Engine Oil Level Warning System; Meter Illumination Control System; Inspect Engine Oil Level Sensor - Toyota LAND CRUISER Service Manual Supplement

BODY ELECTRICAL SYSTEM - COMBINATION METER

ENGINE OIL LEVEL WARNING SYSTEM

INSPECT WARNING LIGHT
(a)
(b)
(c)

INSPECT ENGINE OIL LEVEL SENSOR

(a)
(b)
(c)
(d)

METER ILLUMINATION CONTROL SYSTEM

INSPECT LIGHT CONTROL RHEOSTAT
(a)
(b)
(c)
(d)
Disconnect the connector from the engine oil level sen-
sor.
Ground terminal 2 on the wire harness side connector.
Turn the ignition switch ON, check that the warning light
lights up.
If the warning light does not light up, test the bulb.
Check that there is continuity between terminals with the
switch each position.
Heat the switch to above 60°C (140°F) in an oil bath.
Check that there is continuity between terminals with the
switch ON (float up).
Check that there is no continuity between terminals with
the switch OFF (float down).
If operation is not as specified, replace the sensor.
Connect terminals 1 and 3 through a 3.4 watts test bulb.
Connect the positive ( + ) lead from the battery to ter-
minal 1 and the negative ( —) lead to terminal 2.
Turn the rheostat knob to fully counterclockwise, check
that the test bulb goes out.
Gradually turn the rheostat knob to clockwise, check that
the test bulb brightness changes from dark to bright.
If operation is not as specified, replace the rheostat.
BE-19