B1209

MULTIPLEX COMMUNICATION: MULTIPLEX COMMUNICATION SYSTEM: B1209: 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.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

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





(a) Disconnect the O9 ECU connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (OUTER MIRROR CONTROL ECU LH - GROUND)





(a) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
3. CHECK COMMUNICATION LINE





(a) Disconnect the G4 ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






Result:






C -- REPAIR OR REPLACE HARNESS OR CONNECTOR
B -- REPAIR OR REPLACE HARNESS OR CONNECTOR AND OUTER MIRROR CONTROL ECU LH
A -- REPLACE OUTER MIRROR CONTROL ECU LH