Basic Setting (Function 04)

Basic Setting

NOTE:
- Only an outline of "Basic setting" function is given. Implement "Basic setting" function as part of Guided Fault-Finding routine "Guided Fault-Finding" function of Diagnostic Operation System VAS 5051.
- On vehicles equipped with a Rear A/C Control Head (Climatronic) E265 as optional equipment, basic setting for Climatronic Control Module J255 must be followed by basic setting for Rear A/C Control Head (Climatronic) E265 "Guided Fault-Finding" function of Diagnostic Operation System VAS 5051.

- With ignition off, connect Diagnostic Operation System VAS 5051A with Diagnostic Cable - 3 meter VAS 5051/5A to 16- pin diagnostic socket in vehicle.
- Use address word "08" or "28" to select air conditioner/heater electronics or "rear AC operating element.

NOTE:
- Coding of Climatronic Control Module J255 checked and if necessary corrected Reading (currently valid code is displayed in measured value block) Climatronic Control Module J255, Coding (Function 07)
- DTC memory checked, Check DTC Memory (Function 02) displayed DTCs eliminated and DTC memory erased. Automatic Climate Control System
- Air conditioner switched on ("Auto" mode).







Indicated on display of Diagnostic Operation System VAS 5051A:
- Select function "04 - Basic setting".







Indicated on display of Diagnostic Operation System VAS 5051A:
- Prompt for entering display group appears in display zone - 1 - .
- Input keypad appears in display zone - 2 - .

- Use input keypad in display zone - 2 - to enter "01" or "001" for "display group number 001" and confirm by touching Q key.







Indicated on display of Diagnostic Operation System VAS 5051A:

Control motors installed are then actuated in specified sequence.

End positions of control motors (resistance values in stop position) are stored in Climatronic Control Module J255 (or Rear A/C Control Head (Climatronic) E265) (resistance value of potentiometers in control motors) and used for further control action.

Once control motors have reached both end stops, they are moved again from one stop to other. During this process, adjustment time is measured and stored in Climatronic Control Module J255 (or Rear A/C Control Head (Climatronic) E265) for use in event of emergency operation.

Indicated on display of Diagnostic Operation System VAS 5051A:

Wait until display "0" appears in display zone - 1 - for feedback values indicated.

NOTE:
- Basic setting has been completed when "0" appears in display zones.
- Touch key to return to selection program.
- If malfunction in control motor potentiometer is detected during basic setting, substitute value is stored as adaptation value (learned value for this potentiometer) and displayed in appropriate measured value block. DTC "Upper or lower limit value exceeded" is stored in DTC memory for this control motor.
- Touching keys - 2 - permits switching to a different display group.
- Touching keys - 3 - permits switching to a different function (e.g. from "Basic setting" to "Reading measured value block" and back again).

- Check DTC memory. Check DTC Memory (Function 02)

NOTE: If a malfunction has been detected and eliminated, basic setting is to be repeated.

- Terminate self-diagnosis with Climatronic Control Module J255. Automatic Climate Control System
- Use address word "28" to select Rear A/C Control Head (Climatronic) E265 (optional equipment)
- Perform basic setting for components actuated by Rear A/C Control Head (Climatronic) E265 in same manner as for components actuated by Climatronic Control Module J255.