2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1658
Inspection/Programming and Relearning) following all transmission related repairs.
* Before replacing the TCM, perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection (See:
Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and Inspection/Component Tests and General
Diagnostics/6T70/6T75 - Automatic Transmission/Control Solenoid Valve and Transmission Control Module Assembly Inspection)
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Control Module References (See: Testing and Inspection/Programming and Relearning) for body control module (BCM) or control solenoid
valve assembly replacement, setup and programming
* Transmission Control Replacement (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Shifter A/T/Service and
Repair/6T70/6T75 - Automatic Transmission/Transmission Control Replacement)
P0817
DTC P0817
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 Descriptor
DTC P0817
- Brake Transmission Shift Interlock Solenoid Actuator
Diagnostic Fault Information
Circuit/System Description
The transmission range switch is an integral part of the transmission control module (TCM). As the gear range selector lever is moved, the state of
the starter inhibit circuit may change, causing the circuit to open or close. An open circuit indicates a drive range and a low voltage signal, 0 V, at
the body control module (BCM). A closed circuit indicates PARK or NEUTRAL and a high voltage, 12 V, signal at the BCM. The BCM uses the
starter inhibit circuit status from the TCM in order to enable starter operation.
Conditions for Running the DTC
P0817
* The ignition voltage is 6.0-16.0 V.
* The transmission is not in emergency mode.
Conditions for Setting the DTC
P0817
* Start lock is output as "On" and start lock monitor signal indicates "Off" for more than 100 ms.
* After consecutive 2 times of above detection.
Action Taken When the DTC Sets
P0817
* DTCs P0817 is Type D DTC.
* No engine start possible.
Conditions for Clearing the DTC
P0817
* DTC P0817 is Type D DTC.
* Start lock is output as "On" and start lock monitor signal indicates "On" and start lock is output as "Off" and start lock monitor signal
indicates "Off" for more than 1 s.
