B1201

MULTIPLEX COMMUNICATION: MULTIPLEX COMMUNICATION SYSTEM: B1201: Mayday ECU Communication Stop

DTC B1201 - Mayday ECU Communication Stop

DESCRIPTION

This DTC is output when communication between the mayday ECU and body ECU stops.






WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK WIRE HARNESS (COMMUNICATION LINE)





(a) Disconnect the U45 and DJ ECU connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.
2. CHECK WIRE HARNESS (SOURCE VOLTAGE AND BODY GROUND)





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





Standard resistance





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- REPLACE MAYDAY ECU