1. ETACS Power-Supply and Ground Circuits
OPERATION DESCRIPTION
The battery supplies a stabilized 5V power supply to the electronic control unit, via the constant-voltage circuit and terminal D2 (which is directly connected to the battery).
ELECTRONIC CONTROL UNIT TERMINAL VOLTAGE
Check connection status of electronic control unit connector.
CHECKING THE GROUND CIRCUIT
Disconnect the connector and check at the wiring harness side.