Output Diagnosis Test Mode (Function 03)

Automatic climate control

CAUTION: Do not connect the VAG1598 test box or any of the VAG1595 adapter cables to the A/C control head while using the VAG1551 scan tool.

To check Idle Air Control (IAC) and A/C compressor engagement functions during output DTM:
- Remove Engine Control Module (ECM) See 'Powertrain Management.'
- Using adapter cables VAG1598/11 and / or VAG1598/12, connect VAG1598 test box to ECM.

Requirements:
- If necessary, output DTM may be repeated several times.
- Check DTC memory and eliminate and repair any malfunctions.
- Initiate "Basic Setting" function 04.
- Stop engine (switch ignition off).

Procedure:
- Connect VAG1551 scan tool.
- Start engine.

Indicated on display 1)
1) Operating modes -1- and -2- appear alternately

V.A.G - On Board Diagnostic HELP
1 - Rapid data transfer
2 - Blink code output


NOTE: Press the HELP button to obtain additional operating information.


Press the -> button to step through program sequence.
- Switch printer ON with print button (button lights up).
- Press button -1- to select "Rapid data transfer" operating mode 1.

Indicated on display

Rapid data transfer HELP
Insert address word XX

- Press buttons -0- and -8- to select "A/C heating electronics" address word 08.

Indicated on display

Rapid data transfer Q
08 - AC/Heating Electronic

- Press -Q- button to confirm input.

Control Module identification and coding are displayed.

4A0820043A Klima-Vollautomat DXX ->
Coding 052 WSC 23890

If "Control module does not answer" appears in the display , checking DTC memory. Checking and Erasing DTC Memory

Rapid data transfer HELP
Control module does not answer!

- Press -> button.

Indicated on display

Rapid data transfer HELP
Selection function XX

- Press buttons -0- and -3- to select "Output Diagnostic Test Mode" function 03.

Indicated on display

Rapid data transfer Q
03 - Output Diagnostic Test Mode

- Press Q button to enter input.

Indicated on display

Output diagnostic test mode ->
A/C magnetic clutch - N25

- See chart for specified function.
- Press -> button to proceed to next component.

NOTE:
- Press -C- button to end output DTM.
- Check DTC memory after completing output DTM.
- If "Function is unknown or cannot be carried out at the moment" appears on display, read measuring value block (Display Group 001) to determine malfunction.

Output Diagnosis Test Mode Tables

NOTE: Component malfunctions in the following tables marked with and asterisk (*) are stored in Diagnostic Trouble Code (DTC) memory.

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