TC and CG Terminal Circuit

CRUISE CONTROL: CRUISE CONTROL SYSTEM: TC and CG Terminal Circuit

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

PROCEDURE

1. CHECK WIRE HARNESS (TC OF DLC3 - ECM)





(a) Disconnect the A7 ECM connector.
(b) Measure the resistance of the wire harness side connectors.
Standard resistance:





HINT:
- *1: for 1UR-FSE
- *2: for 2GR-FSE

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (DLC3 - ECM)
OK -- Continue to next step.
2. CHECK WIRE HARNESS (CG OF DLC3 - BODY GROUND)





(a) Measure the resistance of the connector.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (DLC3 - BODY GROUND)
OK -- Continue to next step.
3. CHECK WIRE HARNESS (TC OF DLC3 - BODY GROUND)





(a) Measure the resistance of the connector.
Standard resistance:






NG -- REPAIR OR REPLACE WIRE HARNESS OR EACH ECU
OK -- REPLACE ECM