Quest Minivan SE V6-3.3L (VG33E) (1999)
SWITCH POSITIONS
Switches are shown in wiring diagrams as if the vehicle is in the "normal" condition.
A vehicle is in the "normal" condition when:
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ignition switch is "OFF",
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doors, hood and trunk lid/back door are closed,
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pedals are not depressed , and
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parking brakes is released.
DETECTABLE LINES AND NON-DETECTABLE LINES
In some wiring diagrams, two kinds of lines, representing wires with different weight are used.
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A line with regular weight (wider line) represents a "detectable line for DTC (Diagnostic Trouble Code)". A "detectable line for DTC" is a circuit
in which (ECM) (Engine control module) can detect malfunctions with the on-board diagnostic system.
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A line with less weight (thinner line) represents a "non-detectable line for DTC". A "non-detectable line for DTC" is a circuit in which ECM
cannot detect malfunctions with the on-board diagnostic system.