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Home >> Saab >> 2003 >> 9-3 SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 25 (Bus And Diagnostics Communication) >> Fault diagnosis, fault codes >> DTC P1623: No Bus Data From TCM >> Check wiring harness.

Check wiring harness.

WARNING: This page is about a different car, the 2001 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.

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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