TC and CG Terminal Circuit: Procedure

CHECK WIRE HARNESS AND CONNECTOR (TERMINAL TC of DLC3 - ECM)

Disconnect the A6 connector from the ECM.

Fig 1: Disconnecting A6 Connector From ECM
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Measure the resistance according to the value(s) in the table below.

Standard resistance

Tester Connection	Condition	Specified Condition
A6-3 (TC) - J21-13 (TC)	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (DLC3 - ECM)

OK: Go to next step

CHECK WIRE HARNESS AND CONNECTOR (TERMINAL CG of DLC3 - BODY GROUND)

Fig 2: Identifying Terminal CG Of DLC3

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

Standard resistance

Tester connection	Condition	Specified condition
J21-4 (CG) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (DLC3 - BODY GROUND)

OK: Go to next step

CHECK WIRE HARNESS AND CONNECTOR (TERMINAL TC of DLC3 - BODY GROUND)

Fig 3: Identifying DLC3 Connector Terminals

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

Standard resistance

Tester Connection	Condition	Specified Condition
J21-13 (TC) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR OR EACH ECU

OK → See step 4

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE