P0722

DTC P0722
Stall speed monitoring.

Possible causes by suggested order of priority:
^ Connectors C243,EAT C193.
^ Open circuit shaft speed sensorC193/14 (B) to C193/42 (R).
^ Open circuit C243/E (K) to C193/42 (R).
^ Open circuit C243/F (B) to C193/14 (B).
^ Shaft speed electrical interference.
^ Shaft speed sensor fault.
^ Torque converter mechanical fault.

Connectors C243,EAT C193.
CONNECTOR
^ Check for connector not correctly latched, backed out pins, damaged pins, corroded pins.

Open Circuit Shaft Speed SensorC193/14 (B) To C193/42 (R).
OPEN_CIRCUIT
^ Check resistance > 1M Ohm

Open Circuit C243/E (K) To C193/42 (R).
OPEN_CIRCUIT
^ Check resistance > 1M Ohm

Open Circuit C243/F (B) To C193/14 (B).
OPEN_CIRCUIT
^ Check resistance > 1M Ohm

Shaft Speed Electrical Interference.
^ Use Live Data reading to display the output shaft speed as measured by the transmission ECU.
CHECK THE FOLLOWING:
^ With the engine running and the position switch in 'P' the shaft speed should measure 0 RPM.
^ If the reading is not 0 RPM then there may be a problem with electrical interference.
^ Check the connections to the screen around the output shaft sensor wiring.
POSSIBLE FAULTS
^ Faulty output shaft sensor wiring.
^ Faulty output shaft sensor.

Shaft Speed Sensor Fault.
^ Use Live Data reading to display the output shaft speed as measured by the transmission ECU.
CHECK THE FOLLOWING:
^ Monitor the road speed (from the vehicle speedometer) and the output shaft speed while driving on the road or on a rolling road.
^ The two readings should maintain the same ratio. If one reading doubles so should the other reading.
^ If the readings do not maintain a fixed ratio the output shaft sensor may be faulty.
POSSIBLE FAULTS
^ Faulty output shaft sensor

Torque Converter Mechanical Fault.
^ Use Live Data reading to display the output shaft speed as measured by the transmission ECU.
CHECK THE FOLLOWING:
^ Monitor the road speed (from the vehicle speedometer) and the output shaft speed while driving on the road or on a rolling road.
^ The two readings should maintain the same ratio. If one reading doubles so should the other reading.
^ If the readings maintain a fixed ratio the torque converter may be faulty.
POSSIBLE FAULTS
^ Transmission torque converter mechanical fault.