Mitsubishi 3000GT 1991 Service Manual page 917

CHECKING INDIVIDUAL PART AND CIRCUIT
1. ETACS POWER-SUPPLY AND GROUND CIRCUITS
"2: Vehicles with theft-alarm system
Description of operation
The battery supplies a stabilized 5V power supply to the electronic control unit, via the constant-voltage circuit
and terminal (51) directly connected to the battery. If there is an abnormal condition of the power-supply
circuit, other ETACS functions also will not operate.
Electronic control unit terminal voltage (Connection status of electronic control unit connector)
ECU terminal No. Signal
51
Electronic control unit power supply
Checking the ground circuit (Disconnect the connector and check the wiring harness side.)
Connected to/measured part
Terminal No.
57"' Electronic control unit ground
N O T E
"2: Vehicles with theft-alarm system
B O D Y - P o w e r W i n d o w
Battery
Measurement
Resistance
TSB Revision
Junction block
Jumper connector
ETACS unrt
Condition
At all times
Tester
Check conditions
connection
At all times
Terminal
voltage
System
voltage
Standard
Continuity