Left Temperature Door Motor (V158)

Left Temperature Door Motor (V158)

with Left Temperature Door Potentiometer/Actuator (G220)

• You can check the adjustment motor's function via the "output diagnostic test mode" using Vehicle diagnosis, testing and information system (VAS5051B) in the "Guided Fault Finding" function or check it without a tester as follows: if not using a tester, connect both contacts 5 and 6 on the adjustment motor's connector to a 12 volt DC source. The adjustment motor will move in one direction up until the stop, and will reverse direction if the plus and minus contacts are switched. Use an adapter cable. Refer to => [ Adapter Cable for Activating Control Motors ] Adapter Cable for Activating Control Motors.

• Perform a basic setting on the A/C after installing a new motor. Refer to Vehicle diagnosis, testing and information system (VAS5051B) in the "Guided Fault Finding" function.

• Use "output diagnostic test mode" and "basic setting" to test the activation of A/C (heater) electrical components, if necessary (for example, allocation test) using Vehicle diagnosis, testing and information system (VAS5051B) in the "Guided Fault Finding" function.

• On the Audi TT with A/C system, both motors for left and right temperature doors are controlled via one characteristics curve, depending on the programmed end stops (only one temperature setting on the Climatronic control module (J255) ).

• Depending on the measured temperatures, the calculated sunlight intensity and setting on Climatronic control module, the calculated specified outflow temperature and therefore, the specified position of the positioning motor, may be different for the left and right side.

• On the Audi TT with heater (without A/C system), only one temperature door motor is installed. Both temperature doors for the left and right sides are connected via a shaft and moved together by the Left Temperature door Motor (V158).

Removing

- Remove the complete instrument panel and instrument panel cross-member.

- Remove left footwell vent - A - (driver side).






- Remove Data bus on board diagnostic interface (J533) (secured to bracket - A - in area of steering column).






- Remove bracket - A -.

- Mark connector - C - to Left Temperature Door Motor (V158) (danger of interchange with other connectors of same construction).






- Disconnect connector - C - from Left Temperature Door Motor.

- Remove cover (on heater core) - A -.

- Remove bolts - D -.

- Remove Left Temperature Door Motor - B -.

- Loosen lever - E - on Left Temperature Door Motor from connecting rod - F -.

Installing

• Currently the lever - E - on the motor is "gray" and the connecting rod - F - "black".






Reinstall all removed components in the opposite sequence while observing the following:

- Install the wiring harness so that it cannot come in contact with any moving parts (e.g. the actuating arm of the control motor).

- Check Climatronic control module (J255) DTC memory and erase any possible displayed malfunctions using Vehicle diagnosis, testing and information system (VAS5051B) in the "Guided Fault Finding" function.

- Perform a basic setting and output diagnostic test on the A/C and check the DTC memory one more time. Refer to Vehicle diagnosis, testing and information system (VAS5051B) in the "Guided Fault Finding" function.