Warning

When renewing the PDAS/ABS control unit, make sure that the PSD/ABS control unit for the 928 is not accidentally installed. For distinguishing features, see Page D39/45-20.

Fault, Fault Code Possible Causes, Elimination, Remarks

6: Front left No signal from speed sensor reaches control unit, or signal is speed sensor incorrect / unrealistic.

Warning: this fault is also indicated if the ABS/PSD control unit for the 928 is installed.

If assembly work has already taken place, check that the correct control unit has been installed. Distinguishing feature: part number.

928 control unit with PSD = 928 618

911 Carrera 4 control unit = 964 618

1. Pull of the control unit plug. Measure the internal resistance / check continuity between PIN 51 und PIN 48 on plug. Desired value 600...1600 £2.

If the desired value is not attained, check the wires and plug connections in the circuit from the front left speed sensor. Plug connections: 1 x on left spring strut, 1 x on left spring strut mount in trunk (for distinguishing feature, see Page D39/45 - 13).

If the desired value (600... 1600 £2) is not reached although the wires / plug connections are in working order, renew the speed sensor.

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

Don't pay hundreds of dollars to find out what is wrong with your car. This book is dedicated to helping the do it yourself home and independent technician understand and use OBD-II technology to diagnose and repair their own vehicles.

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