Toyota Venza manuals

Toyota Venza: TC and CG Terminal Circuit

DESCRIPTION

Connecting terminals TC and CG of the DLC3 causes the AWD control ECU to display 2-digit DTCs by flashing the AWD warning light.

HINT:

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

WIRING DIAGRAM


CAUTION / NOTICE / HINT

HINT:

Check the condition of each related circuit connector before troubleshooting (See page ).


PROCEDURE

1.

CHECK CAN COMMUNICATION SYSTEM

(a) Check if the CAN communication DTC is output (See page ).


Result

Proceed to

DTC is not output

A

DTC is output

B


B

REPAIR CAN COMMUNICATION SYSTEM


A

2.

CHECK WIRE HARNESS (TC OF DLC3 - TC OF ECM AND BODY GROUND)

(a) Turn the ignition switch off.


(b) Disconnect the ECM connector.

(c) Measure the resistance of the wire harness side connectors.

Standard Resistance:

Tester Connection

(DLC3 - ECM)

Condition

Specified Condition

D1-13 (TC) - A41-16 (TC)

Always

Below 1 Ω

D1-13 (TC) - A49-7 (TC)

Always

Below 1 Ω

D1-13 (TC) - Body Ground

Always

10 kΩ or higher

Text in Illustration

*1

DLC3

*2

Front view of wire harness connector

(to ECM)

*3

2GR-FE

*4

1AR-FE


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR


OK

3.

CHECK WIRE HARNESS (CG OF DLC3 - BODY GROUND)

(a) Measure the resistance of the DLC3.

Standard Resistance:

Tester Connection

Condition

Specified Condition

D1-4 (CG) - Body ground

Always

Below 1 Ω

Text in Illustration

*1

DLC3



NG

REPAIR OR REPLACE HARNESS OR CONNECTOR


OK

4.

CHECK WIRE HARNESS (TC OF DLC3 - BODY GROUND)

(a) Measure the resistance of the DLC3.

Standard Resistance:

Tester Connection

Condition

Specified Condition

D1-13 (TC) - Body ground

Always

Below 1 Ω

Text in Illustration

*1

DLC3



OK

REPLACE AWD CONTROL ECU


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

AWD Warning Light Remains ON
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