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Unless your turbo has a diagnostic box on the left front suspension tower, you will not be able to retrieve codes from the ABS computer. Earlier LH2.2 systems do not come with diagnostics.
The "suspension movement" strongly suggests that you have a wiring or relay/fuse/transient surge protector fault. See the 700/900 FAQ for details on the location of the relay and fuse. If this is not the cause, then try tracing wires to the control unit and disconnecting various wires to try to locate the issue. Start with the power supply. Then trace through the main connector to the underhood ABS unit, which may be loose or corroded.
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