Checking Hydraulic Unit ABS Operation With Brake Tester

In the case of non-Saab 9-2X 2.0T Aero AT model, install a spare fuse with the FWD connector in the main fuse box to simulate FWD model.

1. Main fuse box
2. FWD connector

Prepare for operating the ABS sequence control.

Set the front wheels or rear wheels on the brake tester and set the select lever's position at "N" range.

1. Brake tester
   Fig 3: Setting Rear Wheels On Brake Tester

   Courtesy of SAAB-SCANIA OF AMERICA, INC.

Operate the brake tester.

Perform the ABS sequence control.

Hydraulic unit begins to work; and check the following working sequence.

The FL side performs decompression, holding and compression in sequence, and subsequently the FR side repeats the cycle.

The RR side performs decompression, holding and compression in sequence, and subsequently the RL side repeats the cycle.

Read values indicated on the brake tester and check if the fluctuation of values, while decompressed and compressed, meet the standard values.

	Front wheel	Rear wheel
Initial value	1,000 N (100 kgf, 221 lb)	1,000 N (100 kgf, 221 lb)
Decompressed	500 N (50 kgf, 110 lb) or less	500 N (50 kgf, 110 lb) or less
Compressed	1,000 N (100 kgf, 221 lb) or more	1,000 N (100 kgf, 221 lb) or more

After checking, also check if any irregular brake pedal tightness is felt.