B1243

MULTIPLEX COMMUNICATION: MULTIPLEX COMMUNICATION SYSTEM: B1243: GSW Terminal Circuit Malfunction
B1243 - GSW Terminal Circuit Malfunction

DESCRIPTION

This DTC is indicated when open or ground short of the GSW terminal is detected.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (BODY ECU - AIRBAG SENSOR ASSEMBLY)

(a) Disconnect connector "D23" of the airbag sensor assembly and connector "IE" of the body ECU.

(b) Check for an open or short circuit in the harness and connector between the airbag sensor assembly and body ECU.

OK:

There is no open or short circuit in the wire harness.

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

2. INSPECT BODY ECU

(a) Check that DTC B1243 is indicated when another body ECU in good condition is installed.

(b) Check if DTC B1243 is indicated after replacing the body ECU.

OK:

DTCs B1243 is not indicated.

NG -- REPLACE AIRBAG SENSOR ASSEMBLY

OK -- REPLACE BODY ECU (ORIGINAL BODY ECU IS FAILURE)