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Home >> Oldsmobile >> 1990 >> Toronado Base, 4T60/ME9 >> Repair and Diagnosis >> Electrical >> Charging Systems >> Alternator & Regulator >> Self-Diagnostic Tests >> Code B410 - Charging System Circuit Test >> Note On Intermittents

Note On Intermittents

If an intermittent condition exists, check B410 snap data parameters, BD61 and BI51.

  1. If BD61 is under 500 RPM and BI51 is HI, check for an intermittent open in circuit No. 25.
  2. If BD61 is under 500 RPM and BI51 is LO, check for an intermittent short to ground in circuit No. 23.
  3. If BD61 is over 500 RPM and BI51 is HI, check for an intermittent short to ground in circuit No. 23.
  4. If BD61 is over 500 RPM and BI51 is LO, check for an intermittent short to ground in circuit No. 25.
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