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Home >> Oldsmobile >> 1992 >> Toronado Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - Pcm/BCM >> BCM Trouble Code Charts >> Code B410, Charging System Circuit Fault >> Or If Following Conditions Exist:

Or If Following Conditions Exist:

Code B410 will cause GENERATOR PROBLEM message to be displayed on DIC and NO CHARGE telltale to light on IPC.

NOTE: Test numbers refer to numbers on diagnostic chart.
  1. BI51 displays generator signal voltage as HI or LO, depending on voltage state at BCM. Normally, with ignition on and engine off, circuitNo. 25 voltage will be pulled low by generator and BI51 will read LO.
  2. Checks to see if low reading is due to circuit No. 25 or generator. If display reading changes from LO to HI when generator is disconnected (with engine running), BCM and circuit No. 25 are okay.
  3. Checks to see if fault is due to BCM or circuit No. 25.
  4. BD51 displays amount of generator field activity. Under normal conditions, a reading less than 7 percent would indicate a fault in field circuit or BCM.
  5. Removing generator connector will determine if fault is due to generator or an open in circuit No. 25, including BCM and interface connector.