2000 Range Rover gearbox fault

Tiny
YVETTE382
  • MEMBER
  • 2000 ROVER RANGE ROVER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 95,000 MILES
Code p0722 from auto data
Vehicle slips in 1 or 2nd gear
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Saturday, November 7th, 2009 AT 4:11 PM

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Tiny
DAVE H
  • EXPERT
DTC P0722: STALL SPEED MONITORING
Bosch GS8.87 EAT DTC P0722
Description
DTC P0722

Stall Speed Monitoring
Possible Causes
Connectors C243, EAT C193. See 1 under CHECK.
Open circuit shaft speed sensor C193/14 (B) to C193/42 (R). See 2 under CHECK.
Open circuit C243/E (K) to C193/42 (R). See 3 under CHECK.
Open circuit C243/F (B) to C193/14 (B). See 4 under CHECK.
Shaft speed electrical interference. See 5 under CHECK.
Shaft speed sensor fault. See 6 under CHECK.
Torque converter mechanical fault. See 7 under CHECK.
Check
Connectors C243, EAT C193

CONNECTOR

Check for connector not correctly latched, backed out pins, damaged pins, corroded pins.
Open Circuit Shaft Speed Sensor C193/14 (B) To C193/42 (R)

OPEN_CIRCUIT

Check resistance less than 1 M/ohm.
Open Circuit C243/E (K) To C193/42 (R)

OPEN_CIRCUIT

Check resistance less than 1 M/ohm.
Open Circuit C243/F (B) To C193/14 (B)

OPEN_CIRCUIT

Check resistance less than 1 M/ohm.
Shaft Speed Electrical Interference

CHECK THE FOLLOWING

NOTE:Use Live Data reading to display the output shaft speed as measured by the transmission ECU.

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

CHECK THE FOLLOWING

NOTE:Use Live Data reading to display the output shaft speed as measured by the transmission ECU.

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

CHECK THE FOLLOWING

NOTE:Use Live Data reading to display the output shaft speed as measured by the transmission ECU.

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.
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Friday, November 27th, 2009 AT 9:17 AM

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