5000CS Turbo L5-2226cc 2.22L SOHC Turbo (MC) (1987)
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Unplug control unit connector
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Connect ohmmeter between terminal 8 of open control unit connector and terminal 2 of open OXS frequency valve connector
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Specification: approx. 10 ohm
If ohmmeter reading NOT OK
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Check for open circuit in wiring between frequency valve connector and control unit connector according to current flow diagram
If ohmmeter reading OK
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Replace control unit