Monday 28 May 2018

P17B6 Porsche Cayman S (987) F6-3.4L

P17B6
Diagnostic information - PDK
Clutch 1 blocks for POS N/P or D/R
Diagnostic conditions
The control unit initially tests internal function sequences when the ignition is switched on (terminal 15). If they are OK, all diagnosable outputs are
then tested and any faults are stored.
- Ignition on
- The following faults are not detected: P0843, P181A
- The following faults are not detected: P1706, P1707
Fault effects
- Only gears 2, 4 and 6 are possible
- Transmission limp-home indication in instrument cluster control unit
Clutch 2 Blocks For POS N/P Or D/R
P17B6
2010 Porsche Cayman S (987) F6-3.4L   Page 82
Diagnostic information - PDK
Clutch 2 blocks for POS N/P or D/R
Diagnostic conditions
The control unit initially tests internal function sequences when the ignition is switched on (terminal 15). If they are OK, all diagnosable outputs are
then tested and any faults are stored.
- Ignition on
- The following faults are not detected: P0843, P181A
- The following faults are not detected: P1706, P1707
Fault effects
- Only gears 1, 3, 5 and 7 are possible
- Transmission limp-home indication in instrument cluster control unit
Clutch 1 Cannot Be Opened
P17B6
Diagnosis information - PDK
Clutch 1 cannot be opened
Diagnostic conditions
The control unit initially tests internal function sequences when the ignition is switched on (terminal 15). If they are OK, all diagnosable outputs are
then tested and any faults are stored.
- Ignition on
- The following faults are not detected: P0841, P0843, P181A
Possible fault causes
- Shunt in wiring harness
- Clutch faulty
- Hydraulics faulty
Fault setting conditions
- Actual pressure at clutch 1 < touchpoint + offset (2 bar)
Fault effects
- Gear held
- Transmission limp-home indication in instrument cluster control unit
Clutch 2 Cannot Be Opened
P17B6
Diagnosis information - PDK
Clutch 2 cannot be opened
Diagnostic conditions
The control unit initially tests internal function sequences when the ignition is switched on (terminal 15). If they are OK, all diagnosable outputs are
then tested and any faults are stored.
- Ignition on
- The following faults are not detected: P0846, P0848, P181B
Possible fault causes
- Shunt in wiring harness
- Clutch faulty
- Hydraulics faulty
Fault setting conditions
- Actual pressure at clutch 2 < touchpoint + offset (2 bar)
Fault effects
- Gear held
- Transmission limp-home indication in instrument cluster control unit
Clutch 1 Cannot Be Opened During Shift Overlap
P17B6
2010 Porsche Cayman S (987) F6-3.4L   Page 83
Diagnosis information - PDK
Clutch 1 cannot be opened during shift overlap
Diagnostic conditions
The control unit initially tests internal function sequences when the ignition is switched on (terminal 15). If they are OK, all diagnosable outputs are
then tested and any faults are stored.
- Ignition on
Possible fault causes
- Clutch faulty
- Hydraulics faulty
Fault setting conditions
- Tolerance value exceeded
Fault effects
- Transmission limp-home indication in instrument cluster control unit
Clutch 2 Cannot Be Opened During Shift Overlap
P17B6
Diagnosis information - PDK
Clutch 2 cannot be opened during shift overlap
Diagnostic conditions
The control unit initially tests internal function sequences when the ignition is switched on (terminal 15). If they are OK, all diagnosable outputs are
then tested and any faults are stored.
- Ignition on
Possible fault causes
- Clutch faulty
- Hydraulics faulty
Fault setting conditions
- Tolerance value exceeded
Fault effects
- Transmission limp-home indication in instrument cluster control unit
Clutch 1, Implausible Control Pressure
P17B6
Diagnosis information - PDK
Clutch 1, implausible control pressure
Diagnostic conditions
The control unit initially tests internal function sequences when the ignition is switched on (terminal 15). If they are OK, all diagnosable outputs are
then tested and any faults are stored.
- Ignition on
- The following faults are not detected: P0841, P0843, P181A
Possible fault causes
- Shunt in wiring harness
- Clutch faulty
- Hydraulics faulty
Fault setting conditions
- Actual pressure at clutch 1 < touchpoint + offset (1 bar)
- Actual pressure at clutch 1 < prefilling pressure + offset (0.6 bar)
Fault effects
- Open clutches 1 and 2
- Disengage all gears
- Moving off in 2nd gear
2010 Porsche Cayman S (987) F6-3.4L   Page 84
- Only gears 2, 4 and 6 are possible
- Transmission limp-home indication in instrument cluster control unit
Clutch 2, Implausible Control Pressure
P17B6
Diagnosis information - PDK
Clutch 2, implausible control pressure
Diagnostic conditions
The control unit initially tests internal function sequences when the ignition is switched on (terminal 15). If they are OK, all diagnosable outputs are
then tested and any faults are stored.
- Ignition on
- The following faults are not detected: P0846, P0848, P181B
Possible fault causes
- Shunt in wiring harness
- Clutch faulty
- Hydraulics faulty
Fault setting conditions
- Actual pressure at clutch 2 < touchpoint + offset (1 bar)
- Actual pressure at clutch 2 < prefilling pressure + offset (0.6 bar)
Fault effects
- Open clutches 1 and 2
- Disengage all gears
- Moving off in 2nd gear
- Only gears 1, 3, 5 and 7 are possible
- Transmission limp-home indication in instrument cluster control unit
Clutch 1 Remains Mechanically At Excessively High Pressure After Rapid Filling
P17B6
Diagnosis information - PDK
Clutch 1 remains mechanically at excessively high pressure after rapid filling
Diagnostic conditions
The control unit initially tests internal function sequences when the ignition is switched on (terminal 15). If they are OK, all diagnosable outputs are
then tested and any faults are stored.
- Ignition on
- The following faults are not detected: P0841, P0843, P181A
Possible fault causes
- Shunt in wiring harness
- Clutch faulty
- Hydraulics faulty
Fault setting conditions
- Pressure in target gear > filling pressure + offset (10 bar)
Fault effects
- Open clutches 1 and 2
- Disengage all gears
- Moving off in 2nd gear
- Only gears 2, 4 and 6 are possible
- Transmission limp-home indication in instrument cluster control unit
Clutch 2 Remains Mechanically At Excessively High Pressure After Rapid Filling
P17B6
Diagnosis information - PDK
Clutch 2 remains mechanically at excessively high pressure after rapid filling
Diagnostic conditions
The control unit initially tests internal function sequences when the ignition is switched on (terminal 15). If they are OK, all diagnosable outputs are
2010 Porsche Cayman S (987) F6-3.4L   Page 85
then tested and any faults are stored.
- Ignition on
- The following faults are not detected: P0846, P0848, P181B
Possible fault causes
- Shunt in wiring harness
- Clutch faulty
- Hydraulics faulty
Fault setting conditions
- Pressure in target gear > filling pressure + offset (10 bar)
Fault effects
- Open clutches 1 and 2
- Disengage all gears
- Moving off in 2nd gear
- Only gears 1, 3, 5 and 7 are possible
- Transmission limp-home indication in instrument cluster control unit
Clutch 1 Slips With High Differential Speed
P17B6
Diagnosis information - PDK
Clutch 1 slips with high differential speed
Diagnostic conditions
The control unit initially tests internal function sequences when the ignition is switched on (terminal 15). If they are OK, all diagnosable outputs are
then tested and any faults are stored.
- Ignition on
Possible fault causes
- Clutch faulty
- Hydraulics faulty
Fault setting conditions
- Engine speed - shaft speed 1 - desired slip > maximum permissible slip
Fault effects
- Gear held
- Moving off in 2nd gear
- Only gears 2, 4 and 6 are possible
- Transmission limp-home indication in instrument cluster control unit
Clutch 2 Slips With High Differential Speed
P17B6
Diagnosis information - PDK
Clutch 2 slips with high differential speed
Diagnostic conditions
The control unit initially tests internal function sequences when the ignition is switched on (terminal 15). If they are OK, all diagnosable outputs are
then tested and any faults are stored.
- Ignition on
Possible fault causes
- Clutch faulty
- Hydraulics faulty
Fault setting conditions
- Engine speed - shaft speed 2 - desired slip > maximum permissible slip
Fault effects
- Gear held
- Moving off in 3rd gear
- Only gears 1, 3, 5 and 7 are possible
- Transmission limp-home indication in instrument cluster control unit
Clutch 1 Slips With Low Differential Speed
2010 Porsche Cayman S (987) F6-3.4L   Page 86
P17B6
Diagnosis information - PDK
Clutch 1 slips with low differential speed
Diagnostic conditions
The control unit initially tests internal function sequences when the ignition is switched on (terminal 15). If they are OK, all diagnosable outputs are
then tested and any faults are stored.
- Ignition on
Possible fault causes
- Clutch faulty
- Hydraulics faulty
Fault setting conditions
- Engine speed - shaft speed 1 - desired slip > maximum permissible slip
Fault effects
- Gear held
- Moving off in 2nd gear
- Only gears 2, 4 and 6 are possible
- Transmission limp-home indication in instrument cluster control unit
Clutch 2 Slips With Low Differential Speed
P17B6
Diagnosis information - PDK
Clutch 2 slips with low differential speed
Diagnostic conditions
The control unit initially tests internal function sequences when the ignition is switched on (terminal 15). If they are OK, all diagnosable outputs are
then tested and any faults are stored.
- Ignition on
Possible fault causes
- Clutch faulty
- Hydraulics faulty
Fault setting conditions
- Engine speed - shaft speed 2 - desired slip > maximum permissible slip
Fault effects
- Gear held
- Moving off in 3rd gear
- Only gears 1, 3, 5 and 7 are possible
- Transmission limp-home indication in instrument cluster control unit
Clutch 1 Blocks For POS N/P Or D/R