Charging System - Unnecessary Alternator Replacement Service
2
26/10 ENU 2722
May 10, 2010
The present document was valid at the time of print. A later version may be available online
Generator Replaced Unnecessarily (26/10)
Model year:
as of 2007
Vehicle Type:
Boxster (987)/Boxster S (987)
Cayman/Cayman S
Concerns:
Modified charge voltage range.
Information:
Generator replaced unnecessarily.
We have discovered that generators replaced and returned under warranty, that in subsequent tests by the manufacturer, these generators were found to be "functioning correctly".
We would like to inform you of the following at this point...
> .... As of model year 2007, the generator has a charge voltage of between 12.0 and 16.0 V and must be evaluated as functioning correctly in this
2010 Porsche Cayman S (987) F6-3.4L Copyright ? 2013, ALLDATA 10.52SS Page 22
range.
> .... The controller temperature is always checked before measuring the voltage (--> DME control unit --> Actual values --> U040_Generator controller temperature).
The controller temperature must be max. 135 0C for the measurement. If this temperature is exceeded, an incorrect measured value will be determined.
> .... A measuring device, which shows the voltage value as a digital number or an analog pointer display, must be used to measure the voltage.
> .... The measuring device is connected directly to the generator (term. 30).
> .... Mechanical or electrical generator faults will be stored as fault codes in the DME control unit (fault code P1694 to P1699).
.... Fault codes for undervoltage or over voltage (P1694 or P1695) can also occur temporarily due to driving and environmental conditions.
.... Guided Fault Finding" in PIWIS Tester 9718 must be used for evaluating fault codes.
987110, 987111, 987120, 987121, 987140, 987141, 987160, 987161, 987310, 987311, 987320, 987321, 987330, 987340, 987360, 987361, 987371, 987381, 987720, 987721, 987740, 987741, 997110, 997111, 997120, 997121, 997140, 997141, 997310, 997311, 997320, 997321, 997410, 997411, 997420, 997421, 997430, 997431, 997450, 997451, 997510, 997511, 997520, 997521, 997610, 997611, 997620, 997621, 997630, 997631, 997650, 997651, 997720, 997721
Model year as of 2007 C02, C36
2
26/10 ENU 2722
May 10, 2010
The present document was valid at the time of print. A later version may be available online
Generator Replaced Unnecessarily (26/10)
Model year:
as of 2007
Vehicle Type:
Boxster (987)/Boxster S (987)
Cayman/Cayman S
Concerns:
Modified charge voltage range.
Information:
Generator replaced unnecessarily.
We have discovered that generators replaced and returned under warranty, that in subsequent tests by the manufacturer, these generators were found to be "functioning correctly".
We would like to inform you of the following at this point...
> .... As of model year 2007, the generator has a charge voltage of between 12.0 and 16.0 V and must be evaluated as functioning correctly in this
2010 Porsche Cayman S (987) F6-3.4L Copyright ? 2013, ALLDATA 10.52SS Page 22
range.
> .... The controller temperature is always checked before measuring the voltage (--> DME control unit --> Actual values --> U040_Generator controller temperature).
The controller temperature must be max. 135 0C for the measurement. If this temperature is exceeded, an incorrect measured value will be determined.
> .... A measuring device, which shows the voltage value as a digital number or an analog pointer display, must be used to measure the voltage.
> .... The measuring device is connected directly to the generator (term. 30).
> .... Mechanical or electrical generator faults will be stored as fault codes in the DME control unit (fault code P1694 to P1699).
.... Fault codes for undervoltage or over voltage (P1694 or P1695) can also occur temporarily due to driving and environmental conditions.
.... Guided Fault Finding" in PIWIS Tester 9718 must be used for evaluating fault codes.
987110, 987111, 987120, 987121, 987140, 987141, 987160, 987161, 987310, 987311, 987320, 987321, 987330, 987340, 987360, 987361, 987371, 987381, 987720, 987721, 987740, 987741, 997110, 997111, 997120, 997121, 997140, 997141, 997310, 997311, 997320, 997321, 997410, 997411, 997420, 997421, 997430, 997431, 997450, 997451, 997510, 997511, 997520, 997521, 997610, 997611, 997620, 997621, 997630, 997631, 997650, 997651, 997720, 997721
Model year as of 2007 C02, C36