Inspection Of Electric Cooling; Inspect Temperature Switch; Inspect Fan Main Relay - Toyota MR2 1988 Repair Manual

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C0-14
COOLING SYSTEM - Electric Cooling Fan (Radiator)
No continuity
Continuity
8f0993
INSPECTION OF ELECTRIC COOLING
FAN
1.
INSPECT TEMPERATURE SWITCH
NOTE:
The switch is located at the radiator right side.
(a)
Using an ohmmeter, check that there is no continuity
when the coolant is above 93°C (199°F).
(b)
Check that there is continuity when the coolant tem-
perature is below 83°C (181 °F).
2.
INSPECT FAN MAIN RELAY
NOTE:
The relay is located in the No. 5 junction block of
the front luggage compartment.
Inspect Relay Continuity
(a)
Using an ohmmeter, check that there is continuity
between terminals 1 and 2.
(b)
Check that there is continuity between terminals 3
and 5.
(c)
Check that there is no continuity between terminals 3
and 4.
If continuity is not as specified, replace the relay.
Inspect Relay Operation
(a)
Apply battery voltage across terminals 1 and 2.
(b)
Using an ohmmeter, check that there is continuity
between terminals 3 and 4.
(c)
Check that there is no continuity between terminals 3
and 5.
If operation is not as described, replace the relay.

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