Park/Neutral Position Switch (1.8L - With A/T)
A malfunction in PNP switch circuit can set DTC P1780. For test procedure with DTC set, see appropriate SELF-DIAGNOSTICS article. Use the following procedure to diagnose PNP switch.
Disconnect PNP switch connector (located on transmission next to shift linkage). Using DVOM, check for continuity between PNP switch terminals No. 2 (Black/White wire) and No. 3 (Black wire) with gearshift lever in Park or Neutral. Continuity should exist. If continuity does not exist in specified gear ranges, replace PNP switch.