Manufacturer Codes: 31

Fault, DTC's 31, 32, 33 Test Point 5

Solenoid valves 1, 2, 3 Open circuit/short to ground, short to B+

Possible causes, elimination, notes

Fault effect:
Reduced driving program.

NOTE: The functions of the solenoid valves (SVs) can be checked with the Porsche System Tester 2 (Drive links/ Solenoid valves 1, 2, 3). The activation pulses of the valves can be heard as a clicking sound near the transmission.

1. Check function of the SV s with the tester.
2. Check SV with wiring. To do this, connect an ohmmeter to the control module connector and measure the resistance.

SV1 = Pin 52 and pin 30
SV2 = Pin 52 and pin 33
SV3 = Pin 52 and pin 32

Nominal value: 24... 36 Ohms.

3. Check wiring from the control module connector pins 30, 32 and 33 to the 16-pole transmission connector pins 8, 4 and 9 for continuity, short to ground and short to B+.
4. Check SV. To do this, remove the ATF pan, disconnect plug connection from the SV and measure the resistance.

Nominal value: 24... 36 Ohms.