1989 Buick ReattaFACTORY OEM SERVICE PROCEDURE

Code B332, Loss Of Compass Data: Notes

Fig 1: Code B332, Wiring Diagram Loss Of Compass Data
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Code B332 will set if communication between the compass and BCM is lost. If Code B332 is set, an "Electrical Problem" message will be displayed and the compass will display the last direction indicated until compass communication resumes.

NOTE: Test numbers refer to numbers on diagnostic chart.
  1. Checks to see if other data line components are experiencing communications problems.
  2. Checks status of data line at compass module. Normal data line voltage is between .1 and 4.5 volts.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.