audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

All Technical Service Bulletins for Brake Light Switch:|350701|Page 727 > < All Technical Service Bulletins for Brake Light Switch:|350701|Page 725
Page 4
background image

-

Connect multimeter (resistance measurement range) between contacts 1 and 4.

-

Specification: Infinity Ohms (no continuity)

-

Depress the brake pedal.

-

Specification: approx. 0 Ohm

-

Connect multimeter (resistance measurement range) between contacts 2 and 3.

-

Specification: approx. 0 Ohm

-

Depress the brake pedal.

-

Specification: Infinity Ohms (no continuity)

If the specifications are not obtained:

-

Replace brake light switch / brake pedal position switch.

If the specifications are obtained:

-

Check voltage supply.

Checking voltage supply

-

Connect VAG 1527 B voltage tester as follows:

All Technical Service Bulletins for Brake Light Switch:|350701|Page 727 > < All Technical Service Bulletins for Brake Light Switch:|350701|Page 725