TC and CG Terminal Circuit

SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: TC and CG Terminal Circuit

TC and CG Terminal Circuit

DESCRIPTION

DTC output mode is set by connecting terminals TC and CG of the DLC3. The DTCs are communicated through SRS warning light blinking patterns.
HINT: When one or more of the warning lights blinks continuously, the cause may be a ground short in the wiring of terminal TC of the DLC3 or an internal ground short in each ECU.

WIRING DIAGRAM





INSPECTION PROCEDURE
CAUTION: Be sure to perform the following procedures before troubleshooting to avoid unexpected airbag deployment.

1 Turn the power switch OFF.
2 Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

PROCEDURE

1. CHECK WIRE HARNESS (DLC3 - CENTER AIRBAG SENSOR AND BODY GROUND)




(a) Disconnect the A18 sensor connector.
(b) Measure the resistance of the wire harness side connectors.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY