Test Point 9

TEST POINT 9
Coolant Shutoff Valve Open Circuit/Short To Ground, Short To B+

DTC 93

Fault Effect: The reduced driving program is activated if there is an open circuit/short to ground.

The fault is only entered in the fault memory in the event of a short circuit to plus.

Note:
The function of the coolant shutoff valve can be tested with the Porsche System Tester 2 (Drive links/Coolant shutoff valve).

1. Test valve with the Tester.

2. Check internal resistance of the valve. To do this, pull off plug connection on the valve and connect ohmmeter to pin 1 and pin 2.

Nominal value: 25 - 35 ohms

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+.