3000GT VR-4 AWD V6-2972cc 3.0L DOHC MFI Twin Turbo (1998)
-
Connector: Disconnected
-
Ignition switch ON
Voltage (V): Battery positive voltage
OK: GO TO STEP 2
NG: Repair the harness. (A1, B1, C1, D1 - MFI relay)
Check for an open-circuit, or a short-circuit to ground, between the engine control module and the heated oxygen sensor
-
Heated oxygen sensor connector: Disconnected
-
Engine control module connector: Disconnected
OK: GO TO STEP 3
NG: Repair the harness. (A4-74) (B4-72) (C4-71) (D4-73)
Check for an open-circuit, or a short-circuit to ground, between the engine control module and the heated oxygen sensor.
-
Heated oxygen sensor connector: Disconnected
-
Engine control module connector: Disconnected
OK: GO TO STEP 4
NG: Repair the harness. (A3-27) (B3-4) (C3-3) (D3-26)
Check for continuity of the ground circuit.
-
Connector: Disconnected
OK: STOP
NG: Repair the harness. (A2, B2, C2, D2-49)
HEATED OXYGEN SENSOR CHECK <Heated Oxygen Sensor (front)>
(1) Disconnect the heated oxygen sensor connector and connect the special tool, Test Harness, to the heated oxygen sensor connector.
