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Home >> Cadillac >> 1997 >> Eldorado Base >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> INSTRUMENT PANEL CLUSTER DIAGNOSTIC TROUBLE CODES (DTCs) >> DTC B1981 >> Diagnostic Procedure

Diagnostic Procedure

  1. Connect scan tool. Turn ignition off. Using scan tool, select DATA LIST and DATA. If battery voltage displayed on scan tool is 10 volts or less, go to next step. If battery voltage displayed on scan tool is not 10 volts or less, replace IPC.
  2. Measure voltage between IPC connector C1 terminal A1 (Orange wire) and ground. See Figure . If voltage is 10 volts or less, problem is in charging system. See GENERATOR & REGULATOR article in ELECTRICAL section. If voltage is greater than 10 volts, replace IPC.
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