2010 Cadillac Truck SRX FWD V6-3.0L Page 1805
Circuit/System Description
Line pressure control solenoid (SLT) is part of the front valve body. SLT regulates the transmission fluid line pressure in accordance with the value
decided in the transmission control module (TCM) based on throttle opening signal and engine torque. Through this, it controls operating hydraulic
pressure to the clutch and brakes for smooth shifting. The TCM varies the current to the normally SLT from 0.1 A for maximum line pressure, to
1.1 A for minimum line pressure. As a fail-safe function, if SLT abnormality occurs, the TCM will disable the current. In that case the line pressure
is maximized.
Conditions for Running the DTC
P0748
* 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.
* Driving in D range.
* TCM communication is normal.
* DTCs P0962 and P0963 are not set.
P0961
* 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.
* Driving in D range.
* TCM communication is normal.
* The Automatic Transmission Fluid Temperature is more than 20掳C (68掳F)
* SLT current is more than 0.85 A.
* SLT current is not changed.
P0962
* 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.
* Driving in D range.
* TCM communication is normal.
* DTC P0963 is not set.
P0963
* 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.
* Driving in D range.
* TCM communication is normal.
* DTC P0962 is not set.
Conditions for Setting the DTC
P0748
Deviation between commanded current and feedback current.
P0961
The TCM detects the error current more than 80 mA for 2.75 ms.
P0962
The TCM detects at least 5 times less than 23 mA current consumption of the SLT control circuit for 100 ms.
No comments:
Post a Comment