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ELECTRICAL
ELECTRICAL COMPONENTS
CHECKING THE SWITCH CONTINUITY
Check each switch for continuity with the tester. If the con-
tinuity reading is incorrect, check the wiring connections
and if necessary, replace the switch.
• Before checking for continuity, set the digital circuit tester
to the “” range.
• When checking for continuity, switch back and forth
between the switch positions a few times.
CHECKING THE OIL PRESSURE SWITCH
1.
Drain:
• Engine oil
2.
Disconnect:
• Oil pressure switch lead
3.
Connect:
• Digital circuit tester
(between the engine ground and oil pressure switch
terminal)
4.
Check:
• Oil pressure switch continuity
No continuity Replace the oil pressure switch.
CHECKING THE TCI UNIT RESISTANCE
The following procedure applies to all of the TCI units.
1.
Check:
• Coil resistance
Out of specification Replace.
Never insert the tester probes into the coupler termi-
nal slots. Always insert the probes from the opposite
end of the coupler, taking care not to loosen or dam-
age the leads.
Model 88 Multimeter with tachometer:
YU-A1927
Model 88 Multimeter with tachometer:
YU-A1927