AIRBAG SYSTEM > TC and CG Terminal Circuit

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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


H100392E02


INSPECTION PROCEDURE

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

  1. Turn the ignition switch OFF.
  2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
1.CHECK WIRE HARNESS (DLC3 - CENTER AIRBAG SENSOR ASSEMBLY AND BODY GROUND)
H100393E02

  1. Disconnect the A14 ECU connector.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Specified Condition
    D1-13 (TC) - A14-15 (TC)
    		Below 1 Ω
    D1-4 (CG) - Body ground
    		Below 1 Ω
    A14-15 (TC) - Body ground
    		1 MΩ or higher



NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK

REPLACE CENTER AIRBAG SENSOR ASSEMBLY