Trooper LS V6-3.5L (1998)
Transmission Mode Switch: Description and Operation
IMPORTANT: The vehicle should not be driven with the transmission range switch disconnected; idle quality will be affected.
The four inputs from the transmission range switch indicate to the PCM which position is selected by the transmission selector lever. This information is
used for ignition timing, EVAP canister purge, EGR and IAC valve operation.
For more information on the transmission on the transmission range switch, refer to 4L30-E Automatic Transmission.
