1. ETACS Power-Supply and Ground Circuits

DESCRIPTION OF OPERATION
The battery supplies a stabilized 5V power supply to the ECU, via the constant-voltage circuit and terminal Q2 (which is directly connected to the battery).





ECU TERMINAL VOLTAGE
Connection condition of the ECU connector.





CHECKING THE GROUND CIRCUIT
Disconnect the connector and check at the wiring harness side.


NOTE: * indicates vehicles for Canada.