AIRBAG SYSTEM TC and CG Terminal Circuit
DESCRIPTION
DTC output mode is set by connecting terminals TC and CG of the DLC3.
DTCs are displayed by blinking of the SRS warning light.
Tech Tips
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When each warning light stays blinking, a ground short in the wiring of terminal TC of the DLC3 or an internal ground short in an ECU connected to the TC circuit is suspected.
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A DTC output mode signal is transmitted through the CAN communication system to each ECU including the center airbag sensor assembly. Thus when all systems do not enter DTC output mode, there may be an power management control ECU malfunction.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
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CHECK WIRE HARNESS (TC OF DLC3 - TC OF POWER MANAGEMENT CONTROL ECU)
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Text in Illustration *a Front view of wire harness connector
(to DLC3)
*b Front view of wire harness connector
(to Power Management Control ECU)
Turn the power switch off.
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Disconnect the connector from the power management control ECU.
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Measure the resistance according to the value(s) in the table below.
Standard Resistance Tester Connection Condition Specified Condition E11-13 (TC) - E111-11 (TC) Always Below 1 Ω
NG 
REPAIR OR REPLACE WIRE HARNESS
OK 
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CHECK WIRE HARNESS (CG OF DLC3 - BODY GROUND)
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Text in Illustration *a Front view of wire harness connector
(to DLC3)
Measure the resistance according to the value(s) in the table below.
Standard Resistance Tester Connection Condition Specified Condition E11-4 (CG) - Body ground Always Below 1 Ω
NG
REPAIR OR REPLACE WIRE HARNESS
OK
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CHECK WIRE HARNESS (TC OF DLC3 - BODY GROUND)
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Text in Illustration *a Front view of wire harness connector
(to DLC3)
Measure the resistance according to the value(s) in the table below.
Standard Resistance Tester Connection Condition Specified Condition E11-13 (TC) - Body ground Always 1 MΩ or higher
NG
REPAIR OR REPLACE WIRE HARNESS OR REPLACE EACH ECU
OK 
REPLACE CENTER AIRBAG SENSOR ASSEMBLY Click here
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