Driver Seat Cannot Be Adjusted

Checking river's seat voltage supply

Courtesy of AUDI OF AMERICA, LLC

Driver's seat voltage supply, checking

-- Remove front seat fasteners, and raise front of seat for access to connector-- Disconnect 6-point connector (brown) from driver's seat-- Set multimeter (Fluke 83 or equivalent) to measure resistance (Ω) and connect test leads alternately between terminal 4 of 6-point connector and Ground (GND), then between terminal 5 of 6-point connector and GND

Must be 0 Ω (continuity)

If YES

If NO

Go to A next chart

-- Check and repair wiring according to wiring diagram

End

-- Set multimeter (Fluke 83 or equivalent) to measure voltage and connect test leads alternately between terminal 1 of 6-point connector and GND, then between terminal 2 of 6-point connector and GND

Must be approximately 12 volts

Specified values NOT OK

Specified values OK

-- Check and repair wiring according to wiring diagram

-- Connect test leads between terminals 3 and 4 of 6-point connector-- Switch memory control ON

Must be 12 volts

Specified value NOT OK

Specified value OK

End

-- Check and repair wiring according to wiring diagram or, replace memory control button

Go to B next chart

Voltage supply relay, checking voltage supply

-- Reconnect 6-point brown connector-- Disconnect 9-point connector from voltage supply relay-- Set multimeter (Fluke 83 or equivalent) to measure resistance (Ω)-- Connect test leads between terminals 5 of 9-point connector and GND

Must read 0 Ohm (continuity)

-- Set multimeter to measure voltage-- Connect test leads between terminals 4 and 5 of 9-point connector-- Press memory control ON/OFF switch to ON

Must read approximately 12 volts

-- Connect test leads between terminals 8 and 5 of 9-point connector

Must read approximately 12 volts

One or more specified values NOT OK

All specified values OK

-- Check and repair wiring according to wiring diagram

Go to next chart

End

Testing voltage supply relay

Courtesy of AUDI OF AMERICA, LLC

Voltage supply relay, checking

-- Set multimeter (Fluke 83 or equivalent) to measure resistance (Ω)-- Connect test leads between terminals 85 and 86 of relay

Must be approximately 30 Ω

-- Connect test leads between terminals 30 and 87a of relay

Must be 0 Ω (continuity)

-- Connect test leads between terminals 30 and 87 of relay

Must be ∞ Ω (no continuity)

One or more specified values NOT OK

All specified values OK

-- Replace voltage supply relay

Go to next chart

End

Checking memory control switch

Courtesy of AUDI OF AMERICA, LLC

Memory control switch, checking

-- Reinstall voltage supply relay-- Open driver's door-- Disconnect 8-point connector -D- (brown) located on seat control module-- Set multimeter (Fluke 83 or equivalent) to measure resistance (Ω)-- Connect test leads between terminal -1- of 8-point connector -D- and GND-- Press memory control ON/OFF switch ON

Must read 0 Ω (continuity)

-- Set multimeter to measure voltage-- Connect test leads between terminal -8- and GND

Must read 12 volts

-- Connect test leads between terminal -3- and -1- of 8-point connector-- Press and hold memory button switch

Must read approximately 12 volts

-- Connect test leads between terminal -5- and -1- of 8-point connector-- Press and hold memory control switch button 1

Must read approximately 12 volts

-- Connect test leads between terminal -2- and -1- of 8-point connector-- Press and hold memory control switch button 2

Must read approximately 12 volts

Go to next chart

-- Connect test leads between terminals 6 and 1 of 8-point connector -- Press and hold memory control switch button 3

Must read approximately 12 volts

-- Connect test leads between terminals 7 and 1 of 8-point connector -- Press and hold memory control switch button 4 -- Must read approximately 12 volts

One or more specified values NOT OK

All specified values OK

-- Check and repair wiring according to wiring diagram or replace memory control switch/button

Seat memory control module, checking GND

-- Set multimeter (Fluke 83 or equivalent) to measure resistance (Ω)-- Connect test leads between terminal 4 of 8-point connector -D- (brown) and GND

Must read 0 Ω (continuity)

-- Close driver's door

Must read ∞ Ω (no continuity)

End

Go to C next chart

Seat memory control module, checking GND, cont.

Specified values NOT OK

Specified values OK

-- Check and repair wiring according to wiring diagram or replace door contact switch

Seat adjustment switch, checking voltage supply

-- Reconnect 8-point connector -D- (brown)-- Remove seat adjustment switch-- Disconnect connector to switch-- Set multimeter (Fluke 83 or equivalent) to measure voltage-- Connect test leads first between terminals -2- and -9-, then between terminals -3- and -10- of connector

Must read 12 volts

End

One or more specified values NOT OK

All specified values OK

-- Check and repair wiring according to wiring diagram

Go to D next chart

End

8-pin connector

Courtesy of AUDI OF AMERICA, LLC

6-pin connector

Courtesy of AUDI OF AMERICA, LLC

Driver's seat adjustment switch, checking

-- Disconnect yellow connector -A- (8-point) and red connector -B- (6-point) from control module -- Set multimeter to measure voltage-- Connect one test lead to GND, and in succession connect other test lead to terminals 5, 2, 6, 3 of connector -B- and operate seat switch in following sequence:

Front of seat up (red connector, terminal 5)
Front of seat down (red connector, terminal 2)
Backrest forward (red connector, terminal 6)
Backrest backward (red connector, terminal 3)

Must all read approximately 12 volts

-- Repeat procedure on connector -A-, terminals 8, 4, 6, 2, and operate seat switch in following sequence:

Rear of seat up (yellow connector, terminal 8)
Rear of seat down (yellow connector, terminal 4)
Seat forward on track (yellow connector, terminal 6)
Seat rearward on track (yellow connector, terminal 2)

Must all read approximately 12 volts

-- Reinstall connectors and switch

Specified values NOT OK

Specified values OK

-- Check and repair according to wiring diagram, or replace switch

Go to E next chart

End

Seat memory control module, checking

Note: The 6-point blue connector is applicable to vehicles with power headrests. It may be necessary to cut securing tie wraps for control module to gain access to connectors. -- Do not disconnect yellow connector -A- (8-point), red connector -B- (6-point), and green connector -C- (6-point) from seat memory control module when checking -- Set multimeter (Fluke 83 or equivalent) to measure voltage-- Connect one test lead to GND, and in succession connect other test lead to terminals 1, 4 of connector -B- and operate seat switch in following sequence:

Front of seat up (red connector, terminal 1)
Front of seat down (red connector, terminal 4)

Must all read approximately 12 volts

-- Repeat procedure on connector -A-, terminals 7, 3, 5, 1 and operate seat switch in following sequence:

Rear of seat up (yellow connector, terminal 7)
Rear of seat down (yellow connector, terminal 3)
Seat forward on tracks (yellow connector, terminal 5)
Seat rearward on tracks (yellow connector, terminal 1)

Must all read approximately 12 volts

Go to -E1- next chart

-E1-

-- Repeat procedure on connector -C-, terminals 2, 4, and operate seat switch in following sequence:

Backrest forward (green connector, terminal 2)
Backrest backward (green connector, terminal 4)

Must all read approximately 12 volts

One or more specified values NOT OK

Specified values OK

-- Replace seat memory control module

Go to F next chart

End

Fore/aft, seat height adjustment actuators, checking

-- Disconnect black 6-point connector -E- from seat memory control module -- Set multimeter (Fluke 83 or equivalent) to measure resistance (Ω)

Height adjustment, front -- Connect test leads between terminals 3 and 2 of connector -E--- Using seat adjustment switch, operate height adjustment actuator

Resistance of actuator varies with seat position

Height adjustment, rear -- Connect test leads between terminals 6 and 2 of connector -E--- Using seat adjustment switch, operate height adjustment actuator

Resistance of actuator varies with seat position

Go to -F1- next chart

-F1-

Fore/aft adjustment -- Connect test leads between terminals 5 and 2 of connector -E- -- Using seat adjustment switch, operate fore/aft adjustment actuator

Resistance of actuator varies with seat position

Actuator resistance DOES NOT vary with seat position

Actuator resistance DOES vary with seat position

-- Replace malfunctioning actuator(s)

Go to G next chart

End

Backrest actuator, checking

-- Set multimeter (Fluke 83 or equivalent) to measure resistance (Ω)-- Connect test leads between terminals 3 and 6 of connector -C- -- Using backrest adjustment switch, operate backrest actuator

Do not recline backrest more than 35°
Resistance of actuator varies with backrest position

-- Reinstall all tie wraps and fasteners

Actuator resistance DOES NOT vary with seat position

Actuator resistance DOES vary with seat position

-- Replace backrest actuator

-- Replace backrest adjustment motor

End