Fault, DTC Possible causes, elimination, notes · Test point 9

Fault, DTC Possible causes, elimination, notes Test point 9 Coolant shutoff valve Faulteffect: Open circuiVshort to ground, The reduced driving program is activated short to B+ if there is an open circuiVshort to ground. DTC 93 In the event of a short to 8+, the fault is only entered in the fault memory. Note The function of the coolant shutoff valve can be tested with the PorscheSystem Tester 2 (Drive links/Coolantshutoff valve). 1. Checkvalvewiththe tester. 2. Check internal resistance of the valve. To do this, pull off plug connection of the valve and connect ohmmeter to pins 1 and 2. Nominalvalue: 25 35.Q 3. Check wire from the Tiptronic control module connector pin 51 to the coolant shutoff valve connector pin 1 for open circuit, short to ground and short to B+. Test point 10 Multi-functionswitch Faulteffect: Signal implausible Reduceddrivingprogram. DTC 35 Note The multi-functionswitch (MFS)can be tested with the Porsche System Tester 2 (Inputsignals/Multi-functionswitch), 1. Test the MFS with the tester. To do this, shift through all selector lever positions in steps and check whether the position display in the instrumentcluster and the display on the tester agree. 37 -D 26 37 01 Diagnosis/Troubleshooting, Tiptronic 99637D21 Printed in Germany -8, 1998