QX4 2WD V6-3.5L (VQ35DE) (2003)
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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 brake 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 its 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 its malfunctions with the on board diagnostic system.