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A/C Signal|Testing and Inspection|Page 5255 > < Valve Clearance|Specifications
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A/C Signal: Testing and Inspection

A/C Compressor Shut-off, Checking

Special Tools and Equipment

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VAG1526A

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VAG1527B

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VAG1594A

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VAG1598/31

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VAS5051 with VAG5051/1

NOTE:

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The A/C compressor signal communicates to the ECM that the compressor will be switched on in 140 ms.

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The Engine Control Module (ECM) can switch off the A/C compressor via the same wire connection.

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Engine Control Module (ECM) switches off A/C compressor:
- - during hard acceleration (Wide Open Throttle 1st gear)
- - in emergency mode (emergency operation)
- - after initiating basic setting (function 04)

Test requirements:

A/C Signal|Testing and Inspection|Page 5255 > < Valve Clearance|Specifications