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 displayed by blinking the SRS warning light.

WIRING DIAGRAM





HINT
When each warning light keeps blinking, a ground short in the wiring of terminal TC of the DLC3 or an internal ground short in each ECU is suspected.

INSPECTION PROCEDURE

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

* Turn the ignition switch to the LOCK position.

* Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.

* Disconnect the connectors from the center airbag sensor.

* Disconnect the connectors from the horn button.

* Disconnect the connectors from the front passenger airbag.

* Disconnect the connector from the No. 1 instrument panel airbag lower.

* w/ Side and curtain shield airbag:

* Disconnect the connector from the front seat airbag LH.

* w/ Side and curtain shield airbag:

* Disconnect the connector from the front seat airbag RH.

* w/ Side and curtain shield airbag:

* Disconnect the connector from the curtain shield airbag LH.

* w/ Side and curtain shield airbag:

* Disconnect the connector from the curtain shield airbag RH.

* Disconnect the connector from the front seat outer belt LH.

* Disconnect the connector from the front seat outer belt RH.

PROCEDURE

1. CHECK WIRE HARNESS (TC OF DLC3 - TC OF CENTER AIRBAG SENSOR ASSEMBLY)





(a) Measure the resistance according to the value(s) in the table below.

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR (TC OF DLC3 - TC OF CENTER AIRBAG SENSOR ASSEMBLY)
OK -- Continue to next step.

2. CHECK WIRE HARNESS (CG OF DLC3 - BODY GROUND)





(a) Measure the resistance according to the value(s) in the table below.

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR (CG OF DLC3 - BODY GROUND)
OK -- Continue to next step.

3. CHECK WIRE HARNESS (TC OF CENTER AIRBAG SENSOR ASSEMBLY - BODY GROUND)





(a) Measure the resistance according to the value(s) in the table below.

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR OR REPLACE EACH ECU

OK -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY