SEAT Workshop Service and Repair Manuals > Leon Mk1 > Power unit | Motronic injection and ignition system (1.4 l engine, 2 valves) | Mixture preparation system, electronic inj.,Gas

Adjust the brake light switch

Test condition

l	Brake pedal at rest position.

Work sequence

–	Place the brake light switch far enough towards the fitting hole so that between the switch housing and the brake pedal there is a space of 2.5 mm.

–	Immobilise the brake light switch turning if 45^o to the right.

–	Plug in the 2-pin connector of the brake light switch -arrow-.

–	Connect the -V.A.G 1551- (-V.A.G 1552-). Switch on the ignition and enter “address code” 01 to select the engine control unit. (Fault reader: Connecting and selecting the engine control unit → Chapter.)

The display reads:

–	Press 0 and 8 for the function “Read measurement value block” and press Q to confirm the entry.

Rapid data transmission             HELP

Select function XX

The display reads:

–	Press 0, 6 and 6 for “Display group number 66” and press Q to confirm the entry.

Read measurement value block        HELP

Enter display group number XXX

The display reads:

–	Check the value in display field 2 (8^th digit from the left).

Target value: x x x x x x x 0

–	Depress the brake pedal and watch the value in display field 2 (8^th digit from the left).

Target value: x x x x x x x 1

–	Adjust the brake light switch if necessary, such that the target value is met.

–

Press →.

–	Press 0 and 6 for the function “End data transmission” and press Q to confirm the entry.

–	Switch off the ignition.

Read measurement value block    66    ->

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