Installing Micro Switches; Troubleshooting - Porsche 996 TT Repair Manual

Open the protective sleeve of the wiring harness by a few centimetres and cut wiring of micro
switch using a pair of side cutters.

Installing micro switches

1. Carefully push the new micro switch into the holder −1− . The micro switch with the blue lead at the
bottom and the micro switch with the grey lead at the top.
2. The operating principle of the micro switches differs (NO or NC contacts)
3. Join wires using crimp connector and crimping tool. => Tools and
materials
• Cut off lines to different lengths (due to the shrink connection).
• Slide shrink−fit hose over the leads.
Strip 10 mm of insulation off the wires.
•
• Connect wires with crimp connectors (do not confuse colours of the individual wires).
• Shrink shrink−fit hoses with a hot−air gun. It is essential that all wires are watertight.
• Wrap commercially available PVC tape all around the area of the connection points.
4. Position holder with micro switch −1− on the hydraulic cylinder. Fastening screws −2− Tightening
torque: 0.5 Nm.(0.5 ftlb.)
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Troubleshooting

Procedure
1 Possible causes of fault
2 Drive motor for the pump does
not turn.
3 Drive motor for the pump turns.
Hydraulic cylinders do not move.
4 One hydraulic cylinders does not
extend.
Removing micro switches
einordnung
Work instruction
Diagnosis troubleshooting, spoiler
drive ' Spoiler control, 9150
Connect battery voltage to the pump. ' Pump faulty, replace
Visual inspection:
−oil loss, visible fluid (Pentosin) on
hydraulic cylinder.
Cause
=> Removing pump
' Pump faulty, replace
=> Removing pump
' Hydraulic cylinder
faulty, replace
=> Removing hydraulic
cylinder
1537