Function Selector Switch, Checking

A - Function selector switch

B - RESET button

Select all computer functions in sequence by pressing upper or lower part of function selector switch -A-

Courtesy of AUDI OF AMERICA, LLC

If functions cannot be selected:

-- Remove instrument cluster and disconnect connectors.

-- Connect adapter cable:VAG1598/13  to 10-point instrument cluster connector (black).

-- Set multimeter (Fluke 83 or equivalent) to measuring resistance (Ω).

-- Connect adapter cable:VAG1598/13  to test box.

-- Connect multimeter between sockets 1 and 3 of VAG 1598 test box.

• Must be ∞ ohms (Ω) (no continuity)

-- Press RESET button -B-.

• Must be 0 ohms (Ω) (continuity)

-- Connect multimeter between sockets 1 and 4 of VAG 1598 test box.

• Must be ∞ ohms (Ω) (no continuity)

-- Press upper function selector switch.

• Must be 0 ohms (Ω) (continuity)

-- Connect multimeter between sockets 1 and 2 of VAG 1598 test box.

• Must be ∞ ohms (Ω) (no continuity)

-- Press lower function selector switch.

• Must be 0 ohms (Ω) (continuity)

If one of the specified values is NOT obtained:

-- Check wiring for open circuit according to wiring diagram, repair as necessary, or

-- Replace function selector switch.