928 S4 V8-4957cc 5.0L (1987)
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If there are only three valves listed it means there isn't a right rear valve and therefore no wire in Pin 19. If a wire exists in Pin 19 it will mean
the system has four solenoid valves.
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Not all Bosch ABS 2 have a Solenoid valve on the right rear wheel. This does not mean that if a system has only three solenoid valves that it
will only have three wheel speed sensors. These differences are sorted out in the chart.
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Not all Bosch ABS 2 have a wheel speed sensor on the right rear wheel. Systems that have only three wheel speed sensors have the rear sensor
mounted in the differential housing. The easiest way to determine how the wheel speed sensors are wired is to inspect the 35 Pin plug and see
what contacts are used for in system being tested.
