TC and CG Terminal Circuit

DESCRIPTION

Connecting terminals TC and CG of the DLC3 causes the system to enter 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 (TC of DLC3 - HYBRID VEHICLE CONTROL ECU)

1. Disconnect the D1 connector from the DLC3 and H29 connector from the hybrid vehicle control ECU.

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

   Standard resistance:

   Tester Connection	Condition	Specified Condition
   H29-3 (TC) - D1-13 (TC)	Always	Below 1 Ω

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR (DLC3 - HYBRID VEHICLE CONTROL ECU)

OK

2. CHECK WIRE HARNESS (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
   D1-4 (CG) - Body ground	Always	Below 1 Ω

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

OK

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

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

   Standard resistance:

   Tester Condition	Condition	Specified Condition
   D1-13 (TC) - Body ground	Always	10 kΩ or higher

NG	REPAIR OR REPLACE WIRE HARNESS OR EACH ECU

OK
REPLACE HYBRID VEHICLE CONTROL ECU