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Home >> Chevrolet >> 1995 >> Lumina Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 24 (A/C-Heater System - Automatic) >> Self-Diagnostics >> Code 07, Serial Data Line Test

Code 07, Serial Data Line Test

WARNING: This page is about a different car, the 1995 Oldsmobile Cutlass Supreme. However, it is still accessible from the selected car via links, so may be relevant.

Connect Tech 1 scan tester to Data Link Connector (DLC). Turn ignition on. If communications cannot be established with PCM, see the G-TESTS W/CODES article in the ENGINE PERFORMANCE section. If communications can be established with PCM, check Tan wire at DLC terminal "M" for an open circuit or poor connection. If circuit is okay, replace A/C-heater control.

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