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Checking the control module

Fig 1: Identifying Ignition ON

GLL101051

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Fig 2: Connecting Control Module

GLL101005

Courtesy of VOLVO CARS OF NORTH AMERICA.

Ignition off.
Connect control module.
Ignition on.
When the ignition is switched on the control module lights the ABS warning lamp. Check that the warning lamp goes out after approximately 2 seconds.

If the warning lamp goes out, the cause of the fault has been loose connections in the control module connector. Check control module connector for Contact resistance and oxidation .

A fault has been registered if the warning lamps do not go out. Try a new control module according to Control module (ABS), replacing .

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Refer to Verification