Ignition Switch Test

2000 Saturn SC2 Automatic, MP6SECTION 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.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.