Toyota Venza: TC and CG Terminal Circuit

Toyota Venza Service Manual / Supplemental Restraint Systems / 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.

HINT:

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

WIRING DIAGRAM

PROCEDURE

1.	CHECK WIRE HARNESS (TC OF DLC3 - TC OF ECM)

(a) Turn the ignition switch off.

(b) Disconnect the connector from the ECM.

Standard Resistance:

for 2GR-FE

Tester Connection	Condition	Specified Condition
D1-13 (TC) - A41-16 (TC)	Always	Below 1 Ω

for 1AR-FE

Tester Connection	Condition	Specified Condition
D1-13 (TC) - A49-7 (TC)	Always	Below 1 Ω

Text in Illustration

*1	Front view of wire harness connector (to DLC3)
*2	Front view of wire harness connector (to ECM)
*3	for 2GR-FE
*4	for 1AR-FE

REPLACE WIRE HARNESS

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

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
D1-4 (CG) - Body ground	Always	Below 1 Ω

Text in Illustration

*1	Front view of wire harness connector (to DLC3)

REPLACE WIRE HARNESS

3.	CHECK WIRE HARNESS (TC OF DLC3 - BODY GROUND)

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
D1-13 (TC) - Body ground	Always	1 MΩ or higher

Text in Illustration

*1	Front view of wire harness connector (to DLC3)

REPLACE CENTER AIRBAG SENSOR ASSEMBLY

REPLACE WIRE HARNESS OR EACH ECU

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