B1205

NETWORKING: MULTIPLEX COMMUNICATION SYSTEM: B1205: AFS ECU Communication Stop

DTC B1205 - AFS ECU Communication Stop

DESCRIPTION
- This DTC is detected if communication between the AFS ECU and the gateway ECU stops for more than 10 seconds.





WIRING DIAGRAM





INSPECTION PROCEDURE
HINT: If "+B of GND short malfunction of communication bus" DTCs (B1266 and B1267) are detected at the same time as "communication stop" DTC B1205, repair the "+B or GND short malfunction of communication bus" DTCs first B1266.

PROCEDURE

1. INSPECT FUSE (H-LP LVL)
(a) Remove the H-LP LVL fuse from the main body ECU LH (cowl side junction block LH).
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






NG -- REPLACE FUSE (H-LP LVL)
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (AFS ECU - BATTERY AND BODY GROUND)




(a) Disconnect the A27 connector.
(b) Turn the engine switch on (IG).
(c) Measure the voltage and resistance according to the value(s) in the table below.
Standard Voltage:






Standard Resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (AFS ECU - BATTERY AND BODY GROUND)
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (COMMUNICATION LINE)




(a) Disconnect the A27, J58 and J34 connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE AFS ECU