Water Temperature - Mercury MerCruiser MCM 454 Mag MPI Service Manual

INSTRUMENTATION

Water Temperature

DUAL STATION SENDER IDENTIFICATION
Sender will have 362-BC stamped on hex.
REMOVAL
1. Drain coolant from closed cooling system into a suitable container as outlined in
SECTION 6B.
2. Remove TAN wire from temperature sender.
NOTE: Hoses are shown removed for clarity.
3. Remove temperature sender.
TESTING
1. Connect an ohmmeter between temperature sender terminal (+) and hex (case) for
ground (–) as shown.
Index
Page 4D-10
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a
a - Water Temperature Sender
b - Thermostat Housing
a - Ohmmeter Leads
b - Water Temperature Sender
SERVICE MANUAL NUMBER 23
b
a
b
90-861326--1 MARCH 1999
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