B2419 Malfunction of multiplex communication system Open or short of multiplex communication system circuit

DESCRIPTION

The AFS ECU receives the signal regarding lighting condition of the headlight, shift position signal of the transaxle, READY condition signal from HV control ECU and vehicle speed signal from the combination meter using multiplex communication.
When the DTC (B2419) is output, the other DTCs are output at the same time.

DTC No.	DTC Detecting Condition	Trouble Area
B2419	Malfunction of multiplex communication system Open or short of multiplex communication system circuit	Multiplex communication system Harness or connector AFS ECU

INSPECTION PROCEDURE

1. GO TO MULTIPLEX COMMUNICATION SYSTEM

Result:

Condition	Proceed to
OK (When checking from the DTC)	A
OK (When checking from the PROBLEM SYMPTOMS TABLE)	B
NG	C

B	PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
C	GO TO FLOW CHART

A
REPLACE AFS ECU