SEAT Workshop Service and Repair Manuals

Main pressure: measure

Special tools and workshop equipment required

t	Torque spanners -SAT 8010-

t	Drip tray -V.A.G 1306-

t	Pressure tester -V.A.G 1702-

t	Vehicle Diagnosis, Testing and Information System -VAS 5051-

t	Diagnosis cable -VAS 5051/1- or -VAS 5051/3-

The main pressure must be checked, where possible, on a test bench with rollers. –  Remove left-hand shelf.

–  With the ignition switched off, fit the connector from diagnosis cable -VAS 5051/1- or -VAS 5051/3- to the diagnosis connection: → VAS 5051; Vehicle self-diagnosis

–  Remove bolt -arrow- from the drilled hole for the main pressure. Always renew the bolt. –  Connect the -V.A.G 1702- tester and tighten the knurled screw. –  Start the engine. –  Bleed the -V.A.G 1702- by loosening the knurled screw and then tightening again after bleeding. –  Raise ATF temperature to 60 °C. Theoretical values of the main pressure at idling revs

	Pos. of the selector lever
	D	R
bar pressure	3,4 ... 3,8	5 ... 6

If there are differences in the prescribed values, this may be due to:

Possible causes	Measures to take
Idle speed, excessive	Shut off engine
ATF pump, faulty	Check the ATF pump and change where necessary
Slides stuck in the box	Change slide box

–  Shut off engine.

–  Check the fuse and unplug the connector -arrows-. –  Start the engine. Theoretical values of the pressure with an engine speed of approx. 2000 1/min

	Pos. of the selector lever and measuring conditions
	D	R
bar pressure	12,4 ... 13,2	23,0 ... 24,0

If there are differences in the prescribed values, this may be due to

Possible causes	Measures to take
ATF pump, faulty	Check the ATF pump and change where necessary
Slides stuck in the box	Change slide box

After measuring: –  Remove pressure tester -V.A.G 1702-. –  Fit a new bolt in the drilled hole for the main pressure and tighten. Tightening torque: 15 Nm –  Attach the connector for the solenoid valves. –  Interrogate fault memory and erase it.