Service manual

INSTRUMENTATION SERVICE MANUAL NUMBER 26
Page 4D-18 90-861329--1 MARCH 1999
Oil Pressure Switch
Refer to SECTION 4E for switch locations. Switch is normally closed.
TESTING
1. Remove wire from sender terminal.
2. Connect continuity meter between sender terminal and sender hex. (Sender shown
removed for clarity.)
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3. With engine not running, meter should indicate full continuity.
4. Start engine. With engine running and engine oil pressure above 6 psi (41 kPa), meter
should indicate NO continuity.
SWITCH IDENTIFICATION
Switch has 364-AF stamped on hex of sender.
Water Temperature Switch
TESTING
1. Connect an ohmmeter between water temperature switch terminal (+) and hex (case)
for ground (–) as shown.
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b
a
a-Ohmmeter Leads
b-Water Temperature Switch
2. Switch should read no continuity.
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