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Home >> Volkswagen >> 2001 >> Jetta GL, 2.0 B >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 38 (1.9L - Fuel Injection Glow Plug, Engine Code: ALH (A4 Platform)) >> 23 Diesel Fuel Injection >> Additional signals, checking >> A/C system signals, checking >> A/C signal and engine speed adaptation, checking

A/C signal and engine speed adaptation, checking

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This signal provides information to the ECM to maintain a smooth idle even while difficult demands are place upon the engine by the A/C system.

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