TC and CG Terminal Circuit: Procedure

WARNING: This page is about a different car, the 2011 Toyota Matrix. However, it is still accessible from the selected car via links, so may be relevant.

CHECK CAN COMMUNICATION SYSTEM

Check if the CAN communication DTC is output. Refer to DTC CHECK / CLEAR .

Result

Result	Proceed to
DTC is not output	A
DTC is output	B

B → See step 6

A: Go to next step

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

Turn the ignition switch off.

Fig 1: Checking Terminal TC Of DLC3 And ECM Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Disconnect the ECM connector.

Measure the resistance of the wire harness side connectors.

Standard Resistance

Tester Connection (DLC3 - ECM)	Condition	Specified Condition
E15-13 (TC) - A37-27 (TC)	Always	Below 1 Ω
E15-13 (TC) - Body Ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step

CHECK WIRE HARNESS (CG OF DLC3 - BODY GROUND)

Measure the resistance of the DLC3.

Fig 2: Checking Wire Harness (CG Of DLC3 - Body Ground)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard Resistance

Tester Connection	Condition	Specified Condition
E15-4 (CG) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step

CHECK WIRE HARNESS (TC OF DLC3 - BODY GROUND)

Measure the resistance of the DLC3.

Fig 3: Checking Wire Harness (TC Of DLC3 - Body Ground)

Standard Resistance

Tester Connection	Condition	Specified Condition
E15-13 (TC) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR

OK → See step 5

REPLACE 4WD CONTROL ECU. Refer to REMOVAL
INSPECT CAN COMMUNICATION SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING