Fault Code 0185
Fault code 0185Terminal 15 relay (activation)
Diagnostic conditions
- Internal KESSY control module function test
- Ignition on
Possible cause of fault
- Short circuit to ground or open circuit in wiring
- Short circuit to B+
- Fuse F39 (5A) in fuse carrier at left of dashboard faulty
- Relay for terminal 15 faulty
- Control unit faulty
Affected pins
- Plug A on control module: Pin 58
- Relay for terminal 15 in current distributor (under left seat; relay no. 433): Pin 4
Diagnosis/troubleshooting
NOTE:
Visual inspection: In the next troubleshooting section, please check first that the affected pins on the KESSY control module plug connection are neither damaged nor corroded. The wiring and plugs of the affected components must also be checked for external damage and correct contacts. Repair damaged or corroded pins if possible, otherwise replace affected pins. Repair or replace damaged wires.
NOTE:
Sporadic faults: In the event of faults that occur sporadically, the wiring positions that are linked to moving parts on and in the vehicle must be checked for each system. Various statuses that can cause faults must be simulated with the help of the wiring diagram.
NOTE: Conventional diagnosis/troubleshooting cannot be performed for the fault type 'short circuit to B+', which is displayed using the 'F8' key in the 9588 Porsche System Tester II. The reason for this is that the ignition cannot be switched on when there is no control module connected. As a result, it is not possible to differentiate uniquely between a short circuit to terminal 30 and a short circuit to terminal 15. A thorough visual inspection of components and wiring must therefore be carried out before replacing a control module.
