Test point

Oil cooler blower relay Detectable faults: Short to positive

Note

Fault code 57

Monitoring of control lead to cooler blower relay

(G10 Central Electrical System).

1) Check Tiptronic control unit connector/pin 49 to relay base/termial TF for short to positive. (Observe connection to A/C control unit).

2) Check connection form relay base/terminal TF to cooling-water temperature switch for short to positive.

3) On vehicles with air conditioning, check connection from relay base/terminal TF to pressure switch/air conditioning for short to positive.

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