Sunday, November 10, 2019

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 2695

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 2695

- Pressure Control (PC) Solenoid 5 System Performance

DTC P2729

- Pressure Control (PC) Solenoid 5 Control Circuit Low Voltage

DTC P2730

- Pressure Control (PC) Solenoid 5 Control Circuit High Voltage

Diagnostic Fault Information

Circuit/System Description

The clutch pressure control solenoid 5 is part of the control solenoid valve assembly and is not serviced separately. The transmission control

module supplies 12 volts to the PC solenoid 5 through the high side driver 1 circuit. The transmission control module controls the clutch pressure

control solenoid 5 through the clutch pressure control solenoid 5 control circuit. The normally low clutch pressure control solenoid 5 flows fluid to

the actuator feed limit valve when commanded ON and exhausts fluid when commanded OFF. The clutch pressure control solenoid 5 regulates the

transmission fluid pressure from the auxiliary transmission fluid pump in order to maintain transmission fluid pressure during electric only and

auto-stop modes.

Conditions for Running the DTC

* The engine run time is greater than 5 seconds.

* The vehicle speed is less than 200 km/h (124 mph) for 5 seconds.

* The system voltage is 11-18 V.

Conditions for Setting the DTC

P2728

The transmission control module detects an internal electrical performance malfunction of the clutch pressure control solenoid 5 control circuit

when the actual pressure does not equal the commanded pressure for 5 seconds.

P2729

The transmission control module detects an internal low voltage electrical malfunction of the clutch pressure control solenoid 5 control circuit for

500 milliseconds.

P2730

The transmission control module detects an internal high voltage electrical malfunction of the clutch pressure control solenoid 5 control circuit for

500 milliseconds

Action Taken When the DTC Sets

* DTC P2728 is a Type B DTC.

* DTCs P2729 and P2730 are Type A DTCs.

* The transmission control module defaults the transmission to a limited shift pattern utilizing 2 forward gears and reverse based on the default

detected.

* The transmission control module commands maximum line pressure.

* The transmission control module freezes transmission adaptive functions.

Conditions for Clearing the DTC

* DTC P2728 is a Type B DTC.

* DTCs P2729 and P2730 are Type A DTCs.

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