2010 Cadillac Truck SRX FWD V6-3.0L Page 1844

2010 Cadillac Truck SRX FWD V6-3.0L Page 1844

DTC P0973 or P0974

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 P0973

- Shift Solenoid Valve 2 Control Circuit Low Voltage

DTC P0974

- Shift Solenoid Valve 2 Control Circuit High Voltage

Diagnostic Fault Information

Typical Scan Tool Data

Circuit/System Description

Shift solenoid valve 2 is installed on the middle valve body. The solenoid turn ON and OFF in response to signals output from the TCM. According

to the ON or OFF status of shift solenoid valve 1 or shift solenoid valve 2, the 1st gear engine brake operates or the gear shifts into change. As a

fail-safe function, if any shift solenoid abnormality occurs, the transmission control module (TCM) will disable the current to the solenoids.

Conditions for Running the DTC

P0973

* The ignition voltage is 10.2-15.5 V.

* The engine speed is greater than 400 RPM for 2 s.

* The transmission is not in emergency mode.

* 10 ms after solenoid output changed.

P0974

* The ignition voltage is 10.2-15.5 V.

* The engine speed is greater than 400 RPM for 2 s.

* The transmission is not in emergency mode.

* 10 ms after solenoid output changed.

Conditions for Setting the DTC

P0973

The TCM detects an ON signal (12 V) of the 2 circuit when the 2 is commanded OFF (0 V) for 100 ms continuously after 5 times.

P0974

The TCM detects an OFF signal (0 V) of the 2 circuit when the 2 is commanded ON (12 V) for 100 ms continuously after 5 times.

Action Taken When the DTC Sets

* DTCs P0973 and P0974 are Type A DTCs.

* The TCM freezes transmission adaptive functions.