Boxster (986) F6-2.5L (1998)
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After the test drive, read out the fault memory with the Porsche System Tester II No. 9588 again.
DANGER:
Danger of injury through triggering of driver's airbag
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Never bang the Porsche System Tester II No. 9588 over the steering wheel.
CAUTION:
Danger of damage due to improper handling of the battery and the control unit connectors.
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Never disconnect battery with engine running.
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Never start engine without securely connected battery.
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Never pull off or push on plug connections for the control modules or other electronic components when the ignition is switched on.
General Information On The Fault Memory
Fault Code setting conditions
Fault Codes can be set in several circumstances, e.g.:
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battery disconnected
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plug connections disconnected
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power failure
In these circumstances, no fault is present in the system and the fault memory must be erased.
Fault memory Info key [F8]
In order to be able to assess the fault exactly, the fault memory Info key F8 must be pressed. This information should be saved using the Save key F4 and
printed out. If a fault code is stored with "not present" status and no other problems are present, then the fault memory must be erased.
Fault type - Frequency counter/Temperature/Voltage; Speed/Time of occurence
Supply voltage fault type
The display shows which fault type has occurred:
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Undervoltage '< 9 V'
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Overvoltage '> 16 V'
Open circuit in distribution
line
The value indicates the status of the MOST ring when the fault occurred.
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Optically faulty
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Electrically faulty
Frequency counter
When a fault first occurs, a fault entry is made in the fault memory and the counter is simultaneously set to 50.
If a fault is present, the counter is incremented by 1 for each "ignition on". The maximum count is 255.
The counter is decremented if the fault is no longer present. The fault memory is automatically erased when the counter
reaches 0.
If the error occurs again when the counter is between 1 and 49, the counter is reset to 50.
Temperature:
The value indicates the temperature (temperature sensor in the gateway) at the time the fault occurred. The temperature of
the fibre optic transmitter is monitored: max 85 degree C.
Voltage
The value indicates the voltage at the time the fault occurred.
Vehicle speed
The value indicates the vehicle speed at the time the fault occurred.
Vehicle hand-over
NOTE: The CDR23 is converted into production mode (low-current mode) in production. As known from other systems (alarm system, instrument
cluster, amplifier, roll-over bar), the CDR23 must be activated with the Porsche System Tester II No. 9588.
1. Connect and start the Porsche System Tester II No. 9588 and switch on the ignition
2. Select 'Special functions' in the Vehicle type menu and confirm with the >> key
3. Select the menu item 'Vehicle hand-over' and confirm with the >> key
4. Follow the instructions of the Porsche System Tester II No.9588
CDR23 Replacement
The CDR23 is provided in 'active production mode' as a spare part. Each time the vehicle is started, the stored PCM2 code is compared with that in the
instrument cluster. If they match the device is operational.