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.

1. Turn the ignition switch to the LOCK position.
2. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
3. Disconnect the connectors from the center airbag sensor.
4. Disconnect the connectors from the horn button.
5. Disconnect the connectors from the front passenger airbag.
6. Disconnect the connector from the No. 1 instrument panel airbag lower.
7. w/ Side and curtain shield airbag:
Disconnect the connector from the front seat airbag LH.
8. w/ Side and curtain shield airbag:
Disconnect the connector from the front seat airbag RH.
9. w/ Side and curtain shield airbag:
Disconnect the connector from the curtain shield airbag LH.
10. w/ Side and curtain shield airbag:
Disconnect the connector from the curtain shield airbag RH.
11. Disconnect the connector from the front seat outer belt LH.
12. 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