Monitoring Procedure
WARNING: This page is about a different car, the 2007 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.
Input signal of MAF (P0102, P0103), MAP (P0107, P0108), IAT (P0112, P0113), ECT (P0117, P0118), TP (P0122, P0123, P0222, P0223), knock sensor (P0327, P0328), APP (P2122, P2123, P2127, P2128) and barometric pressure sensor (P2228, P2229) are checked for open, short of circuit by monitoring input voltage.