Porsche 996 TT Repair Manual page 1770

control module using a multimeter. Pin 5 and
pin 9.
3 Perform heat element resistance test for the
backrest and seat area using a multimeter.
Pull the plug off the seat heating control
module and check the resistance on the plug
bracket RE/WT pin 3 and BR pin 9.
4 Seat heating control module
5 Check fuse in the fuse box for the seat
heating.
6 Check seat heating switch lines for continuity
using a multimeter.
996420, 996421, 996450, 996451, 996430, 996431, 996840, 996841
Test plan for the seat heating
einordnung
Depending on Check resistance test on backrest
temperature, and seat area heating elements via
approx 2 © ' Step the respective connecting plug
4 (approx. 1 ©) and replace defect
heating element
'. End
' replace.
' End
' Step 6 Replace fuse and perform function
test.
' End
Replace switch for the seat heating.
' End
1707