Section04ENGINEMANAGEMENT(15034-TEC)
Subsection 03 (COMPONENT INSPECTION, REPLACEMENT AND ADJUSTMENT)
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MeasureresistancebetweenpinAandC.Inthe
UP position, it should be approximately 35
.
Turn switch upside down. It should now read ap-
proximately 10 k . Otherwise, replace switch.
NOTE: While turning switch upside down, ensure
that switch resistance does not change before it
reaches 120° ±10 from the vertical axis. From the
upside down position, switch resistance should
not change before 60° ±10 from the vertical axis.
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If switch tests good, make sure DESS key is on,
and check if there is battery voltage between pins
AandBofswitchharnessconnector.
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MEASURE WHEN DESS KEY IS ON
If battery voltage is not read, check TOPS switch
fuse condition. If good, check continuity of
circuits 2-2 and 2-15 going to MPEM. If conti-
nuity does not test good, repair/replace wiring/
connector. If it tests good, try a new MPEM.
If battery voltage is read, check continuity be-
tween pin C and B-9 at ECM. If continuity does
not test good, repair/replace wiring/connector. If
ittestsgood,tryanewECM.
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