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Home >> Volvo >> 1992 >> 740 Turbo, AW71L >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Tests W/Codes >> Self-Diagnostics - Turbo System >> Fault Code Testing >> Code 2-4-2 (Turbo Control Valve)
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Code 2-4-2 (Turbo Control Valve)

Connect ohmmeter between turbo control unit terminals No. 1 and 23. Resistance should be 11 ohms.