Quest Minivan XE V6-2960cc 3.0L SOHC MFI (VG30E) (1998)
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DETECTABLE LINES AND NON-DETECTABLE LINES
In some wiring diagrams, two kinds of lines with different thicknesses are used to representing wires.
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A line with regular thickness (wider line) represents a "detectable line for DTC (Diagnostic Trouble Code)". A "detectable line for DTC" is a
circuit in which (ECM) (ECCS control module) can detect malfunctions with the on-board diagnostic system.
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A line with less thickness (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.
MULTIPLE SWITCH
The continuity of multiple switch is described in two ways as shown below.
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The switch chart is used in schematic diagrams.
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The switch diagram is used in wiring diagrams.
How to Perform Efficient Diagnosis For an Electrical Incident
