2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1947

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1947

DTC P2714

- Clutch Pressure Control (PC) Solenoid 4 - Stuck Off

DTC P2715

- Clutch Pressure Control (PC) Solenoid 4 - Stuck On

Circuit/System Description

The clutch pressure control (PC) solenoid 4 is part of the control solenoid valve assembly, which has no serviceable components. The PC solenoid

4 regulates transmission fluid pressure to the 2-6 clutch regulator valve which controls pressure to the 2-6 clutch. The transmission control module

(TCM) calculates gear ratio based on the RPM signals from the input speed sensor (ISS) and the output speed sensor (OSS). The TCM compares

the expected transmission gear ratio to the calculated gear ratio for each commanded gear.

Conditions for Running the DTC

P2714

* No DTCs P0101, P0102, P0103, P0106, P0107, P0108, P0171, P0172, P0174, P0175, P0201, P0202, P0203, P0204, P0205, P0206, P0207,

P0208, P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308, P0401, P042E, P0716, P0717, P0722, P0723, or P182E.

* The ignition voltage is 8.6 volts or greater.

* The output speed is 16 RPM or greater, or the throttle position is 0.4 percent or greater.

* The throttle position signal is valid.

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

* The transmission fluid temperature is 0掳C (32掳F) or greater.

* 2-6 clutch is commanded ON.

* The high side driver is enabled.

P2715

* No DTCs P0101, P0102, P0103, P0106, P0107, P0108, P0171, P0172, P0174, P0175, P0201, P0202, P0203, P0204, P0205, P0206, P0207,

P0208, P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308, P0401, P042E, P0716, P0717, P0722, P0723, or P182E.

* The ignition voltage is 8.6 volts or greater.

* The high side driver is enabled.

* The transmission fluid temperature is 0掳C (32掳F) or greater.

* The transmission output shaft speed is 350 RPM or greater.

* The transmission input shaft speed is 200 RPM or greater.

* The 2-6 clutch is commanded OFF.

Conditions for Setting the DTC

P2714

The TCM detects an incorrect on-coming clutch gear ratio, or flare, when the 2-6 clutch is commanded ON and the transmission input shaft speed is

200 RPM or greater from the anticipated input shaft speed for 2 seconds, a total of 3 times in second gear, or a total of 3 times in sixth gear.

P2715

The TCM detects an incorrect off-going clutch gear ratio, or tie-up, when the 2-6 clutch is commanded OFF and the transmission input shaft speed

is 40 RPM or less from the anticipated input shaft speed for 1.2 seconds, a total of 3 times from second gear or a total of 3 times from sixth gear.

Action Taken When the DTC Sets

P2714

* DTC P2714 is a Type A DTC.

* The TCM commands maximum line pressure.

* The TCM inhibits Tap Up/Down function.

* The TCM inhibits manual shifting of forward gears.

* The TCM freezes transmission adaptive functions.

* The TCM limits the transmission to first, third, or reverse operation.

P2715

* DTC P2715 is a Type A DTC.

* The TCM commands maximum line pressure.

* The TCM inhibits Tap Up/Down function.

* The TCM inhibits manual shifting of forward gears.

* The TCM freezes transmission adaptive functions.

* The TCM limits the transmission to second gear operation.

Conditions for Clearing the DIC/DTC

DTCs P2714 and P2715 are Type A DTCs.