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Ignition Switch Test

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2001 Saturn LW300, 2001 Saturn LW200, 2001 Saturn L300, 2001 Saturn L200, and 2001 Saturn L100. However, it is still accessible from the selected car via links, so may be relevant.
WARNING: Vehicles are equipped with Supplemental Inflatable Restraint (SIR) system. Before attempting ANY repairs involving steering column, instrument panel or related components, see SERVICE PRECAUTIONS and DISABLING & ACTIVATING AIR BAG SYSTEM in appropriate AIR BAG RESTRAINT SYSTEMS article in ACCESSORIES & EQUIPMENT.

Disconnect ignition switch connectors. Check for continuity between specified terminals at appropriate ignition switch positions. On "L" series, see IGNITION SWITCH CONTINUITY ("L" SERIES)  table. See Fig 1 and Fig 2 . On "S" series, see IGNITION SWITCH CONTINUITY ("S" SERIES)  table. See Fig 3 . On all models, if continuity does not exist between specified terminals, replace ignition switch.

IGNITION SWITCH CONTINUITY ("L" SERIES)

Ignition Switch Position Continuity Between Connector/Terminal
Key In Ignition Switch Black "F" & Natural "F"
ACCESSORY Black "A" & "B", Black "C" & Natural "D"
RUN Black "A" & "B", Black "B" & Natural "A", Black "C" & Natural "D", Black "C" & Natural "B", Black "A" & Natural "A", Natural "B" & "D"
START Black "A" & Natural "A", Black "C" & Natural "D", Black "C" & Natural "C", Black "D" & Natural "E", Natural "C" & "D"
Fig 1: Identifying Ignition Switch Black Connector Terminals ("L" Series)
G00012197Courtesy of GENERAL MOTORS CORP.
Fig 2: Identifying Ignition Switch Natural Connector Terminals ("L" Series)
G00012198Courtesy of GENERAL MOTORS CORP.
IGNITION SWITCH CONTINUITY ("S" SERIES)

Ignition Switch Position Continuity Between Terminal
Key In Ignition Switch "D" & "E"
ACCESSORY "D" & "E", "F" & "H"
RUN "A" & "B", "D" & "E", "F" & "H"
START "A" & "C", "D" & "E", "F" & "H"
Fig 3: Identifying Ignition Switch Black Connector Terminals ("S" Series)
G00012199Courtesy of GENERAL MOTORS CORP.