CRUISE CONTROL SYSTEM > TC and CG Terminal Circuit

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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


E109905E01


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.



    E109919E01

  1. 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)


    E107088E16

  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)


    E107088E17

  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