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996 Carrera Group 0 Part 1 Diagnosis / PAGE 278

FC I reste~~ay fault text Remedy · 4480 Booster pump

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911 Carrera (996) PSM diagnosis FC I reste~~ay fault text Remedy 4480 Booster pump 8.13 .Booster pump voltage actual value is evaluated and displays an implausible value .Short circuit to ground/voltage or open circuit in the circuit to control module terminals 2, 3, 4 Effect: .PSM function is switched off Possible cause of fault: .Booster pump motor blocked/faulty .Wiring/plug connection faulty Note: Do not jumper the pump; it must not run dry under any circumstances! Affected terminals: I12.3, 4 4607 Control module faultyI t<eplace Internal functional check hydraulic Effect:I unit PSM function is switched offI ABS function is switched off ASR function is switched off Possible cause of fault: PSM control module faulty Affected terminals: 4802 Undervoltage 18.2 .Internal functional check for control module .Voltage is less than 9.8 V (control module, rate-of-turnsensor, and steering-angle sensor power supply) .Vehicle speed is greater than 6 km/h Note: once the vehicle voltage is within the permissiblevoltage range again, the PSM system is switched back on and the indicator lights go out. Effect: .PSM function is switched oft .ABS function is switched oft .ASR function is switched oft Possible cause of fault: .Vehicle voltage was too low .Connection to the PSM control module faulty:Affected terminals: :1,5.23 45 -D 215 I

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