TT L4-1.8L Turbo (BEA) (2004)
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Remove screw -A-.
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Remove photo sensor -B-.
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Disconnect electrical connection -C-.
NOTE: If VAG 1551 Scan Tool display shows a constant value of around 90% when reading the measuring value block for A/C control head -E87-,
(Display Group 006), check wiring and terminal assignments to -E87- connector -C- according to wiring diagram (wiring may be improperly connected).
