996 Carrera Group 0 Part 1 Diagnosis / PAGE 93
Fault, DTC Possible causes, elimination, notes · Test point 12
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Fault, DTC Possible causes, elimination, notes
Test point 12
Return pump fault No feedback signal (return-pump monitoring) to the control
DTC 4266 module.
The Porsche System Tester 2 can be used to test the function of
the return pump via the Drive links menu.
To do this, call up the return pump in the Drive links menu and
activate the pump (requiredfunction: return pump runs).
The complete hydraulic unit must be replaced if the return pump
is damaged.
Important: Before replacingthe hydraulicunit, check whether:
ground is connectedto control module connector PIN 16 (from
ground point 2). The locations of the ground points are shown on
the wiring diagram Groundpoints.
plus (vehicle voltage)is connected to control module connector
PIN 17 and PIN 18.
the plug connectionon the return pump is OK.
54O_96
8
45 -D 30
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