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Home >> Lexus >> 1995 >> SC 400 V8-4.0L (1UZ-FE) >> Repair and Diagnosis >> Restraints and Safety Systems >> Air Bag Systems >> Testing and Inspection >> Component Tests and General Diagnostics >> TC Terminal Circuit

TC Terminal Circuit



Circuit Description
By connecting terminals Tc and E1 of the DLC1 or DLC2, the center airbag sensor assembly is set in the diagnostic trouble code output mode. The diagnostic trouble codes are displayed by the blinking of the SRS warning light.

Troubleshooting for this system is different depending on whether the diagnostic trouble code is not displayed SRS warning light is always lit up with a DTC check procedure, or is displayed without a DTC check procedure. Confirm the problem symptoms first before selecting the appropriate troubleshooting procedure.

HINT: If the diagnostic trouble code is not displayed or SRS warning light is always lit up with a DTC check procedure perform the following troubleshooting:

Diagnostic Chart:





HINT: If the diagnostic trouble code is continuously displayed without a DTC check procedure, perform the following troubleshooting:

Diagnostic Chart (Cont'd):





Wiring Diagram:





Inspection Procedure

HINT: If the diagnostic trouble code is not displayed, perform the following troubleshooting:

Step 1:





Step 2:





Step 3:





HINT: If the diagnostic trouble code is continuously displayed, perform the following troubleshooting:

Step 1:





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