TC and CG Terminal Circuit

DESCRIPTION

Connecting terminals TC and CG of the DLC3 causes the system to enter the self-diagnostic mode. If a malfunction is present, DTCs will be output.

HINT:

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

WIRING DIAGRAM

INSPECTION PROCEDURE

1. CHECK WIRE HARNESS (TERMINAL TC of DLC3 - ECM)

1. Disconnect the A6 connector from the ECM.

2. 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

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

1. 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

3. CHECK WIRE HARNESS (TERMINALTC of DLC3 - BODY GROUND)

1. 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
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE