B1210

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

DESCRIPTION

HINT
This DTC is only output on vehicles equipped with a smart access with push-button start.

* This DTC is detected when communication between the power source control ECU stops for more than 10 seconds.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT FUSE (AM2)

(a) Remove the AM2 fuse from the cowl side J/B 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 J55 ECU connector.





(b) Measure the resistance and voltage of the wire harness side connector.

Standard voltage:





Standard resistance:





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

3. CHECK RESISTANCE OF COMMUNICATION LINE

(a) Disconnect the J55, J26 and 2F ECU connectors.





(b) Measure the resistance between the specified terminals on the wire harness side connectors.

Standard resistance:





Result:





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

C -- REPAIR OR REPLACE HARNESS OR CONNECTOR

A -- REPLACE POWER SOURCE CONTROL ECU