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Oil Pressure Gauge Test (Land Cruiser & Tundra With Tachometer)

  1. Disconnect oil pressure sender connector (on oil filter housing). Turn ignition switch to ON position. Oil gauge should indicate LOW. Turn ignition switch to OFF position. Connect a 12-volt, 3.4-watt test light between oil sending unit harness connector terminal and ground.
  2. Turn ignition switch to ON position. Test light should be on and oil pressure gauge should slowly move to HIGH. If gauge functions as specified, perform OIL PRESSURE SENDER OPERATIONAL TEST . If gauge does not function as specified, perform OIL PRESSURE GAUGE RESISTANCE TEST .
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