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 gateway ECU stops for more than 10 seconds.






WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK OPERATION
(a) Without depressing the brake pedal, push the power switch repeatedly. Check that the power mode changes between OFF, ON (ACC) and ON (IG) alternately.
OK:
Key warning light illuminates or starts blinking according to power modes.
OK -- CHECK RESISTANCE OF COMMUNICATION LINE
NG -- Continue to next step.

2. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BODY GROUND)




(a) Disconnect the P6 ECU connector.
(b) Measure the resistance and voltage of the wire harness side connector.
Standard resistance:





Standard voltage





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.

3. CHECK RESISTANCE OF COMMUNICATION LINE




(a) Disconnect the P6 and G1 ECU connectors.
(b) Disconnect the C10 meter connector.
(c) Measure the resistance between the wire harness side connectors.
Standard resistance:






Result:






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