuff plate (See page ED-
214).
Remove the quarter trim panel (See page IR-9).
Remove the upper rail cushion from the rail.
...
For automatic air conditioning system
ON-VEHICLE INSPECTION
1. INSPECT AIR INLET CONTROL SERVO MOTOR
(a) Remove the air inlet control servo motor.
(b) Connect the positive (+) lead from the battery to
terminal 4 and negative (-) lead to terminal 5, then
check that the lever turns to "RECIRCULATION"
side smoothly.
...
Removal
1. REMOVE ROOF HEADLINING ASSEMBLY
2. REMOVE SLIDING ROOF SIDE GARNISH LH
Disengage the 3 claws.
Disengage the rear clip.
Disengage the front clip.
Remove the slide garnish by pulling it rearward.
3. REMOVE SLIDING ROOF SIDE GARNISH RH
HINT:
Use the same procedures described abov ...