996 Turbo diagnostic manual — Turbo applicability only / PAGE 663
Open circuit - short to ground / voltage short / version; vehicle parameters / counter · Fault counter When a fault
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911 Turbo (996) PCM2/CDR23 91
Open circuit - short to ground / voltage short / version; vehicle parameters / counter
Fault 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.
Lock status of MOST ring The value indicates the status of the MOST ring when the fault occurred.
♦lock
♦unlock
Supply voltage The value indicates the voltage at the time the fault occurred.
Supply voltage fault type The display shows which fault type has occurred:
♦no fault type
♦not present
Vehicle hand-over
The PCM2 is converted to delivery mode (low-current mode) in pro-
duction. As known from other systems (alarm system, CDR23,
instrument cluster, roll-over bar), the PCM2 must be activated with
the 9588 Porsche System Tester ll.
1. 9588 Connect and start the Porsche System Tester II and
switch on the ignition.
2. Select the menu item 'Special functions' and press the >>
key.
3. Select the menu item 'Vehicle hand-over' and press the >>
key.
4. Follow the instructions of the 9588 Porsche System Tester II.
Production mode
If the MOST control module is set to Production mode on, it is in
low-current mode. The display remains black, the control module
cannot function.
1. 9588 Connect and start the Porsche System Tester II and
switch on the ignition.
2. Select '911 Turbo (996)' in the Vehicle type menu and confirm
with the >> key.
9101 Introduction – external Harman amplifier 91-85 page 3
Printed in Germany – 43, 2003 EINVSlwl
This is a source reference. Confirm exact model applicability in the original material.
