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Home >> Volvo >> 1988 >> 780 AW71L >> Repair and Diagnosis >> Engine Performance >> Tune-Up >> Ignition System - Electronic >> Testing >> Preliminary Test Procedures
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Preliminary Test Procedures

Ignition Secondary Checks and Coil Resistance Checks are basic system tests, required whenever ignition problems are suspected. For these tests, refer to IGNITION SYSTEMS TROUBLE SHOOTING in this section. Check for hard codes which may be set in the computer. If any codes are set they must be checked and/or corrected prior to the following testing procedures.