Circuit Test (Eclipse, Montero & 3000GT)
- Disconnect oil pressure gauge wiring connector from sending unit inside engine compartment. Connect a test light between harness connector terminal and ground. Turn ignition on, but DO NOT start engine.
- If test light comes on and gauge needle moves, go to GAUGE RESISTANCE TEST (ECLIPSE, MONTERO & 3000GT) . If test light does not come on and gauge needle does not move, repair wiring to sending unit.