Sunday, November 3, 2019

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1989

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1989

Repair/Wiring Harness Replacement) for automatic transmission control wiring harness extension harness assembly replacement.

6L50/6L80/6L90 - Automatic Transmission

DTC P182E or P1915

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions)provides an overview of each diagnostic category.

DTC Descriptors

DTC P182E

- Internal Mode Switch - Invalid Range

DTC P1915

- Internal Mode Switch Does Not Indicate Park/Neutral (P/N) During Start

Diagnostic Fault Information

Typical Scan Tool Data

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

control valve body 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. The IMS input parameters represented are transmission range signal A, Signal

B, signal C, and signal P.

Conditions for Running the DTC

P182E

* The engine speed is greater than 400 RPM for 5 seconds.

* The ignition voltage is greater than 8.6 volts.

* Engine torque signal is valid.

* DTCs P0101, P0102, P0103, P0106, P0107, P0108, P0171, P0171, or P0172 are not set.

P1915

* No OSS DTCs P0722 or P0723 and are not Fault Active or Test Fail this Key ON.

* The transmission output shaft speed is less than 90 RPM or less.

* The ignition voltage is between 6.0 volts and 18.0 volts.

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