B1210

MULTIPLEX COMMUNICATION: MULTIPLEX COMMUNICATION SYSTEM: B1210: Power ECU Stop

DTC B1210 - Power ECU Stop

DESCRIPTION
- This DTC is detected when communication between the power source control ECU and the network gateway ECU stops for more than 10 seconds.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT FUSE (AM2)
(a) Remove the AM2 fuse from the main body ECU RH.
(b) Measure the resistance of the fuse.
Standard resistance:
Below 1 Ohms
NG -- REPLACE FUSE
OK -- Continue to next step.
2. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY AND BODY GROUND)





(a) Disconnect the K73 ECU connector.
(b) Measure the resistance and voltage of the wire harness side connector.
Standard resistance:
Standard voltage










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





(a) Disconnect the K66 and K73 ECU connectors.
(b) Disconnect the Q13 switch connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:






Result





C -- REPAIR OR REPLACE HARNESS OR CONNECTOR
B -- REPAIR OR REPLACE POWER SOURCE CONTROL ECU AND WIRE HARNESS OR CONNECTOR
A -- REPLACE POWER SOURCE CONTROL ECU