Fault Code 0260
Fault code 0260Shift solenoid valve (S2) [Shift Solenoid 'B' Electrical]
NOTE: The ignition must be switched off and then switched on again in order to display an error message in the instrument cluster.
System in limp-home mode 1: Fault not caused by incorrect gear ratio or unusual switching.
NOTE: Please refer to 'Limp-home mode 1' table in the main chapter entitled 'Control module function (coding/programming)'.
Diagnostic conditions
NOTE: The ATF fluid level in the transmission must be OK and the specified ATF fluid must be used. The ATF filter and cooler must not be blocked.
The following requirements are met for at least 0.5 seconds:
- Voltage greater than 10.2 V and less than 15.5 V
- Ignition on
- Internal Tiptronic control module function test was completed successfully
- Engine runs without malfunctions
- An open circuit/short circuit to ground causes the power switch (in Tiptronic control module) to come 'ON'
Possible causes of fault
NOTE:
The 'Diagnosis/troubleshooting' shown below is adapted to suit the fault type displayed in the tester (please note fault type numbering 1, 2,... etc..). The fault memory Info key [F8] on the Porsche System Tester II No. 9588 can be used to read out the fault type in the 'extended fault memory'.
- 1. 'Open circuit/short circuit to B+': A short circuit to B+ causes the shift solenoid valve (S2) to be continually activated
- 1. 'Open circuit/short circuit to B+': An open circuit prevents activation of the shift solenoid valve (S2)
- 2. 'Short circuit to ground': A short circuit to ground prevents activation of the shift solenoid valve (S2)
Affected pins
Tiptronic control module plug:
- Pin 15 'voltage of shift solenoid valve (S2)', to existing transmission wiring plug 'pin A2'
Diagnosis/troubleshooting G 0210
Wiring diagram of shift solenoid valve (S2)
1 - Tiptronic control module
2 - Shift solenoid valve (S2)
15 - Pin (15)
I - Current flow
Data on shift solenoid valve (S2)
- Max. voltage drop on Tiptronic control module: 1.5 V
- Operating voltage (during switching): 10.5 V to 16.5 V
- Max. voltage drop in wiring: 0.08 V
- Max. power consumption: 1.9 A
- Default internal resistance: 13 ± 2 Ohms (at 20 °C)
NOTE:
Visual inspection: In the next troubleshooting section, please check first that the affected 'pins' on the Tiptronic control module plug connection and the 'pins' on the existing transmission wiring' plug connection are neither damaged nor corroded. Remove any soiling or corrosion/oxidation. Replace damaged parts/wires.
NOTE:
Replacing control module: Before replacing the 'Tiptronic control module', the ground connections, power supply and plug connections on the control module must be checked. Please observe the coding of the control module. After the test drive, read out the fault memory again with the Porsche System Tester II No. 9588. Additional causes of faults that could damage the 'Tiptronic control module' should be detected and remedied.
DANGER:
Danger of burns from hot ATF fluid.
Skin or clothing may burn following contact with hot ATF fluid.
- Always allow ATF fluid to cool before draining.
- Wear suitable protective clothing.
- Use a suitable collecting container.
1. Troubleshooting only for fault type: 'Open circuit/short circuit to B+'
2. Troubleshooting only for fault type: 'Short circuit to ground'
