THEFT-ALARM SYSTEM
CHECKING THE CIRCUIT AND INDIVIDUAL PART
1
ETACS POWER-SUPPLY AND GROUND CIRCUITS
Off Draw
Description of operation
The battery supplies a stabilized
power supply to the ECU,
via the constant-voltage circuit and terminal
(which is
directly connected to the battery).
ECU terminal voltage (Connection condition of the ECU
connector)
ECU
Signal
Condition
Terminal
terminal No.
voltage
ECU power supply At all times
Checking the ground circuit (Disconnect the connector and
check at the wiring harness side)
ECU
No.
Connected
measured
component
Measurement
Tester
Check
Standard
ECU ground
A t a l l
Revision