3000GT AWD V6-2972cc 3.0L DOHC Turbo (1991)
Power Supply And Ignition Switch Circuit
KEY "ON" POWER CIRCUIT
1. Disconnect the negative battery cable and the ECU connector.
2. Reconnect the negative battery cable and turn the key to the ON position.
3. Using a volt meter, check for voltage between ECU harness connector terminal 62 and ground.
Voltage
System voltage.
4. Turn the key to the OFF position and disconnect the control relay.
5. Using a volt meter, check for voltage between relay harness connector terminal 10 and ground.
Voltage
System voltage.
6. Disconnect the negative battery cable and the ECU connector.
7. Using an ohm meter check for continuity between relay harness connector 8 and ECU harness connector 108.
Continuity
Should exist.
8. Using an ohm meter check for continuity between relay harness connector 4 and ECU harness connectors 25 and 12.
Continuity
Should exist.
9. Using an ohm meter check for continuity between relay harness connector 4 and ground.
Continuity
Should not exist.
9. Using an ohm meter check for continuity between relay harness connector 5 and ground.
Continuity
