2010 Cadillac Truck SRX FWD V6-3.0L Page 1249
Circuit/System Description
The manual shift detent lever with shaft position switch assembly, or internal mode switch (IMS) assembly is a sliding contact switch attached to
the manual shift detent lever within the transmission. The 4 inputs to the transmission control module (TCM) from the switch indicate which
position is selected by the transmission manual shaft. The input voltage at the TCM is high when the switch is open and low when the switch is
closed to ground. The state of each input is displayed on the scan tool as IMS A/B/C/P. The IMS input parameters represented are transmission
range signal A, Signal B, signal C, and signal P.
Conditions for Running the DTC
P182E
* DTC P0101, P0102, P0103, P0106, P0107, P0108, P0171, P0172, P0174, P0175, P0201, P0202, P0203, P0204, P0205, P0206, P0207,
P0208, P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308, P0401, P042E, P0722, or P0723 is not set.
* The engine speed is 400 RPM or greater for 5 seconds.
* The ignition voltage is 8.6 volts or greater.
* The engine torque signal is valid.
P1915
* DTC P0722 or P0723 is not set.
* The transmission output shaft speed is 90 RPM or less.
* The ignition voltage is 6.0 volts or greater.
Conditions for Setting the DTC
P182E
The IMS does not indicate a valid Park, Reverse, Neutral or Drive Range gear position for 7 seconds.
P1915
The IMS does not indicate Park or Neutral during the following sequence:
* The engine speed is less than 50 RPM for more than 0.25 second.
* The engine speed is 50-480 RPM for more than 0.07 second.
* The engine speed is greater than 525 RPM for more than 3.25 seconds.
Action Taken When the DTC Sets
* DTCs P182E and P1915 are Type A DTCs.
* The TCM commands maximum line pressure.
* The TCM turns OFF all solenoids.
* The TCM freezes transmission adaptive functions.
* The TCM limits the transmission to reverse and 5th gear.
* The TCM turns OFF the high side driver.
* The TCM inhibits Tap Up/Down function.
* The TCM inhibits manual shifting of forward gears.
Conditions for Clearing the DTC
DTCs P182E and P1915 are Type A DTCs.
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Diagrams)
Connector End View Reference
* Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)
* Inline Harness Connector End Views (See: Diagrams/Connector Views/Multiple Junction Connector/Connector End Views By Number)
