2010 Cadillac Truck SRX FWD V6-3.0L Page 1828
Circuit/System Description
The shift control solenoid (SLC2) is installed on the front valve body. The solenoid linearly control hydraulic pressure in response to signals output
from the transmission control module TCM. Through this, the SLC2 controls operating hydraulic pressure to the clutch 2 for smooth shifting.
According to each shift control solenoid assembly, the transmission shifts from 1st gear into 6th gear and vice versa. As a fail-safe function, if any
shift control solenoid assembly abnormality occurs, the TCM will disable the current to the solenoids.
Conditions for Running the DTC
P0798
* The ignition voltage is between 10.2-15.5 V.
* The engine speed is greater than 400 RPM for 2 s.
* The transmission is not in emergency mode.
* Driving in D range.
* TCM communication is normal.
* DTCs P0970 and P0971 are not set.
P0969
* The ignition voltage is between 10.2-15.5 V.
* The engine speed is greater than 400 RPM for 2 s.
* The transmission is not in emergency mode.
* Driving in D range.
* TCM communication is normal.
* The automatic transmission fluid temperature is more than 20掳C (68掳F)
* SLC2 current is more than 0.85 A.
* SLC2 current is not changed.
P0970
* The ignition voltage is between 10.2-15.5 V.
* The engine speed is greater than 400 RPM for 2 s.
* The transmission is not in emergency mode.
* Driving in D range.
* TCM communication is normal.
* DTC P0971 is not set.
P0971
* The ignition voltage is between 10.2-15.5 V.
* The engine speed is greater than 400 RPM for 2 s.
* The transmission is not in emergency mode.
* Driving in D range.
* TCM communication is normal.
* DTC P0970 is not set.
Conditions for Setting the DTC
P0798
Deviation between commanded current and feedback current.
P0969
The TCM detects the error current more than 80 mA for 2.75 ms.
P0970
The TCM detects at least 5 times less than 23 mA current consumption of the SLC2 control circuit for 100 ms.
P0971
The TCM detects at least 5 times more than 1.333 A current consumption of the SLC2 control circuit for 100 ms.
Action Taken When the DTC Sets
P0798, P0969
* DTC P0969 is a Type B DTC.
* The TCM turns OFF all solenoids.
* The TCM allows the vehicle after a stop to operate only in the second gear and "R" range.
