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Home >> Saab >> 2001 >> 9-3 Base, 4D Hatchback, Automatic >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Bus And Diagnostics Communication >> Fault diagnosis, symptoms >> The diagnostic tool's screen does not go on when the ON button is pressed. >> Check wiring harness.

Check wiring harness.

Jiggle the wiring harness at several points and in different directions to detect intermittent breaks and short-circuits in the leads. Observe the multimeter, test lamp or diagnostic tool during the test.

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